TABLE 5.
Risk factor | Ferritin < 12 ng/mL | Ferritin < 26 ng/mL | |||
---|---|---|---|---|---|
Sex | |||||
Female | 3.46 (2.64, 4.54) | 5.30 (4.23, 6.62) | |||
Male | Ref | Ref | |||
Age group (years) | Female | Male | Female | Male | |
18-19 | 2.77 (2.09-3.67) | 1.60 (0.98-2.62) | 2.50 (1.91-3.27) | 1.56 (1.08-2.27) | |
20-29 | 1.92 (1.55-2.38) | 1.13 (0.82-1.55) | 1.67 (1.37-2.03) | 1.11 (0.87,1.41) | |
30-39 | 1.24 (0.99-1.55) | 1.31 (0.96-1.77) | 1.07 0.88-1.31) | 1.11 (0.88-1.41) | |
40-49 | Ref | Ref | Ref | Ref | |
50-59 | 0.56 (0.46-0.69) | 0.96 (0.74-1.25) | 0.41 (0.34-0.50) | 1.05 (0.86-1.28) | |
60+ | 0.39 (0.32-0.49) | 0.89 (0.69-1.15) | 0.37 (0.30-0.44) | 1.14 (0.94-1.39) | |
Race | |||||
African American | 0.81 (0.68-0.96) | 0.86 (0.75-0.99) | |||
Asian | 0.76 (0.62-0.91) | 0.66 (0.57-0.77) | |||
Hispanic | 1.25 (1.04-1.52) | 1.19 (1.01-1.41) | |||
NHW | Ref | Ref | |||
Donation frequency | |||||
0 | Ref | Ref | |||
1-2 | 1.86 (1.58-2.19) | 2.22 (1.96-2.52) | |||
3-4 | 3.64 (3.03-4.38) | 5.02 (4.33-5.83) | |||
5-6 | 6.68 (5.46-8.18) | 9.66 (8.15-11.43) | |||
7+ | 10.21 (8.47-12.30) | 17.04 (14.60-19.89) | |||
Weight (per pound) | 0.993 (0.992-0.995) | 0.994 (0.993-0.995) | |||
Iron supplement | |||||
Daily | 0.59 (0.52-0.66) | 0.67 (0.61-0.75) | |||
Less than daily | 0.81 (0.70-0.94) | 0.95 (0.83-1.08) | |||
None | Ref | Ref | |||
Smoking | |||||
Yes | 0.66 (0.54-0.81) | 0.72 (0.61-0.84) | |||
Missing | 1.10 (0.94-1.29) | 1.16 (1.01-1.34) | |||
No | Ref | Ref | |||
Antacids | |||||
Yes | 1.24 (1.08-1.42) | 1.21 (1.08-1.37) | |||
No | Ref | Ref | |||
Hormones | |||||
Female | 0.85 (0.72-1.0) | 0.78 (0.67-0.90) | |||
Male | 2.29 (1.35-3.89) | 1.49 (0.92-2.41) | |||
None | Ref | Ref |
Reference group is 40-year-old male with 0 donations in last 24 months, non-smoker, weight 180 pounds, not taking supplemental iron, hormones, or antacids.