Table 4.
Multivariable Model of Anemia and Body Iron Deficiency Predictors for Older Women (22–49 Years), Including Years of OCP Use and Live Births, N = 2,038
| Predictor | Comparison | Risk ratio (95% CI) | Overall p-value |
|---|---|---|---|
| Race | 0.05 | ||
| Mexican/Hispanic versus White | 1.60 (0.89–2.87) | ||
| Black versus White | 2.06 (1.22–3.49) | ||
| Other versus White | 1.12 (0.30–4.23) | ||
| BMI | 0.05 | ||
| Overweight versus underweight/normal | 0.47 (0.25–0.86) | ||
| Obese versus underweight/normal | 0.75 (0.38–1.51) | ||
| Household food security | 0.03 | ||
| Marginal/low/very low food security versus full food security | 0.52 (0.28–0.94) | ||
| Family poverty-to-income ratio | 0.05 | ||
| <1.00 versus ≥1.00 | 1.98 (1.04–3.80) | ||
| RDA of iron | <0.001 | ||
| Compliant with US RDA on both days versus not compliant with US RDA on either day | 0.04 (0.01–0.27) | ||
| Compliant with US RDA on 1 day versus not compliant with US RDA on either day | 1.52 (0.86–2.67) | ||
| Tobacco/nicotine in last 5 days | 0.02 | ||
| Yes versus no | 0.49 (0.27–0.89) | ||
| Vigorous physical activity | 0.17 | ||
| Yes versus no | 1.57 (0.83–2.98) | ||
| Duration of OCP use, years | 0.46 | ||
| >5 versus never | 0.48 (0.17–1.33) | ||
| >5 versus <1 | 0.64 (0.19–2.12) | ||
| >5 versus 1–5 | 0.54 (0.20–1.44) | ||
| Menstrual years | 0.35 | ||
| ≥25 versus <25 | 1.40 (0.69–2.82) | ||
| Number of live births | 0.06 | ||
| >2 versus 0 or 1 | 1.77 (0.80–3.91) | ||
| >2 versus 2 | 2.27 (1.12–4.60) |