Table 2. Percentage of study participants with 25(OH)D concentration more than or Less than 40 or 20 ng/mL stratified by race/ethnicity a .
| Race | 25(OH)D (ng/mL) 8–13 wk |
25(OH)D (ng/mL) 22–24 wk |
25(OH)D (ng/mL) 25–36 wk |
||||||
|---|---|---|---|---|---|---|---|---|---|
| < 40 ng/mL | ≥ 40 ng/mL | p -Value | < 40 ng/mL | ≥ 40 ng/mL | p -Value | < 40 ng/mL | ≥ 40 ng/mL | p -Value | |
| Non-Hispanic white | 82 (82%) | 18 (18%) | 0.0002 | 39 (39%) | 61 (61%) | 0.002 | 32 (32%) | 68 (68%) | 0.0006 |
| Non-Hispanic black | 66 (97%) | 2 (3%) | 43 (63.2%) | 25 (36.8%) | 42 (61.8%) | 26 (38.24%) | |||
| Hispanic | 75 (97.4%) | 2 (2.6%) | 47 (61%) | 30 (39%) | 37 (48%) | 40 (52%) | |||
| < 20 ng/mL | ≥ 20 ng/mL | p -Value | < 20 ng/mL | ≥ 20 ng/mL | p -Value | < 20 ng/mL | ≥ 20 ng/mL | p -Value | |
| Non-Hispanic white | 11 (11%) | 89 (89%) | <0.0001 | 1 (1%) | 99 (99%) | 0.0004 | 0 | (1) 100% | 0.0007 |
| Non-Hispanic black | 31 (45.6%) | 37 (54.4%) | 12 (17.7%) | 56 (82.4%) | 10 (14.7%) | 58 (85.3%) | |||
| Hispanic | 18 (23.4%) | 59 (76.6%) | 6 (7.8%) | 71 (92.2%) | 9 (11.7%) | 68 (88.3%) | |||
Abbreviation: 25(OH)D, 25-hydroxyvitamin D.
a
Calculated from chi-square and Fisher's exact tests.