Table 2

Look AHEAD and DPP (weight-regain sample) participant characteristics

Look AHEADDPP
CharacteristicsTotal
(N = 2,116)Comparison
(N = 475)Lifestyle
(N = 1,641)Total
(N = 834)Comparison
(N = 201)Lifestyle
(N = 633)
Women (%)1,224 (58.0)291 (61.3)933 (56.9)544 (65.2)139 (69.2)405 (64.0)
Age (years)59.2 (6.8)59.3 (6.7)59.2 (6.9)51.7 (11.0)50.5 (9.6)52.1 (11.4)
Ethnicity (%)
 African American291 (13.8)61 (12.8)230 (14.0)136 (16.3)33 (16.4)103 (16.3)
 American Indian/Alaskan Nativea40 (1.9)11 (2.3)29 (1.8)17 (2.0)2 (1.0)15 (2.4)
 Asian/Pacific Islander14 (0.7)1 (0.2)13 (0.8)45 (5.4)5 (2.5)40 (6.3)
 Non-Hispanic white1,518 (72.0)350 (74.0)1,168 (71.0)486 (58.3)129 (64.2)357 (56.4)
 Hispanic/Latino220 (10.4)43 (9.1)177 (10.8)150 (18.0)32 (15.9)118 (18.6)
 Other (multiple)33 (1.6)9 (1.9)24 (1.5)
BMI (kg/m2)36.1 (6.1)36.9 (6.0)35.9 (6.1)33.7 (6.4)34.5 (6.7)33.4 (6.3)
Weight (kg)
 Overall
  Baseline102.0 (19.8)103.8 (20.1)101.4 (20.0)93.7 (19.9)95.5 (20.2)93.1 (19.8)
  Year 191.8 (18.5)96.7 (18.8)90.4 (18.2)84.9 (18.5)88.8 (19.4)83.6 (18.0)
 Women
  Baseline95.9 (17.8)97.6 (18.4)95.3 (17.6)91.4 (20.0)93.2 (19.4)90.8 (20.2)
  Year 186.6 (16.8)91.0 (17.2)85.2 (16.4)82.8 (18.6)86.5 (19.1)81.5 (18.3)
 Men
  Baseline110.3 (19.0)113.4 (18.9)109.5 (20.0)97.9 (19.0)100.7 (21.0)97.2 (18.4)
  Year 198.9 (18.4)105.8 (17.6)97.1 (18.2)88.9 (17.5)94.0 (19.4)87.5 (16.7)
Weight regain (kg)
 Overall
  Year 22.4 (5.2)0.6 (6.4)2.9 (4.6)2.0 (4.2)2.7 (4.9)1.7 (4.0)
  Year 33.7 (7.2)1 (8.1)4.5 (6.7)3.3 (5.8)4.2 (6.4)3.0 (5.6)
  Year 44.2 (8.0)1.4 (8.5)5.1 (7.7)4.3 (7.7)4.6 (9.2)4.2 (7.2)
 Women
  Year 22.1 (5.3)0.2 (6.7)2.7 (4.6)2.1 (4.4)2.9 (5.0)1.8 (4.2)
  Year 33.4 (7.1)0.4 (8.9)4.4 (6.1)3.5 (6.2)4.2 (6.9)3.3 (6.0)
  Year 43.8 (8.1)0.7 (9.2)4.8 (7.5)4.9 (8.4)4.4 (10.0)5.1 (7.7)
 Men
  Year 22.7 (5.0)1.3 (6.0)3.0 (4.7)1.7 (3.8)2.2 (4.7)1.6 (3.6)
  Year 34.1 (7.4)2.0 (6.7)4.7 (7.4)2.8 (4.9)4.2 (5.3)2.4 (4.8)
  Year 44.9 (7.8)2.4 (7.2)5.5 (7.8)3.3 (6.1)5.2 (5.9)2.9 (6.2)
  • All variables summarized in mean (SD) format, unless indicated otherwise.

  • aThe number of American Indian participants included in this study is lower than the parent Look AHEAD trial due to lack of institutional review board approval.

  • †Weight regain calculated as Yj weight – Y1 weight (kg) for j = 2, 3, 4.