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. 2015 Nov 25;12:E207. doi: 10.5888/pcd12.150251

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This figure illustrates the randomization breakdown of each of the study arms. The left side shows that all secure message-eligible patients were randomized into 4 equal study arms: secure message (Arm 1), IVR (Arm 2), mailed letter (Arm 3) and usual care but no communication about WCC (Arm 4). The right side shows that all secure-message ineligible patients were randomized into 3 equal study arms: IVR (Arm 1), mailed letter (Arm 2), and usual care but no communication about WCC (Arm 3). — Uptake to the Kaiser Permanente Northern California’s Wellness Coaching Center (WCC) by intervention arm. All pairwise comparisons were significant at P .02 (2 by 2 Pearson χ² test). Abbreviations: SM, secure messaging; IVR, interactive voice response.