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
    n1,0791,023999638
    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/m2)33.9 (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 loss7.2 (3.0–10.5)5.8 (1.2–9.8)4.5 (0–8.5)
Energy expenditure
    n1,0771,013995635
    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
    n1,054987
    Total kcal/day2,137 (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 fat34.1 (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).