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Journal of Occupational & Environmental Medicine:
doi: 10.1097/JOM.0b013e31821f2bbb
Original Articles

Effectiveness of Phone and E-Mail Lifestyle Counseling for Long Term Weight Control Among Overweight Employees

van Wier, Marieke F. MSc; Dekkers, J. Caroline PhD; Hendriksen, Ingrid J. M. PhD; Heymans, Martijn W. PhD; Ariëns, Geertje A. M. PhD; Pronk, Nico P. PhD; Smid, Tjabe PhD; van Mechelen, Willem PhD

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Abstract

Objectives: To determine the effectiveness of a weight-management program with personal counseling by phone or e-mail.

Methods: A randomized controlled trial of a 6-month program comparing two modes of intervention delivery (phone, n = 462; Internet, n = 464) with self-directed materials (control, n = 460), among overweight employees. Change in body weight after 2 years was the main outcome.

Results: Among complete cases, weight loss in the Internet group was 1.2 kg (95% confidence interval [CI], −1.9 to −0.4) and in the phone group 0.8 kg (95% CI, −1.5 to 0.03), compared with the control group. Multiple imputation of missing body weight resulted in comparative weight losses of −0.9 kg (95% CI, −2.0 to 0.3) and −0.4 kg (95% CI, −1.4 to 0.7).

Conclusions: Among complete cases, the Internet intervention showed modest long-term weight loss, but among all participants neither program version was more effective than self-help.

©2011The American College of Occupational and Environmental Medicine

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