TABLE 2.
Demographics and enrollment laboratory values for the cross-sectional cohort
| FT females | Frequent FT females | HI females | FT males | Deferred males | HI males | ||
|---|---|---|---|---|---|---|---|
| White race | n (Col %) | 923 (42%) | 603 (74.7%) | 781 (95.5%) | 751 (41.7%) | 140 (76.5%) | 1536 (93%) |
| Black race | n (Col %) | 399 (18.2%) | 75 (9.3%) | 6 (0.7%) | 280 (15.6%) | 25 (13.7%) | 32 (1.9%) |
| Asian race | n (Col %) | 406 (18.5%) | 53 (6.6%) | 8 (1%) | 456 (25.3%) | 8 (4.4%) | 37 (2.2%) |
| Other/unknown race | n (Col %) | 172 (7.8%) | 29 (3.6%) | 16 (2%) | 134 (7.4%) | 7 (3.8%) | 30 (1.8%) |
| Hispanic ethnicity | n (Col %) | 298 (13.6%) | 47 (5.8%) | 7 (0.9%) | 179 (9.9%) | 3 (1.6%) | 17 (1%) |
| Age (Years) | Mean | 35.9 | 51.3 | 58.6 | 37.1 | 57.2 | 57.9 |
| Weight (lbs) | Mean | 160.8 | 166.4 | 164.7 | 190.2 | 196.1 | 201.3 |
| Body mass index | Mean | 27.1 | 27.9 | 27.7 | 27.5 | 28.1 | 28.8 |
| Any iron supplement | n (%) | 716 (32.6%) | 469 (58.1%) | 509 (62.2%) | 404 (22.4%) | 86 (47%) | 677 (41%) |
| Iron daily | n (%) | 408 (18.6%) | 281 (34.8%) | 392 (47.9%) | 227 (12.6%) | 59 (32.2%) | 546 (33.1%) |
| Iron at least weekly (<daily) | n (%) | 224 (10.2%) | 130 (16.1%) | 92 (11.2%) | 129 (7.2%) | 17 (9.3%) | 103 (6.2%) |
| No iron or <weekly | n (%) | 1556 (70.8%) | 381 (47.2%) | 319 (39%) | 1437 (79.8%) | 103 (56.3%) | 984 (59.6%) |
| Current smoking: Yes vs No | n (%) | 242 (11%) | 28 (3.5%) | 55 (6.7%) | 224 (12.4%) | 6 (3.3%) | 78 (4.7%) |
| Menstruating: Yes vs. No | n (%) | 303 (13.8%) | 335 (41.5%) | 518 (63.3%) | - | - | - |
| Venous Hgb (g/dL) | Mean | 13.3 | 12.8 | 13.5 | 15 | 13.5 | 14.3 |
| Fingerstick Hgb (g/dL) | Mean | 13.7 | 13.4 | 14 | 15.2 | 13.9 | 14.6 |
| Ferritin (ng/mL) | Mean | 49.6 | 20.1 | 21 | 131.7 | 25.4 | 26.3 |