Web-based weight management programs in an integrated health care setting: a randomized, controlled trial.

Objective: To assess the efficacy of a Web-based tailored behavioral weight management program compared with Web-based information-only weight management materials.

Research Methods And Procedures: Participants, 2862 eligible overweight and obese (BMI = 27 to 40 kg/m2) members from four regions of Kaiser Permanente's integrated health care delivery system, were randomized to receive either a tailored expert system or information-only Web-based weight management materials. Weight change and program satisfaction were assessed by self-report through an Internet-based survey at 3- and 6-month follow-up periods.