Table 1. Characteristics and mean plasma IGF1 level (ng ml−1) by racial/ethnic group.
| Variable | African American | Japanese American | Non-Latino White | Latino American | Pa |
|---|---|---|---|---|---|
| No. of subjects (%) | 123 (30) | 71 (18) | 58 (14) | 154 (38) | |
| Mean age (years) | 70.2 | 68.2 | 67.9 | 64.9 | <0.0001 |
| Mean height (in) | 64.1 | 60.2 | 64.0 | 62.4 | <0.0001 |
| Mean weight (lb) | 166.5 | 122.6 | 151.7 | 158.8 | <0.0001 |
| Mean BMI (kg m−2) | 28.5 | 23.9 | 26.1 | 28.7 | <0.0001 |
| Mean plasma IGF1 (ng ml−1)b | |||||
| Crude | 145 (135, 154) | 145 (132, 158) | 145 (130, 159) | 118 (109, 127) | <0.0001 |
| Age adjustedc | 146 (136, 156) | 144 (131, 157) | 145 (130, 159) | 116 (107, 125) | <0.0001 |
a
P-value derived from ANOVA and analysis of covariance models.
b
The associated 95% confidence limits are given in parentheses.
c
Adjusted for age as a categorical variable.