Secondary Logo

Journal Logo

Adherence to Pulmonary Rehabilitation in COPD

A QUALITATIVE EXPLORATION OF PATIENT PERSPECTIVES ON BARRIERS AND FACILITATORS

Oates, Gabriela R. PhD; Niranjan, Soumya J. PhD, BPharm; Ott, Corilyn PhD; Scarinci, Isabel C. PhD, MPH; Schumann, Christopher MS; Parekh, Trisha DO; Dransfield, Mark T. MD

Journal of Cardiopulmonary Rehabilitation and Prevention: September 2019 - Volume 39 - Issue 5 - p 344–349
doi: 10.1097/HCR.0000000000000436
Pulmonary Rehabilitation
Free

Purpose: Adherence to pulmonary rehabilitation (PR) is low. This qualitative study used the PRECEDE model to identify predisposing (intrapersonal), reinforcing (interpersonal), and enabling (structural) factors acting as barriers or facilitators of adherence to PR, and elicit recommendations for solutions from patients with chronic obstructive pulmonary disease (COPD).

Methods: Focus groups with COPD patients who had attended PR in the past year were conducted. Sessions were recorded, transcribed verbatim, and coded independently by 2 coders, who then jointly decided on the final coding scheme. Data were summarized across groups, and analysis was used a thematic approach with constant comparative method to generate categories.

Results: Five focus groups with 24 participants each were conducted. Participants (mean age 62 yr) were 54% male, and 67% black. More than half had annual income less than $20 000, 17% were current smokers, and 54% had low adherence (less than 35% of prescribed PR sessions). The most prominent barriers included physical ailments and lack of motivation (intrapersonal), no support system (interpersonal), transportation difficulties, and financial burden (structural). The most prominent facilitators included health improvement, personal determination (intrapersonal), support from peers, family, and friends (interpersonal), and program features such as friendly staff and educational component of sessions (structural). Proposed solutions included incentives to maintain motivation, tobacco cessation support (intrapersonal), educating the entire family (interpersonal), transportation assistance, flexible program scheduling, and financial assistance (structural).

Conclusion: Health limitations, social support, transportation and financial difficulties, and program features impact ability of patients to attend PR. Interventions addressing these interpersonal, intrapersonal, and structural barriers are needed to facilitate adherence to PR.

This qualitative study identified barriers and facilitators to pulmonary rehabilitation from the perspective of COPD patients. Health limitations, social support, transportation, financial difficulties, and program features impact ability of patients to attend sessions. Solutions included motivational incentives, tobacco cessation support, educating the entire family, transportation services, flexible scheduling, and financial assistance.

Pediatric Pulmonary and Sleep Medicine (Dr Oates), Health Services Administration (Dr Niranjan), Preventive Medicine (Dr Scarinci), Cardiopulmonary Rehabilitation (Mr Schumann), and Lung Health Center and Pulmonary, Allergy and Critical Care Medicine (Drs Parekh and Dransfield), University of Alabama at Birmingham; and Birmingham Veterans Affairs Medical Center, Birmingham, Alabama (Drs Ott and Dransfield).

Correspondence: Gabriela R. Oates, PhD, 1600 7th Ave South, ACC 620, Birmingham, AL 35233 (goates@uab.edu).

The authors declare no conflicts of interest.

Pulmonary rehabilitation (PR), recommended in international guidelines for management of chronic obstructive pulmonary disease (COPD),1 has been associated with improvements in quality of life, dyspnea, and exercise tolerance and a decrease in exacerbations and hospitalizations.2–5 Despite demonstrated benefits, uptake of PR is low.6–8 Research has focused on clinical (oxygen use, shuttle walking distance, lung function, exacerbations, hospitalizations, depression) and demographic (sex, smoking status, marital status) predictors of PR completion.6,9,10 Socioeconomic disadvantage has also been identified as a correlate of adherence.11 Expanding on the results of a quantitative study of adherence to PR,12 this qualitative research explored barriers and facilitators of adherence to PR using focus groups with COPD patients to identify potential adherence-promoting strategies.

Back to Top | Article Outline

METHODS

THEORETICAL FRAMEWORK

Barriers and facilitators to PR exist on multiple levels, including individual, interpersonal, and health system.13 Therefore our analysis was guided by the PRECEDE model,14 which identifies predisposing (intrapersonal), reinforcing (interpersonal), and enabling (structural) factors relevant to health behaviors and programs. Predisposing factors involve the knowledge, beliefs, and values affecting decision making. Reinforcing factors include the influence of family, friends, and others. Enabling factors include the socioeconomic, organizational, and policy factors influencing a health behavior. The PRECEDE model has been used successfully in interventions for HPV vaccination uptake,15 asthma self-management,16 and diabetes self-care,17 among others.

Back to Top | Article Outline

STUDY DESIGN

This study constituted the qualitative phase of a mixed-methods investigation with sequential explanatory design,18,19 whereby the collection and analysis of qualitative data followed the collection and analysis of quantitative data to increase the interpretability of results.20 The quantitative phase reported associations between social determinants and adherence to PR. Relative to high adherence (>85% of prescribed PR), moderate adherence (35%-85% of prescribed PR) was associated with neighborhood-level socioeconomic disadvantage, including poverty, public assistance, households without vehicles, cost burden, unemployment, and minority population, while low adherence (<35% of prescribed PR) was associated with current smoking and poor functional health.12 The qualitative phase explored these associations in depth. Interview questions were guided by the PRECEDE model, asking about the role of intrapersonal factors (knowledge, beliefs, health status), interpersonal factors (family, friends), and enabling factors (financial considerations, transportation, and program features) for completion of PR.

Back to Top | Article Outline

DATA COLLECTION

The study population consisted of COPD patients who had attended PR in the previous 12 mo (n = 174). After excluding deceased and out-of-state patients, the final sample included 166 individuals. An adherence score was assigned to each individual based on the proportion of completed-to-prescribed PR sessions as described in the quantitative phase12: high (>85% of prescribed), moderate (35%-85% of prescribed), and low (<35% of prescribed). We aimed to conduct 5 focus groups with diverse representation of adherence levels. Therefore, we divided the sample (n = 166) into 5 source groups (n = 33 each with one n = 34) using the following scheme: from the low-adherence pool, every fifth individual was assigned to a source group, starting with group 1, until all were assigned; from the moderate-adherence pool, every fourth individual was similarly assigned; and from the high-adherence pool, every third individual was similarly assigned. A focus group was then recruited from within its respective source group. Contact was attempted with all 166 individuals. Focus group participants signed an informed consent and received a $50 gift card. A semistructured guide (Table 1) was used to prompt participants about challenges to attending PR, facilitators of completing PR, and strategies to help patients attend PR. Focus group sessions were audio-recorded, transcribed verbatim, and de-identified for analysis. The verbatim transcription preserved false starts, filler words, repetitive phrasing, slang, and original grammar. The study was approved by the institutional review board of the University of Alabama at Birmingham (Protocol X160907008).

Table 1

Table 1

Back to Top | Article Outline

DATA ANALYSIS

Data analysis used a thematic approach.21 A constant comparative method22,23 was employed to generate categories, patterns, and themes. Transcriptions were coded independently by 2 team members, and then codes were discussed by the team; the final coding scheme was decided jointly. Discussions contributed to the iterative data analysis and acted as respondent validation,24 helping achieve trustworthiness through investigator triangulation.25 Interrater agreement was assessed with the Cohen kappa (κ) with κ ≥ 0.81 considered to be near perfect agreement.26 Analyses were conducted with NVivo 11 (QSR International).

Back to Top | Article Outline

RESULTS

The Figure presents a STROBE (STrengthening the Reporting of OBservational studies in Epidemiology) diagram of study participants. A total of 24 individuals participated in 5 focus groups (n = 6, 5, 4, 4, and 5 persons/group, respectively). The characteristics of participants are presented in Table 2. Most participants were black, with high school education or less, household income < $20 000, and low PR adherence (<35% of prescribed PR). Focus group discussions identified barriers and facilitators to PR and recommended solutions. The themes from high-frequency codes are presented in Table 3.

Figure

Figure

Table 2

Table 2

Table 3

Table 3

Back to Top | Article Outline

BARRIERS TO ADHERENCE

Predisposing (Intrapersonal) Barriers

The most frequent barrier was health limitations. Participants indicated that pain, lack of mobility, and physical ailments make it very difficult to attend PR sessions.

I have arthritis, gout, and all combined in one. [...]

I really don't like getting on the Interstate, because my—I never know when my bronchitis will act up and my sugar most definitely acts up.

Disease complications were also a prominent theme when discussing barriers to PR.

I didn't complete. [...] And the first time that I was in it, I had pneumonia. And I really have—I have pneumonia a lot [...]

In addition to physical limitations, participants spoke of lack of motivation as a significant barrier to attending sessions:

Like me for instance, you know the devil get in me some days, you know, some days I just don't wanna get up. Especially on Mondays.

Back to Top | Article Outline

Reinforcing (Interpersonal) Barriers

Participants described how lack of social and emotional support interferes with session completion.

I really miss my wife cuz she attended all the sessions. [...] You gotta have one that will be there for you.

Back to Top | Article Outline

Enabling (Structural) Barriers

Most participants discussed transportation as a major barrier to attending PR. This theme included topics such as not having a car and having to rely on buses to get to sessions.

A lotta people have problems with transportation. I'm havin' it now. Because I ride the VIP bus and you can tell them I hafta be there at 9:15, and they don't be on time. Sometime(s) they don't get me to 10:30.

The next most discussed barrier was financial struggles, including copays, costs not covered by health insurance, or lack of health insurance. Respondents described cost burden as a major hindrance to PR.

You know, you have to come out your pocket for the copayments and all this. Sometimes I have prescriptions that run like $100, $150, you know. That's every month. [...] I have to see 3 or 4 doctors a month, you know. Sometimes, just $500 or $600 a month be just out of my pocket.

Back to Top | Article Outline

FACILITATORS OF ADHERENCE

Participants were asked what helped their efforts to complete PR sessions. Again, predisposing (intrapersonal), reinforcing (interpersonal), and enabling (structural) stimuli were identified.

Back to Top | Article Outline

Predisposing (Intrapersonal) Facilitators

Seeing their health improve was the most important facilitator of adherence to PR. Participants felt motivated to complete their sessions when they saw that they could breathe better, walk more, or lost weight. Most everyone discussed the encouragement they felt when their symptoms improved, and these experiences served as powerful facilitators of treatment completion.

Improving on my numbers. I hated the treadmill. But I'm up to a mile, and one-third of it without any oxygen. [...] I'm looking at 40-something pounds that I've lost.

Personal determination was discussed as an internal facilitator of adherence. Participants stated that when an individual had the will to complete their sessions they did not allow any barriers to interfere.

Well, it's just a mind game. If you feel like you need to do this, you'll go and do it. But if you say I ain't gonna do it, it ain't gonna bother me none, you know, then you're the one that's losin'. [...]

Although determination was viewed mostly as an intrinsic quality of the individual (“It's in the person”), some participants recognized that it can be externally motivated, for example by the desire to achieve a goal, such as the ability to spend time with one's grandchildren or travel.

For me it was the determination [...] my dream is to be able to travel still. And it was frustrating sometimes but I was just determined.

Back to Top | Article Outline

Reinforcing (Interpersonal) Facilitators

Participants underscored the importance of social support and emotional encouragement, and how it motivated them to remain in the program. The fellowship of and accountability to peers in the program were key to completing treatment.

Actually, there's some camaraderie there. [...] I see what you're doing today, and I look forward to being able to do that maybe. Or I see the struggles that maybe he has today, and I hope that I can encourage a little.

Similarly, participants recounted the critical role their family and friends played in their treatment.

My wife helps me a lot.

Family helps [...] they keep reminding you to do it.

All my coworkers... All very supportive. Still watch after me.

Back to Top | Article Outline

Enabling (Structural) Facilitators

Participants identified program staff as a positive driving force for attending sessions. The words “friendly,” “nice,” “encouraging,” and “smiling faces” were used to describe them. Participants were unanimous about the role of PR staff as a facilitator of adherence.

[...] they friendly, they nice.

Another facilitator was the educational component of sessions. Participants discussed at length the role of learning and reiterating basic information about their disease for completing the sessions.

I learned how to take my pressure and my oxygen level and learned how to breathe. I didn't know none of that and been goin' in and outta the hospital all my life. But they taught me that.

Back to Top | Article Outline

PROPOSED SOLUTIONS

Participants were asked what is most important in designing a program to help COPD patients complete PR. Insight into several areas was provided, with recommendations addressing predisposing (intrapersonal), reinforcing (interpersonal), and enabling (structural) factors.

Back to Top | Article Outline

Predisposing (Intrapersonal) Solutions

Participants stressed that PR sessions should be kept appealing by including group exercises, goal setting, and continued encouragement from staff. Two types of motivational incentives were suggested: (1) gift items such as food, medical samples, and free PR sessions or time with trainer and (2) intangible incentives such as acknowledgment of progress or sharing accomplishments with peers and family. They also proposed the use of counseling, both during and after completion of the program.

Maybe if you had a counselor around to help motivate ‘em cuz you'd be able to tell the ones that not motivated when they first come in the door.

Second, participants recommended the inclusion of cost-free tobacco cessation services:

But if they had more smoking cessation programs that insurances will cover.

Finally, participants proposed expanding the educational component of PR programs because learning about their disease helped them understand their symptoms and make decisions about care:

We could learn more about what COPD is [...] and it can help you and affect you in your everyday life activities.

I think, explain why you take certain medications. [...] I keep doing this every day and I don't feel any different. You're gonna save some money so you don't get this prescription refilled. Then someone says, why aren't you taking it? [...]

Back to Top | Article Outline

Reinforcing (Interpersonal) Solutions

Participants expressed a desire to see their entire family included in PR sessions and educated about COPD.

Sometimes I wish though that they have some requirements for the program where my children who are in their 30s to sit in a session and maybe get a better understanding cuz I don't sometimes think well they fully understand what I'm going through.

Back to Top | Article Outline

Enabling (Structural) Solutions

Transportation services, flexible scheduling, and financial assistance were the main recommendations for structural solutions. In terms of transportation, suggestions included carpool, door-to-door escort service, and bus vouchers, among others:

You know, you set your time up for your sessions to be as a group and you just come, you know, carpool together.

So, it wouldn't be no problem if you maybe had somebody with a van [...] that could go to her house [...] and bring ‘em and take ‘em there.

Maybe by some of these transportation buses that pick you up and take you to the doctor and pick you up and take you to your rehab visits. You have a voucher for the bus and something like that.

Participants also stated that PR programs should consider flexible scheduling or offer sessions in multiple locations. Expanded hours of operation and additional locations would also help alleviate transportation difficulties.

Include scheduling that would accommodate everybody [...] because everybody is on a different time.

If they schedule them in the evening time, I have no problem getting to them. Morning appointments, I have a problem getting to them.

Participants further recommended financial assistance for patients who cannot afford PR.

Work on establishing a fund to help people to remain in this program if it wasn't covered by insurance. [...] And if there were some funds available to cover cases where someone's insurance wouldn't cover.

Back to Top | Article Outline

DISCUSSION

Guided by the PRECEDE model, this qualitative study used focus groups with COPD patients to identify barriers and facilitators to completion of PR. Study results showed that health limitations, social support, transportation, financial difficulties, and program features impact the willingness and ability of patients to attend PR. Our data also outline patient-proposed solutions to improve adherence to PR.

PR is a demanding task for COPD patients, who experience shortness of breath, limited mobility, and multiple comorbidities.27 Our results corroborate previous findings that poor functional health is a risk factor for nonadherence.28 They also suggest that personal determination is key for completing sessions. Although resolve has been identified as a predictor of adherence to PR, it has been discussed in the context of readiness as defined by the Transtheoretical Model.29 In our study, participants viewed determination as a personal disposition indicative of empowerment.30,31 The commonality of statements such as “It's got to be within the individual that's willing to complete that program” and “You just have to have the will power to wanna do it,” coupled with the lack of references to powerful others, chance, or God, indicates a strong internal locus of control regarding PR.32 Nevertheless, more than half of participants had low adherence, suggesting that internal locus of control may be moderated by other factors, such as self-efficacy.33

Our data highlight the important role of health education for adherence to PR. Patient education is central to most PR programs and has been associated with improvement in dyspnea34 as well as self-efficacy and self-management skills.35 Our participants, while corroborating previous evidence, felt that education should be provided not only to the patient but also to his or her family to promote the understanding of the disease and facilitate emotional and social support. Family involvement is a gold standard for effective treatments and interventions in tobacco cessation,36 substance use,37 and obesity.38,39 Harnessing the influence of family members through an enhanced understanding of the benefits of PR and a broader understanding of the COPD disease can be a fruitful approach in PR programs.

Living alone or not having a support system, which has been found impactful for participation in PR,29 was identified as a major barrier. Conversely, the fellowship of PR peers and staff served as a motivating factor and alleviated the social isolation commonly seen in COPD patients.40 Although home-based PR, or tele-rehabilitation, can reduce barriers related to access,41–43 it may not adequately address social isolation or may even exacerbate it. Future studies of home-based PR need to consider this potentially limiting aspect of tele-rehabilitation. Psychological well-being is an important correlate of quality of life and health outcomes in COPD44,45; therefore, it should be part of the long-term evaluation of distance-based programs.

The format and schedule of support groups need to be carefully considered. For example, the clinical program from which study participants were recruited offers a monthly support group, but attendance is low. On the other hand, educational sessions have assumed some functions of support groups by connecting participants and giving them an opportunity to share experiences, while learning about lung disease, respiratory devices, nutrition, or yoga. For the success of support groups, a prior assessment of needs and preferences may be necessary. Finally, in our clinical program, the introduction of a COPD order set for automatic PR referral at hospital discharge has increased the number of referred and enrolled patients, but has decreased adherence to PR, as a larger proportion of participants are smokers, have multiple comorbidities, and diagnosed depression.12 Referral, while essential for access, needs to go hand-in-hand with programs that address barriers to PR completion.

Along with intra- and interpersonal factors, structural barriers such as transportation difficulties and financial burden were discussed. Participants deliberated on the challenges of getting to appointments and the prohibitive out-of-pocket costs that discourage participation. Transportation challenges46 and high Medicare copays for PR47 have been reported previously. Our results underscore the importance of socioeconomic factors for completion of PR.12

The study has several limitations. Although participants were sociodemographically diverse and included all levels of adherence, data may not be applicable to patients in other programs or geographic areas. As the interviews were retrospective, it may have been difficult for some to recall their experiences. Additionally, we did not interview caregivers or providers. While providers' perspectives in PR have been studied,29 caregivers' perspectives have not been explored, to the best of our knowledge. Hence, caregiver studies may be beneficial, particularly for addressing intra- and interpersonal barriers. The impact of out-of-pocket expenses also remains an understudied factor in uptake and completion of PR.

We previously reported that, relative to high adherence, low adherence is associated with markers of limited functional capacity and current smoking, while moderate adherence is associated with socioeconomic disadvantage.12 This study expands the understanding of factors that promote or inhibit adherence to PR. Together these 2 investigations highlight the synergistic role of health and socioeconomic status as independent predictors of suboptimal adherence to PR and point to the need for targeted approaches to optimize access to PR for all patients with COPD.

Back to Top | Article Outline

CONCLUSION

Both health limitations and socioeconomic disadvantage impact the ability of patients to attend PR. Interventions tailored to the needs of patient subgroups should be tested. PR programs should be flexible, accessible, and family-centered and should promote patient engagement.

Back to Top | Article Outline

ACKNOWLEDGMENT

This project was supported by grant number K12HS023009 from the Agency for Healthcare Research and Quality.

Back to Top | Article Outline

REFERENCES

1. Rabe KF. Global initiative for chronic obstructive lung disease. Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease. GOLD executive summary. Am J Respir Crit Care Med. 2007;176:532–555.
2. McCarthy B, Casey D, Devane D, Murphy K, Murphy E, Lacasse Y. Pulmonary rehabilitation for chronic obstructive pulmonary disease. Cochrane Database Syst Rev. 2015;2:CD003793.
3. Puhan M, Scharplatz M, Troosters T, Walters EH, Steurer J. Pulmonary rehabilitation following exacerbations of chronic obstructive pulmonary disease. Cochrane Database Syst Rev. 2009;(1):CD005305.
4. Spruit MA, Singh SJ, Garvey C, et al An official American Thoracic Society/European Respiratory Society statement: key concepts and advances in pulmonary rehabilitation. Am J Respir Crit Care Med. 2013;188(8):e13–e64.
5. Schroff P, Hitchcock J, Schumann C, Wells JM, Dransfield MT, Bhatt SP. Pulmonary rehabilitation improves outcomes in chronic obstructive pulmonary disease independent of disease burden. Ann Am Thorac Soc. 2017;14(1):26–32.
6. Hayton C, Clark A, Olive S, et al Barriers to pulmonary rehabilitation: characteristics that predict patient attendance and adherence. Respir Med. 2013;107(3):401–407.
7. Boutou AK, Tanner RJ, Lord VM, et al An evaluation of factors associated with completion and benefit from pulmonary rehabilitation in COPD. BMJ Open Respir Res. 2014;1(1):e000051.
8. Hogg L, Garrod R, Thornton H, McDonnell L, Bellas H, White P. Effectiveness, attendance, and completion of an integrated, system-wide pulmonary rehabilitation service for COPD: prospective observational study. COPD. 2012;9(5):546–554.
9. Heerema-Poelman A, Stuive I, Wempe JB. Adherence to a maintenance exercise program 1 year after pulmonary rehabilitation: what are the predictors of dropout? J Cardiopulm Rehabil Prev. 2013;33(6):419–426.
10. Brown AT, Hitchcock J, Schumann C, Wells JM, Dransfield MT, Bhatt SP. Determinants of successful completion of pulmonary rehabilitation in COPD. Int J Chron Obstruct Pulmon Dis. 2016;11:391–397.
11. Steiner MC, Lowe D, Beckford K, et al Socioeconomic deprivation and the outcome of pulmonary rehabilitation in England and Wales. Thorax. 2017;72(6):530–537.
12. Oates GR, Hamby BW, Stepanikova I, et al Social determinants of adherence to pulmonary rehabilitation for chronic obstructive pulmonary disease. COPD. 2017;14(16):610–617.
13. Cox NS, Oliveira CC, Lahham A, Holland AE. Pulmonary rehabilitation referral and participation are commonly influenced by environment, knowledge, and beliefs about consequences: a systematic review using the Theoretical Domains Framework. J Physiother. 2017;63(2):84–93.
14. Green L, Kreuter M. Health Program Planning: An Educational and Ecological Approach. 4th ed. New York, NY: McGraw Hill; 2005.
15. Dilley SE, Peral S, Straughn JM Jr, Scarinci IC. The challenge of HPV vaccination uptake and opportunities for solutions: lessons learned from Alabama. Prev Med. 2018;113:124–131.
16. Bailey WC, Richards JM Jr, Manzella BA, Windsor RA, Brooks CM, Soong SJ. Promoting self-management in adults with asthma: an overview of the UAB program. Health Educ Q. 1987;14(3):345–355.
17. Dizaji MB, Taghdisi MH, Solhi M, et al Effects of educational intervention based on PRECEDE model on self care behaviors and control in patients with type 2 diabetes in 2012. J Diabetes Metab Disord. 2014;13:72.
18. Creswell JW, Plano Clark VL, Gutmann M, Hanson W. Advanced mixed methods research designs. In: Tashakkori A, Teddlie C, eds. Handbook of Mixed Methods in Social and Behavioral Research. Thousand Oaks, CA: Sage; 2003:209–240.
19. Tashakkori A, Teddlie C. Foundations of Mixed Methods Research: Integrating Quantitative and Qualitative Approaches in the Social and Behavioral Sciences. Thousand Oaks, CA: Sage; 2009.
20. Greene JC, Caracelli VJ, Graham WF. Toward a conceptual framework for mixed-method evaluation designs. Educ Eval Policy Anal. 1989;11(3):255–274.
21. Vaismoradi M, Turunen H, Bondas T. Content analysis and thematic analysis: implications for conducting a qualitative descriptive study. Nurs Health Sci. 2013;15(3):398–405.
22. Strauss A, Corbin J. Grounded theory methodology: an overview. In: Denzin NK, Lincoln YS, eds. Handbook of Qualitative Research. Thousand Oaks, CA: Sage; 1994:273–285.
23. Strauss A, Corbin J. Basics of Qualitative Research. Procedures and Techniques for Developing Grounded Theory. 2nd ed. Thousand Oaks, CA: Sage; 1998.
24. Bloor M. Techniques of validation in qualitative research: a critical commentary. In: Miller G, Dingwall R, eds. Context and Method in Qualitative Research. Thousand Oaks, CA: Sage; 1997:37–50.
25. Shenton AK. Strategies for ensuring trustworthiness in qualitative research projects. Educ Inf. 2004;22(2):63–75.
26. Viera AJ, Garrett JM. Understanding interobserver agreement: the kappa statistic. Fam Med. 2005;37(5):360–363.
27. Noteboom B, Jenkins S, Maiorana A, Cecins N, Ng C, Hill K. Comorbidities and medication burden in patients with chronic obstructive pulmonary disease attending pulmonary rehabilitation. J Cardiopulm Rehabil Prev. 2014;34(1):75–79.
28. Selzler AM, Simmonds L, Rodgers WM, Wong EY, Stickland MK. Pulmonary rehabilitation in chronic obstructive pulmonary disease: predictors of program completion and success. COPD. 2012;9(5):538–545.
29. Guo S-E, Bruce A. Improving understanding of and adherence to pulmonary rehabilitation in patients with COPD: a qualitative inquiry of patient and health professional perspectives. PLoS One. 2014;9(10):e110835.
30. Rissel C, Perry C, Finnegan J. Toward the assessment of psychological empowerment in health promotion: initial tests of validity and reliability. J R Soc Health. 1996;116(4):211–218.
31. Nafradi L, Nakamoto K, Schulz PJ. Is patient empowerment the key to promote adherence? A systematic review of the relationship between self-efficacy, health locus of control and medication adherence. PLoS One. 2017;12(10):e0186458.
32. Rotter JB. Generalized expectancies for internal versus external control of reinforcement. Psychol Monogr. 1966;80(1):1–28.
33. Wallston KA. The validity of the multidimensional health locus of control scales. J Health Psychol. 2005;10(5):623–631.
34. Ries AL, Bauldoff GS, Carlin BW, et al Pulmonary rehabilitation: joint ACCP/AACVPR evidence-based clinical practice guidelines. Chest. 2007;131(5):4S–42S.
35. Cosgrove D, Macmahon J, Bourbeau J, Bradley JM, O'Neill B. Facilitating education in pulmonary rehabilitation using the living well with COPD programme for pulmonary rehabilitation: a process evaluation. BMC Pulm Med. 2013;13:50.
36. Hubbard G, Gorely T, Ozakinci G, Polson R, Forbat L. A systematic review and narrative summary of family-based smoking cessation interventions to help adults quit smoking. BMC Fam Pract. 2016;17:73.
37. Van Ryzin MJ, Roseth CJ, Fosco GM, Lee YK, Chen IC. A component-centered meta-analysis of family-based prevention programs for adolescent substance use. Clin Psychol Rev. 2016;45:72–80.
38. Berge JM, Everts JC. Family-based interventions targeting childhood obesity: a meta-analysis. Child Obes. 2011;7(2):110–121.
39. Skelton JA, Buehler C, Irby MB, Grzywacz JG. Where are family theories in family-based obesity treatment?: conceptualizing the study of families in pediatric weight management. Int J Obes (Lond). 2012;36(7):891–900.
40. Anzueto A. Impact of exacerbations on COPD. Eur Respir Rev. 2010;19(116):113–118.
41. Benzo RP, Kramer KM, Hoult JP, Anderson PM, Begue IM, Seifert SJ. Development and feasibility of a home pulmonary rehabilitation program with health coaching. Respir Care. 2018;63(2):131–140.
42. Bernocchi P, Vitacca M, La Rovere MT, et al Home-based telerehabilitation in older patients with chronic obstructive pulmonary disease and heart failure: a randomised controlled trial. Age Ageing. 2018;47(1):82–88.
43. Selzler AM, Wald J, Sedeno M, et al Telehealth pulmonary rehabilitation: a review of the literature and an example of a nationwide initiative to improve the accessibility of pulmonary rehabilitation. Chron Respir Dis. 2018;15(1):41–47.
44. Garrod R, Marshall J, Barley E, Jones P. Predictors of success and failure in pulmonary rehabilitation. Eur Respir J. 2006;27(4):788–794.
45. Putman-Casdorph H, McCrone S. Chronic obstructive pulmonary disease, anxiety, and depression: state of the science. Heart Lung. 2009;38(1):34–47.
46. Keating A, Lee AL, Holland AE. Lack of perceived benefit and inadequate transport influence uptake and completion of pulmonary rehabilitation in people with chronic obstructive pulmonary disease: a qualitative study. J Physiother. 2011;57(3):183–190.
47. Rajagopal A, Casaburi R. Pulmonary rehabilitation: improvement with movement. COPD. 2016;3(1):479.
Keywords:

adherence; COPD; patient perspectives; pulmonary rehabilitation; qualitative research

Copyright © 2019 Wolters Kluwer Health, Inc. All rights reserved.