Effects of age and sex on hematologic traits
| Trait . | Sex (t statistic, P value) . | Age (r, P value) . | Total R2 . |
|---|---|---|---|
| FC | −2.57, .01 | −.12, <.001 | .02 |
| Hb | 14.31, <.001 | .10, .007 | .24 |
| PCV | 12.25, <.001 | NS | .18 |
| RBC | 12.41, <.001 | NS | .18 |
| MCV | NS | NS | — |
| MCH | NS | .08, .05 | .01 |
| MCHC | NS | .08, .05 | .01 |
| WBC | NS | NS | — |
| Platelets | −2.96, .003 | NS | .01 |
| Trait . | Sex (t statistic, P value) . | Age (r, P value) . | Total R2 . |
|---|---|---|---|
| FC | −2.57, .01 | −.12, <.001 | .02 |
| Hb | 14.31, <.001 | .10, .007 | .24 |
| PCV | 12.25, <.001 | NS | .18 |
| RBC | 12.41, <.001 | NS | .18 |
| MCV | NS | NS | — |
| MCH | NS | .08, .05 | .01 |
| MCHC | NS | .08, .05 | .01 |
| WBC | NS | NS | — |
| Platelets | −2.96, .003 | NS | .01 |
NS indicates not significant. t statistics are shown if significant (P < 0.5) for sex differences. Pearson correlation coefficients (r) are shown if significant (P < 0.5) for age effects with coefficients of determination (R2). A positive t statistic indicates a higher mean in men; a positive correlation coefficient indicates an increase with age.