Table 4.
Daily micronutrient intakes among 12,105 women participating in the Reasons for Geographic and Racial Differences in Stroke study, stratified by race and geographic region
| Micronutrients (intakes/d)1 | Stroke Buckle | Stroke Belt |
Other (non-stroke buckle or belt) |
P value between regions3 | ||||||
|
Black (n = 971) |
White (n = 1,905) |
P value2 |
Black (n = 1,600) |
White (n = 2,603) |
P value2 |
Black (n = 2,237) |
White (n = 2,789) |
P value2 |
||
| Vitamin A, IU | 7352 (6733) | 7557 (6447) | 0.34 | 6728 (6497) | 7446 (6764) | 0.0005 | 7154 (6517) | 8225 (7186) | <0.0001 | <0.0001 |
| Thiamin, mg | 1.1 (0.7) | 1.1 (0.6) | 0.47 | 1.1 (0.7) | 1.1 (0.6) | 0.12 | 1.1 (0.7) | 1.1 (0.6) | 0.04 | 0.03 |
| Riboflavin, mg | 1.2 (0.7) | 1.3 (0.8) | <0.0001 | 1.2 (0.8) | 1.4 (0.8) | <0.0001 | 1.2 (0.8) | 1.4 (0.8) | <0.0001 | 0.01 |
| Niacin, mg | 14.4 (10.9) | 15.7 (9.4) | <0.0001 | 14.8 (10.5) | 16.3 (9.9) | <0.0001 | 14.5 (10) | 16.4 (9.4) | <0.0001 | 0.17 |
| Folate, μg | 283 (200) | 293 (178) | 0.27 | 293.6 (203) | 307 (181) | 0.03 | 287 (191) | 303 (170) | <0.0001 | 0.05 |
| Vitamin B-12, μg | 2.6 (2.2) | 2.9 (2.2) | <0.0001 | 2.6 (2.3) | 3.0 (2.3) | <0.0001 | 2.4 (2.1) | 3.0 (2.2) | <0.0001 | 0.01 |
| α-tocopherol, μg | 7.4 (5.9) | 8.2 (5.4) | <0.0001 | 7.8 (5.7) | 8.6 (5.8) | <0.0001 | 7.9 (5.8) | 8.6 (5.6) | <0.0001 | 0.0002 |
| β-carotene, μg | 2918 (2946) | 2778 (2676) | 0.18 | 2706 (2837) | 2751 (2822) | 0.98 | 2812 (2877) | 2933 (3012) | 0.21 | 0.0009 |
| Vitamin C, mg | 101 (96.3) | 79.1 (73.0) | <0.0001 | 101 (96) | 80.5 (76.0) | <0.0001 | 98.5 (92.7) | 93.2 (78.1) | 0.0002 | <0.0001 |
| Vitamin D, IU | 83.0 (91.1) | 105 (117) | <0.0001 | 90 (107) | 113 (120) | <0.0001 | 86.8 (104) | 111 (125) | <0.0001 | 0.07 |
| Calcium, mg | 460 (394) | 572 (419) | <0.0001 | 506 (394) | 606 (433) | <0.0001 | 485 (392) | 643 (465) | <0.0001 | <0.0001 |
| Magnesium, mg | 212 (137) | 247 (140) | <0.0001 | 218 (138) | 255 (147) | <0.0001 | 221 (143) | 259 (141) | <0.0001 | 0.001 |
| Potassium, mg | 2093 (1362) | 2361 (1276) | <0.0001 | 2148 (1346) | 2464 (1341) | <0.0001 | 2169 (1356) | 2570 (1310) | <0.0001 | <0.0001 |
| Iron, mg | 9.7 (6.9) | 10.5 (6.3) | 0.0002 | 10.1 (7.0) | 11.0 (6.8) | <0.0001 | 9.7 (6.5) | 10.9 (6.3) | <0.0001 | 0.04 |
| Sodium, mg | 1779 (1352) | 1889 (1112) | 0.02 | 1854 (1356) | 1947 (1186) | 0.04 | 1806 (1274) | 1980 (1081) | <0.0001 | 0.009 |
| Cholesterol, mg | 161 (159) | 155 (113) | 0.13 | 167 (150) | 156 (124) | 0.002 | 152 (142) | 162 (124) | 0.005 | 0.77 |
1Values are medians (IQRs). Micronutrients are adjusted for total energy intake using the nutrient residual method
2P values compare differences in median intakes between races within region (i.e., black vs. white) using the Wilcoxon two-sample test
3Global P values compare differences in median intakes across all three regions (i.e., Stroke Buckle vs. Stroke Belt vs. Other) and were calculated using the Kruskal-Wallis test