3.3. Intervention participation rates: CDC recognition standards
weight loss
On average participants in the DVD/IVR group completed 15.5 (±8.6) sessions compared to 14.1 (±8.3) for Class/IVR. Approximately, 86.3% of participants in the intervention groups (DVD/IVR: 86.6%; Class/IVR: 86%) met the CDC threshold of completing at least 4 sessions with 48.4% (DVD/IVR: 52.6%; Class/IVR: 44%) staying in the program for at least 6 months, and 29.5% (DVD/IVR: 37.1%; Class/IVR: 21.5%) completing every session during the 12-month program. Average percent weight loss at 12 months for those meeting the CDC threshold were 3.24% (DVD/IVR) and 2.74% (Class/IVR) with 35.74% (DVD/IVR) and 33.44% (Class/IVR) achieving a 5% weight loss.