Table 1.
Basic characteristic of study subjects with C3 and C4 levels
| Phenotype and Ancestry | Sample Size, N | Mean Age (SD), yr | Mean Nadir C3 Level (SD), mg/dl | Women, % |
|---|---|---|---|---|
| C3 levels | ||||
| European | 3210 | 55.3 (16.9) | 124.74 (35.09) | 63 |
| African | 589 | 47.9 (16.8) | 129.75 (37.22) | 75 |
| East Asian | 150 | 40.8 (18.8) | 110.75 (37.73) | 71 |
| Total | 3949 | 48.01 (17.5) | 121.74 (36.68) | 70 |
| C4 levelsa | ||||
| European | 3247 | 55.6 (16.7) | 26.84 (10.31) | 63 |
| African | 600 | 48.2 (16.7) | 33.98 (13.07) | 75 |
| East Asian | 151 | 40.8 (16.8) | 26.28 (11.88) | 71 |
| Total | 3998 | 48.2 (16.7) | 29.03 (11.75) | 70 |
a
Ninety-six percent of participants overlap between the two datasets.