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. Author manuscript; available in PMC: 2018 Mar 1.
Published in final edited form as: Addict Biol. 2015 Oct 12;22(2):535–549. doi: 10.1111/adb.12317

Table 1.

Sample characteristics.

Stage-1 cohort (N = 4,137) Stage-2 cohort(N = 1,409)
Yale-Penn (N = 3,017) SAGE (N = 1,120)
AA (N = 1,686) EA (N = 1,331) AA (N = 295) EA (N = 825) AA (N = 606) EA (N = 803)
age-years, mean±SD 41.7±8.3 38.8±10.1 40.5±7.4 39.8±9.5 41.7±10.4 39.2±12.3
Female (%) 707 (42) 495 (37) 126 (42) 311 (38) 193 (32) 260 (32)
BMI < 19 (%) 23 (1) 26 (2) 3 (1) 17 (2) 10 (2) 13 (2)
BMI 19–24.9 (%) 447 (27) 439 (33) 68 (23) 307 (37) 140 (23) 280 (35)
BMI 25–29.9 (%) 590 (35) 494 (37) 119 (40) 316 (38) 220 (36) 303 (38)
BMI 30–34.9 (%) 339 (20) 246 (19) 56 (19) 121 (15) 127 (21) 131 (16)
BMI > 35 (%) 287 (17) 126 (9) 49 (17) 64 (8) 109 (18) 76 (9)