Table 4.

Potential factors associated with iron deficiency in Black or American Indian/Alaska Native Race

	Iron Deficient	Iron Normal	P value†
Black Race
Number	15 (75)	5 (25)
Female sex	13 (87)	5 (100)	1.0
Obesity	15 (100)	4 (80)	0.25
Diabetes present	8 (53)	3 (60)	1.0
BMI (kg/m2)	38.8 ± 6.4	34.4 ± 5.8	0.089
Waist circumference	114 ± 17	107 ± 14	0.52
No. of alcoholic drinks/week	0.1 ± 0.17	0 ± 0	0.21
Dietary iron consumed (mg/day)	11.3 ± 8.5	14.1 ± 8.3	0.38
Dietary vitamin C (mg/day)	134 ± 157	108 ± 58	0.51
Supplemental vitamin C (mg/day)	0 ± 0	140 ± 269	0.02
American Indian or Alaska Native Race
Number	22 (51)	21 (49)
Female sex	16 (73)	12 (57)	0.35
Obesity	19 (86)	12 (57)	0.045
Diabetes present	8 (36)	4 (19)	0.31
BMI (kg/m2)	36.6 ± 4.3	32.3 ± 6.0	0.009
Waist circumference	113 ± 13	103 ± 12	0.016
No. of alcoholic drinks/week	0.14 ± 0.18	0.63 ± 1.9	0.98
Dietary iron consumed (mg/day)	13.0 ± 6.2	15.4 ± 6.3	0.24
Dietary vitamin C (mg/day)	130 ± 153	117 ± 60	0.65
Supplemental vitamin C (mg/day)	118 ± 263	65 ± 154	0.38

Values are N (%) or mean ± SD

^†P values from Fisher’s exact test for categorical variables or Wilcoxon rank sum test for continuous variables.