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. 2015 Aug 7;64(12):4312–4321. doi: 10.2337/db15-0441

Table 2.

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

Look AHEAD
DPP
Characteristics Total
(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 American
291 (13.8)
61 (12.8)
230 (14.0)
136 (16.3)
33 (16.4)
103 (16.3)
 American Indian/Alaskan Nativea
40 (1.9)
11 (2.3)
29 (1.8)
17 (2.0)
2 (1.0)
15 (2.4)
 Asian/Pacific Islander
14 (0.7)
1 (0.2)
13 (0.8)
45 (5.4)
5 (2.5)
40 (6.3)
 Non-Hispanic white
1,518 (72.0)
350 (74.0)
1,168 (71.0)
486 (58.3)
129 (64.2)
357 (56.4)
 Hispanic/Latino
220 (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






  Baseline
102.0 (19.8)
103.8 (20.1)
101.4 (20.0)
93.7 (19.9)
95.5 (20.2)
93.1 (19.8)
  Year 1
91.8 (18.5)
96.7 (18.8)
90.4 (18.2)
84.9 (18.5)
88.8 (19.4)
83.6 (18.0)
 Women






  Baseline
95.9 (17.8)
97.6 (18.4)
95.3 (17.6)
91.4 (20.0)
93.2 (19.4)
90.8 (20.2)
  Year 1
86.6 (16.8)
91.0 (17.2)
85.2 (16.4)
82.8 (18.6)
86.5 (19.1)
81.5 (18.3)
 Men






  Baseline
110.3 (19.0)
113.4 (18.9)
109.5 (20.0)
97.9 (19.0)
100.7 (21.0)
97.2 (18.4)
  Year 1
98.9 (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 2
2.4 (5.2)
0.6 (6.4)
2.9 (4.6)
2.0 (4.2)
2.7 (4.9)
1.7 (4.0)
  Year 3
3.7 (7.2)
1 (8.1)
4.5 (6.7)
3.3 (5.8)
4.2 (6.4)
3.0 (5.6)
  Year 4
4.2 (8.0)
1.4 (8.5)
5.1 (7.7)
4.3 (7.7)
4.6 (9.2)
4.2 (7.2)
 Women






  Year 2
2.1 (5.3)
0.2 (6.7)
2.7 (4.6)
2.1 (4.4)
2.9 (5.0)
1.8 (4.2)
  Year 3
3.4 (7.1)
0.4 (8.9)
4.4 (6.1)
3.5 (6.2)
4.2 (6.9)
3.3 (6.0)
  Year 4
3.8 (8.1)
0.7 (9.2)
4.8 (7.5)
4.9 (8.4)
4.4 (10.0)
5.1 (7.7)
 Men






  Year 2
2.7 (5.0)
1.3 (6.0)
3.0 (4.7)
1.7 (3.8)
2.2 (4.7)
1.6 (3.6)
  Year 3
4.1 (7.4)
2.0 (6.7)
4.7 (7.4)
2.8 (4.9)
4.2 (5.3)
2.4 (4.8)
  Year 4 4.9 (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.