Table 3.
Weighted regression model predicting mean platelet volume (C-reactive protein as continuous measure)*
| Variable | b | SE | 95% CI | P value |
|---|---|---|---|---|
| Unadjusted model | ||||
| CRP (continuous) | −0.02 | 0.01 | (−0.05, 0.00) | 0.065 |
| Adjusted model | ||||
| Age (years) (ref = 18–44) | ||||
| 45–64 | −0.10 | 0.02 | (−0.14, −0.06) | <0.001 |
| ≥65 | −0.09 | 0.04 | (−0.17, −0.01) | 0.021 |
| Male (ref = female) | −0.05 | 0.02 | (−0.08, −0.01) | 0.014 |
| Race/ethnicity (ref = white) | ||||
| Black | 0.15 | 0.04 | (0.07, 0.23) | 0.001 |
| Mexican American | 0.16 | 0.04 | (0.09, 0.23) | <0.001 |
| Other Hispanic | 0.06 | 0.06 | (−0.05, 0.17) | 0.287 |
| Other race | −0.09 | 0.04 | (−0.17, 0.00) | 0.048 |
| CRP (continuous) | −0.04 | 0.01 | (−0.06, −0.01) | 0.002 |
| BMI (ref = 18.5 to <25 kg/m2) | ||||
| <18.5 | 0.02 | 0.08 | (−0.13, 0.17) | 0.788 |
| 25 to <30 | 0.06 | 0.02 | (0.02, 0.10) | 0.005 |
| ≥30 | 0.07 | 0.02 | (0.03, 0.12) | 0.003 |
| Self-reported doctor diagnosis | ||||
| Hypertension | 0.04 | 0.02 | (−0.01, 0.08) | 0.110 |
| High cholesterol | 0.09 | 0.03 | (0.03, 0.15) | 0.003 |
| Diabetes mellitus | 0.05 | 0.07 | (−0.09, 0.18) | 0.506 |
BMI indicates body mass index, CI, confidence interval; CRP, C-reactive protein; ref, reference; SE, standard error.
*
r-squared = 0.013, N = 16,329. Significant P values are presented in bold.