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Table 1—

Weight, physical activity, and diet at baseline and annual changes from baseline among participants in the ILS group: DPP, 1996–2001

Baseline
Year 1
Year 2
Year 3
Mean (25th–75th percentile)*Mean change (25th–75th percentile)*Mean change (25th–75th percentile)*Mean change (25th–75th percentile)*
Weight     
    n 1,079 1,023 999 638 
    Weight (kg) 94.1 (79.2–105.1) −6.8 (−10.0 to −2.6) −5.4 (−8.5 to −1.10) −4.1 (−7.3 to 0.0) 
    BMI (kg/m233.9 (28.9–37.2) −2.4 (−3.5 to −1.0) −1.9 (−3.0 to −0.4) −1.5 (−2.7 to 0.0) 
    Percent weight loss — 7.2 (3.0–10.5) 5.8 (1.2–9.8) 4.5 (0–8.5) 
Energy expenditure     
    n 1,077 1,013 995 635 
    Modifiable Activity Questionnaire (MET hours/week) 15.5 (3.8–19.3) +6.6 (−0.1 to +14.4) +5.7 (−0.7 to +13.9) +4.3 (−2.3 to +13.1) 
    Low Level Physical Activity Recall (MET hours/week)§ 67.1 (36.3–91.1) +8.3 (−15.1 to +30.9) +8.0 (−17.0 to +33.9) +8.1 (−19.3 to +35.2) 
Energy intake     
    n 1,054 987 — — 
    Total kcal/day 2,137 (1,452–2,550) −452.3 (−803.3 to +29.0) — — 
    Total fat/day (g) 83.0 (49.3–102.5) −30.3 (−47.6 to −6.3) — — 
    Percent of calories from fat 34.1 (29.6–38.5) −6.6 (−10.9 to −1.9) — — 
Baseline
Year 1
Year 2
Year 3
Mean (25th–75th percentile)*Mean change (25th–75th percentile)*Mean change (25th–75th percentile)*Mean change (25th–75th percentile)*
Weight     
    n 1,079 1,023 999 638 
    Weight (kg) 94.1 (79.2–105.1) −6.8 (−10.0 to −2.6) −5.4 (−8.5 to −1.10) −4.1 (−7.3 to 0.0) 
    BMI (kg/m233.9 (28.9–37.2) −2.4 (−3.5 to −1.0) −1.9 (−3.0 to −0.4) −1.5 (−2.7 to 0.0) 
    Percent weight loss — 7.2 (3.0–10.5) 5.8 (1.2–9.8) 4.5 (0–8.5) 
Energy expenditure     
    n 1,077 1,013 995 635 
    Modifiable Activity Questionnaire (MET hours/week) 15.5 (3.8–19.3) +6.6 (−0.1 to +14.4) +5.7 (−0.7 to +13.9) +4.3 (−2.3 to +13.1) 
    Low Level Physical Activity Recall (MET hours/week)§ 67.1 (36.3–91.1) +8.3 (−15.1 to +30.9) +8.0 (−17.0 to +33.9) +8.1 (−19.3 to +35.2) 
Energy intake     
    n 1,054 987 — — 
    Total kcal/day 2,137 (1,452–2,550) −452.3 (−803.3 to +29.0) — — 
    Total fat/day (g) 83.0 (49.3–102.5) −30.3 (−47.6 to −6.3) — — 
    Percent of calories from fat 34.1 (29.6–38.5) −6.6 (−10.9 to −1.9) — — 
*

Twenty-fifth to 75th percentile of change in variable.

P < 0.0001 compared with baseline value by paired t test.

One-year recall using Modifiable Activity Questionnaire (see research design and methods).

§

Seven-day recall using Low Level Physical Activity Recall (see research design and methods).

Diet information was not collected after year 1 (see research design and methods).

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