Table 2.
Adjusted odds of cluster 2 membership for women based on socioeconomic, demographic, behavioral, dietary, and reproductive correlates for women included in this analysis from SELF (N= 749).a,b
| Variable | Odds Ratio (95% CI) |
|---|---|
| Age at enrollment, 1-year increase | 1.27 (1.20, 1.35) |
| Marital status | |
| Never married | Ref |
| Currently married | 0.92 (0.59, 1.43) |
| Previously married | 0.90 (0.54, 1.51) |
| Education | |
| HS degree/GED | Ref |
| Some college/Associate’s/Technical school | 0.64 (0.38, 1.05) |
| Bachelor’s/Master’s/PhD | 0.61 (0.32, 1.17) |
| Income | |
| <$20,000/year | Ref |
| $20-50,000/year | 1.33 (0.86, 2.06) |
| >$50,000/year | 1.68 (0.92, 3.04) |
| Employment | |
| Not employed | Ref |
| Employed <30 hours/week | 1.27 (0.75, 2.18) |
| Employed ≥30 hours/week | 1.25 (0.82, 1.91) |
| U.S. born | |
| No | Ref |
| Yes | 0.95 (0.15, 6.00) |
| Smoking | |
| Non-smoker | Ref |
| Former smoker | 1.12 (0.58, 2.15) |
| Current smoker <10 cigarettes/day | 1.09 (0.62, 1.94) |
| Current smoker ≥10 cigarettes/day | 2.63 (1.07, 6.50) |
| Alcohol use | |
| Non-drinker | Ref |
| Moderate consumption | 1.19 (0.79, 1.80) |
| Heavy consumption | 2.23 (1.32, 3.78) |
| BMI (kg/m2), 1-unit increase | 0.91 (0.89, 0.94) |
| Daily servings of dairy (milk equivalents) | 1.03 (0.80, 1.31) |
| Meats, ounces/day | 0.98 (0.89, 1.09) |
| Poultry, ounces/day | 1.18 (1.01, 1.39) |
| Eggs, ounces/day | 1.00 (0.69, 1.45) |
| Fish high in omegas, ounces/day | 1.12 (0.35, 3.56) |
| Fish low in omegas, ounces/day | 1.06 (0.70, 1.60) |
| Daily servings of fruits | 0.94 (0.85, 1.04) |
| Daily servings of vegetables | 0.99 (0.79, 1.22) |
| Parity | |
| Nulliparous | Ref |
| 1 | 0.78 (0.48, 1.27) |
| 2 | 1.49 (0.84, 2.65) |
| ≥3 | 1.24 (0.65, 2.37) |
| Totals months spent breastfeeding, 1-month increase | 0.96 (0.93, 1.00) |
| First child of mother | |
| No | Ref |
| Yes | 0.98 (0.69, 1.39) |
| Breastfed in infancy | |
| Never | Ref |
| <3 months | 1.70 (1.03, 2.80) |
| ≥3 months | 1.88 (1.15, 3.09) |
| Age at menarche (years) | 1.00 (0.88, 1.14) |
| Ever use oral contraceptives | |
| No | Ref |
| Yes | 0.94 (0.63, 1.38) |
| Ever use progestin-only injectable | |
| No | Ref |
| Yes | 0.96 (0.66, 1.39) |
| Hormonal contraceptive use at baseline | |
| No | Ref |
| Yes | 1.06 (0.71, 1.58) |
| Years since last birth | |
| Nulliparous | Ref |
| <2 years | 0.72 (0.44, 1.20) |
| 2-4 years | 0.94 (0.57, 1.57) |
| >=5 years | 0.98 (0.57, 1.71) |
a
Cluster 1 sample size was 391 and cluster 2 was 358 women.
b
Cluster 1 is the reference cluster.
c
Cluster 2 was indicative of higher concentrations of all chemicals.
d
Odds ratios were adjusted for all other correlates.
e
Associations with years since last birth were estimated from a separate model that did not include parity or total months spent breastfeeding due to high collinearity.