Table 1. Descriptive data of study participants by race and sex.
| Whites | African Americans | P for race difference | ||||
| Male (n=322) | Female (n=407) | Male (n=115) | Female (n=193) | Male | Female | |
| Age (year) | 40.9 (6.4) | 39.9 (7.2) | 41.3 (6.3) | 39.6 (7.1)* | 0.488 | 0.619 |
| BMI (kg/m2) | 30.1 (5.9) | 28.8 (7.3)* | 30.6 (8.0) | 33.0 (9.3)* | 0.496 | <0.001 |
| Alcohol use, n (%) | <0.001 | 0.111 | ||||
| No | 133 (41.3) | 155 (38.1) | 43 (37.4) | 89 (46.1)* | ||
| Light | 131 (40.7) | 194 (47.7) | 29 (25.2) | 75 (38.9)* | ||
| Heavy | 58 (18.0) | 58 (14.2) | 43 (37.4) | 29 (15.0)* | ||
| Smokers, n (%) | 81 (25.2) | 122 (30.0) | 47 (40.9) | 59 (30.6) | 0.002 | 0.882 |
| Pack-yearsa | 16.8 (12.0) | 12.8 (9.4)* | 10.6 (7.9) | 8.2 (6.9) | <0.001 | <0.001 |
| LTL (kb) | 6.827 (0.663) | 6.921 (0.721) | 7.274 (0.773) | 7.456 (0.732) | <0.001 | <0.001 |
BMI=body mass index; LTL=leukocyte telomere length
a, Pack-years of smoking
*, P<0.05 for sex difference