Table 2.
Comparison of the characteristics at the time of randomization of all randomized Look AHEAD participants and the subset that had more than one cognitive assessment
| Included (N = 1089) | Excluded (N = 4055) | P-value | |
|---|---|---|---|
| Age, mean ± SD, years | 58.3 ± 6.7 | 58.8 ± 6.9 | 0.0269 |
| Gender, No. (%) | 0.5822 | ||
| Male | 449 (41.2%) | 1633 (40.3%) | |
| Female | 641 (58.8%) | 2422 (59.7%) | |
| Race, No. (%) | <0.0001 | ||
| African American | 224 (20.6%) | 580 (14.3%) | |
| American Indian | 7 (0.6%) | 251 (6.2%) | |
| Hispanic | 41 (3.8%) | 639 (15.8%) | |
| Non-Hispanic White | 787 (72.2%) | 2465 (60.8%) | |
| Other | 31 (2.8%) | 120 (3.0%) | |
| Education, No. (%) | <0.0001 | ||
| High school | 561 (51.5%) | 2033 (50.1%) | |
| College graduate | 245 (22.5%) | 873 (21.5%) | |
| Postcollege | 233 (21.4%) | 743 (18.3%) | |
| Other a | 51 (4.7%) | 406 (10.0%) | |
| BMI, mean ± SD, kg/m2 | 35.8 ± 5.8 | 36.0 ± 5.9 | 0.2380 |
| Obesity Group (kg/m2), No. (%) | 0.5063 | ||
| BMI < 30kg/m2 | 169 (15.5%) | 596 (14.7%) | |
| BMI ≥ 30kg/m2 | 921 (84.5%) | 3459 (85.3%) | |
| Paffenbarger, mean ± SD, % | 816.7 ± 1016 | 875.6 ± 1190 | 0.2144 |
| HbA1c, mean ± SD, % | 7.2 ± 1.1 | 7.3 ± 1.2 | 0.0066 |
| Glucose, mean ± SD, mgdL | 149.8 ± 44.0 | 153.9 ± 46.0 | 0.0083 |
| Prior CVD, No. (%) | 0.2841 | ||
| No | 950 (87.2%) | 3483 (85.9%) | |
| Yes | 140 (12.8%) | 572 (14.1%) |
Abbreviations: BMI, body mass index; CVD, cardiovascular disease; HbA1c, hemoglobin A1c; SD, standard deviation.
a “Other” educational attainment referred to a highest level of educational attainment that was less than a high school diploma or general education development (GED), or did not fit into any of the following categories: high school diploma or equivalency (GED), some vocational school, some college, associate degree (junior college), Bachelor’s degree, some graduate school, Master’s degree, doctorate, professional (MD, JD, DDS, etc.).