Brain Injury Partners Web site
The BIP Web site was developed to (a) train family members in advocacy skills, particularly the core skills needed for effective communication including active listening and problem solving (eg, appropriate body language, acknowledging different perspectives); (b) help users find a broad range of services and supports (ie, through external links and a library of articles on the Web site; (c) provide strategies for reducing stress (eg, coping with grief, guilt, and burnout through healthy living and stress management and requesting help); and (d) help determine necessary supports (eg, independent living needs, transition planning). The training uses text, interactive video examples, and video-based skills exercises. Content for the Web site was developed from sources including (a) the text-based FAST (Family Advocacy Skills Training) program,32 (b) evidence-based articles written for caregivers, and (c) interviews with family members and professionals with experience in brain injury. Use of the Web site is self-directed and requires no special training.
Evaluation data were collected through Survey Console, a secure research hosting Web site. Following determination of eligibility, participants completed an online informed consent form and the pretest (T1). Participants were then randomly assigned to treatment or control groups and either (a) granted access to the program (treatment group) or (b) directed to the BIAUSA Web site (control group). Like the BIP program, the BIAUSA site contains information for caregivers about managing stress, requesting help from friends and family, and obtaining services; however, its main advocacy focus is legislative. Control participants were asked to use the Web site for a minimum of 30 minutes to match the minimum time treatment participants would view the BIP program. Treatment participants received e-mailed log-in information and a link to the program. Both groups could contact a research assistant by phone or e-mail if they had problems or questions. After 10 days, all participants received a link to complete the posttest (T2). Following T2 completion, treatment participants were encouraged to continue using the program. Both treatment and control participants completed the follow-up assessment (T3) 3 months after completing T2, and control participants were then given access to the BIP site.
Computer-based pretest, posttest, and follow-up measures were used to assess knowledge, skill application, behavioral intention, and overall life satisfaction. In addition, program use data were collected to evaluate treatment participants' exposure to the BIP materials.
In addition to providing the demographic information in Tables 1 and 2, participants answered questions about the types of services and supports they had already attempted to secure for their family member and how successful they felt. The demographics questionnaire contained 11 questions and was completed at T1.
Knowledge measures included 18 questions about the key learning objectives related to communication skills. For example, participants viewed a list of behaviors and chose those that were important for demonstrating active listening (eye contact—correct; explaining how you feel—incorrect). Participants also used a 5-point Likert scale to rate the importance of specific behaviors/strategies when interacting with care providers (eg, how important is it to explain how you feel about the situation where 1 = not at all important and 5 = very important). Scores on the knowledge measures were the percentage of correct items.
Treatment enactment33 was assessed through a series of 17 VSTs. The VST assesses subject responses to realistic situations and behaviors.34 After watching each situation, participants rated the family member's effectiveness on a 5-point Likert scale (1 = ineffective; 5 = effective). Each response was assigned a score from 1 to 5, with a higher score representing a more accurate appraisal of effectiveness. In some cases, a 1 on the Likert scale corresponded with an accurate appraisal (ie, the coding was reversed). The skill application scale showed marginal internal consistency (α = .78) and good test-retest reliability in the control condition (r = 0.78).
Following the Theory of Reasoned Action, which posits that attitudes and behavioral intentions predict behavior,35 we also assessed behavioral intention using the VSTs. Participants watched scenarios of a family member communicating with a service provider and indicated on a 5-point Likert scale how likely they were to respond that way in a similar situation (1 = not likely; 5 = likely). Again, we assigned each response a score from 1 to 5, representing intention-to-use appropriate or intention-to-not-use inappropriate responses. The behavioral intention scale showed marginal internal consistency (α = .78) and good test-retest reliability in the control condition (r = 0.76).
Satisfaction with Life Scale36
The Satisfaction with Life Scale (SLS) assesses agreement with 5 statements addressing overall satisfaction with life (eg, in most ways, my life is close to my ideal), with a 7-point Likert scale score ranging from “strongly disagree” to “strongly agree.” Participants completed the SLS at T1 and T3. The SLS showed excellent internal consistency (α = .88) and good test-retest reliability in the control condition (r = 0.68).
User satisfaction and program usability
At posttest, treatment participants completed a 12-item questionnaire on program usability (eg, appearance, navigation, level of engagement during use) and satisfaction with the program (helpfulness, level of enjoyment, likeliness to recommend the program, and overall satisfaction). Participants rated 8 program usability statements on a 5-point Likert scale (where 1 = strongly disagree and 5 = strongly agree). The 4 satisfaction questions were rated on a 7-point scale (where 1 = not at all and 7 = extremely).
With the exception of the SLS, the measures were created by the authors to evaluate changes specific to BIP program use. The participants completed the same knowledge, skill application, and behavioral intention measures at each of the 3 assessments.
Using Google Analytics, we collected information regarding each treatment participant's program use—specifically, the date and time specific pages were accessed between initial program access and T2—to calculate the number of times the site was accessed and the total time spent using the program.
Baseline equivalency, attrition, and missing data analyses
Study conditions were compared using the caregiver demographic characteristics shown in Table 1, the care receiver characteristics in Table 2, and all of the pretest outcome measures. No significant (at P < .05) differences were found with the exception of sex of the care receiver (χ2 1,200 = 4.49, P = .034). The treatment condition reported 24% female care receivers compared with 38% for the control condition. Sex of the care receiver was used as a covariate in all subsequent statistical models.
The number of assessments completed did not differ significantly by study condition (χ2 2,201 = 5.36, P = .068). Two percent of treatment participants completed only 1 assessment, 12% only 2 assessments, and 86% completed all 3 assessments compared with 3%, 3%, and 94%, respectively, for control participants. Participants who completed all 3 assessments were compared with those who did not complete them on study demographic characteristics and pretest outcome measures. No significant differences (at P < .05) were found.
One-way multivariate analysis of covariance (MANCOVA), adjusting for pretest measures, was conducted to determine the overall multivariate between-subject effect at the posttest and follow-up assessment. Univariate analysis of covariance (ANCOVA), adjusting for pretest measures, was used to evaluate between-subject effects in each of the outcome measures at posttest and follow-up. We employed an intent-to-treat analysis by using maximum likelihood estimates to impute missing data with the NORM software program,37 as it produces more accurate and efficient parameter estimates than listwise deletion or last-observation-carried-forward.38
The one-way between-subjects MANCOVA at posttest, adjusting for pretest measures, was significant (F 3,193 = 20.28, P < .001, d = 1.12) and corresponds to a large multivariate effect size. Subsequent univariate ANCOVA models (see Table 3) showed that all 3 posttest measures, controlling for pretest measures, yielded statistically significant group differences. Skill application had the largest effect size (d = 1.01 large effect), followed by intentions (d = 0.70, medium to large effect) and knowledge (d = 0.67, medium to large effect).
The same statistical methods were applied at follow-up. The one-way between-groups MANCOVA, adjusting for pretest measures, was significant (F 5,189 = 7.91, P < .001, d = 0.92) and corresponds to a large multivariate effect size. Follow-up univariate ANCOVA models (see Table 4) showed that 3 of the 4 follow-up measures, controlling for pretest measures, produced statistically significant group differences, with skill application having the largest effect size (d = 0.84, large effect), followed by intentions (d = 0.80, large effect) and knowledge (d = 0.32, small to medium effect). Satisfaction with life, assessed at follow-up but not at posttest, was not significant (P = .054 with d = 0.29, small to medium effect).
Advocacy status and knowledge
The univariate ANCOVA models described earlier were rerun to include a study condition by advocate status (based on pretest self-report on the demographic questionnaire as either “ineffective” or “effective” advocate) interaction term to test the hypothesis that the program would have greater effects for participants who indicated they were ineffective advocates compared with effective advocates. Examination of the moderator term showed a significant condition by advocate status interaction effect for the knowledge items at the posttest (F 1,195 = 9.43, P = .002) and follow-up assessments (F 1,195 = 6.21, P = .014). No significant condition by advocate status interactions were found for the other study outcomes at posttest or follow-up. To elucidate the significant interaction terms, separate ANCOVA models were run for effective and ineffective advocates. Results at posttest showed a significant between-subjects condition effect on knowledge for both effective (F 1,145 = 6.98, P = .009, d = 0.44) and ineffective (F 1,54 = 27.11, P < .001, d = 1.48) advocates. Results at follow-up showed a nonsignificant between-subjects condition effect for effective advocates (F 1,145 = 0.71, P = .402, d = 0.14) and a significant effect for ineffective advocates (F 1,54 = 12.60, P = .001, d = 0.99). The between-subjects condition effect on pretest-adjusted knowledge for ineffective advocates was approximately 3 times greater than the condition effect on pretest-adjusted knowledge for effective advocates at posttest and approximately 7 times greater at follow-up.
Education level and behavioral intentions
Univariate ANCOVA models tested whether level of education (0 = no college degree, 1 = college degree) moderated the condition effects reported in Tables 3 and 4. Examination of the moderator term showed a significant interaction effect on pretest-adjusted intentions at the posttest (F 1,200 = 5.25, P = .023) and follow-up (F 1,200 = 4.35, P = .038) assessments. No significant condition by education level interactions were found for the other study outcomes at posttest or follow-up. Separate ANCOVA models for participants with and without a college degree at posttest revealed a significant between-subjects condition effect on intentions for participants without a college degree (F 1,111 = 26.81, P < .001, d = 1.00), but no significant condition effect on intentions for participants with a college degree (F 1,88 = 1.91, P = .171, d = 0.30). Results at follow-up showed a significant between-subjects condition effect on intentions for participants without a college degree (F 1,111 = 24.79, P < .001, d = 0.99) and with a college degree (F 1,88 = 5.25, P = .024, d = 0.50). The differential effect on intentions for participants without a college degree was approximately 3.5 times greater than for participants with a college degree at posttest and approximately 2 times greater at follow-up.
Program usage and dose-response analysis
Most treatment participants (51%) made 1 visit to the program Web site, 24% made 2 visits, 18% made 3 or more visits, and 7% did not visit the Web site at all. The average amount of time spent on the Web site across all visits was 57 minutes (SD = 47 minutes), with a median of 45 minutes. Program use data were not available for the BIAUSA Web site.
To assess whether more time on the site resulted in greater improvement in the study outcome measures, we computed change scores for treatment participants (posttest minus pretest and follow-up minus pretest) and correlated both with time spent on the program Web site. A significant correlation (r = 0.24, P = .016) was found with the knowledge item posttest change score. The observed correlation corresponds to a small effect size. No other significant correlations were detected.
User satisfaction and program usability
User satisfaction and program usability items indicated a favorable perception of the program. An overall satisfaction score computed across the 4 items yielded a mean score of 5.14 (SD = 1.46), indicating that treatment participants were quite satisfied with the program. Users were also asked to agree or disagree with program usability statements on a 5-point scale. An overall program usability score computed across the 8 items produced a mean score of 4.21 (SD = 0.53), indicating that the treatment participants found the program quite usable.
This study evaluated the efficacy of the BIP program in training family members in the key components associated with effective advocacy. The results demonstrated significant improvement at both posttest and follow-up in participants' knowledge of the key program components (ie, active listening and problem-solving skills), their application in video-based situations, and their intention to use those skills compared with the control group. Likewise, participants who used the program demonstrated greater increases in intention-to-use advocacy skills. These results, related to our first 3 research questions, were evident at posttest and follow-up. Our fourth research question, related to overall life satisfaction, was measured only at pretest and at follow-up. This comparison did not reach statistical significance. It is unsurprising that such a brief intervention would not affect this broad measure. The treatment group indicated satisfaction with the program and its content.
We also examined the effects of several participant variables on outcomes to determine who benefited most from the program. First, treatment participants who rated themselves as ineffective advocates at pretest demonstrated greater gains in knowledge than participants who rated themselves as effective advocates. This finding was only present for the knowledge measures. However, it suggests that it may be beneficial to include more advanced materials to address the needs of individuals with more advanced skill bases. Second, the program had greater intention effects among users with no college degree than among users with a college degree This finding was true only for intention. It is possible that individuals with less education were somewhat more motivated to learn and apply the skills because they had less exposure to this type of information/training than those with college experience. Third, time spent viewing the program correlated somewhat with improvement on knowledge items at posttest, but this dose-response effect was no longer present at 3-month follow-up. This finding suggests that booster sessions could be a beneficial approach to enhancing longer-term effects.
The primary limitations of this study are the participant sample and aspects of the measurement process. Although the sample was taken from a broad geographic region, represented rural and urban communities, and was reasonably distributed across socioeconomic levels, study participants were not ethnically or racially diverse. Future recruitment could expand specifically to include individuals from underrepresented groups. In addition, potential users without a high-speed Internet connection were excluded. Excessive cost or lack of availability in a geographic area are cited as primary reasons that home dial-up users do not have high-speed Internet connections,39 so our recruitment efforts may have limited socioeconomic and geographic representation.
Perhaps, the most significant limitation is inherent in computer-based assessment. Although measures of knowledge and skill application assessed participants' ability to discriminate between effective and ineffective family advocacy, the research design did not include a measure of participants' actual application of skills in their daily lives. Future evaluation efforts could include an observational measure to provide objective evaluation of skill use and related outcomes. Furthermore, the treatment group had access to the BIP program throughout the study period, with the potential to access the Web site while completing the measures. Although the skill application measures used VSTs with novel scenarios, access to the Web site could limit the validity of results on the knowledge measures. Also, the measures were curriculum based–aligned with content from the program not found in the control Web site and expected to produce proximal outcomes.40 The control condition should be considered a nontreatment control, as it did not provide the same information or training in key advocacy skills as did the BIP program, nor did it offer guidance through the site. The results would be strengthened through comparison of the BIP program to an analogous training program had one been available. Another study limitation involves our inability to examine dose response as a factor in analyses. Future studies should use a control condition that allows comparison of relative treatment dosage to determine whether that is a mitigating factor in outcomes. Finally, the measure of the more global construct of life satisfaction may have been too broad to be significantly altered by a short-term skills-based training. In a future study, it would be beneficial to include measures of psychosocial impact that can be expected to change to a greater degree following a short-term intervention.
This study demonstrated the effectiveness of a Web-based intervention in teaching effective skills to caregivers advocating for a family member with brain injury. The results replicate findings from our previous study.30 In both studies, caregivers demonstrated significant increases in knowledge, skill application, and intention to use the skills learned in their advocacy training program. In both cases, participants used a self-directed intervention that did not require special training, and program benefits were gained without professional assistance, demonstrating the utility of Web-based interventions. The acquired skills could result in improved family functioning and better outcomes for survivors of brain injury through greater access to services and reduced caregiver burden. The BIP program is a first step in educating and developing skills among family members who need to be effective advocates.
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Keywords:© 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins
adults; advocacy; caregiver; interactive; online; randomized trial; training; traumatic brain injury; Web-based