| NCEP 2004 | NCEP 2001 |
---|---|---|
 | OR (95% CI) | OR (95% CI) |
 | n = 62 | n = 62 |
Crude | 0.415 (0.21-0.82), | 0.368 (0.19-0.73), |
 | P = 0.011 | P = 0.004 |
Model a | 0.421 (0.21-0.84), | 0.373 (0.19-0.75), |
 | P = 0.014 | P = 0.006 |
Model b | 0.468 (0.23-0.99), | 0.408 (0.19-0.84), |
 | P = 0.038 | P = 0.015 |