Table 1 Subject Characteristics
Vitamin D Deficient | Vitamin D Sufficient | p value | |
|---|---|---|---|
n | 563 | 981 | |
Age in years | 57.07 (7.92) | 62.09 (8.67) | < 0.001 |
Female | 302 (53.6) | 520 (53.0) | 0.851 |
Non-Hispanic White | 236 (41.9) | 789 (80.4) | < 0.001 |
African American | 327 (58.1) | 192 (19.6) | < 0.001 |
Current Smoker | 352 (62.5) | 385 (39.2) | < 0.001 |
Pack-years smoking | 42.26 (25.99) | 44.83 (24.56) | 0.053 |
Post-bronchodilator FEV1 percent predicted | 75.96 (25.01) | 73.24 (24.86) | 0.039 |
COPD | 291 (51.8) | 572 (58.3) | 0.015 |