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

Newby et al. Nutrition Journal 2012 11:25   doi:10.1186/1475-2891-11-25

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