Table 1.

Features of the Think Health! ¡Vive Saludable! study intervention and comparison groups

	Basic Plus	Basic
Behavioral goals Healthful dietary pattern with reduced fat and other sources of calories Consumption of 1200–1499 kcal/d if body weight less than 100 kg or 1500–1800 kcal/day if body weight greater than 100 kg; even more if very high weight Moderate physical activity gradually increased to and maintained at 150 minutes/week, achieved by walking or similar aerobic activity Meet recommendations for strength training	✓	✓
Core treatment curriculum Year 1 – Looseleaf participant manual with 2 page guidelines for each of 12 sessions based on 14 of the original DPP Lifestyle Balance intervention sessions.* Year 2 – Supplemental and maintenance materials covering the other 2 DPP sessions and reiterating core content from other sessions* Compact Disc (CD) with audio narrated versions of the first 12 intervention sessions*	✓	✓
Aids to enhance adherence Commercially available calorie counter Elastic resistance band Keeping track worksheets adapted from DPP* Physical activity guide with recommended types of physical activity and a zip code based list and map of physical activity resources Automated telephone messages (every other month in Year 2 only) $5 per visit to offset out-of-pocket costs of visit attendance	✓	✓
Contact mode and frequency
Primary care clinician Year 1 – 10–15 minute office visits at baseline and every 4 months Year 2 – 10–15 minute office visits every 4 months until end of study	✓	✓
Lifestyle Coach – in person office visits Year 1 - 10–15 minute office visits baseline and every month Year 2 – every other month until end of study	✓
Implementation Monitoring and Quality Control
Protocol adherence by clinicians and practice staff Monitoring and support by study coordinator and medical director via on-site meetings, email, and phone contact Written visit forms completed by clinicians after each visit	✓	✓
Lifestyle coaching Monitoring and support by two PhD level psychologists Written visit forms completed by coaches after each visit	✓
Adherence Monitoring
Attendance at clinician visits Written visit forms completed by coaches after each visit	✓	✓
Attendance at coaching visits- Written visit forms completed by coaches after each visit	✓