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. 2016 Mar 30;11(3):e0151610. doi: 10.1371/journal.pone.0151610

Table 3. Predictors of Safety-Net Use among Dual Eligible Individuals.

Odds Ratio (95% CI)
Unadjusted Adjusted*
Age, years
    18–64 0.65 (0.42–1.02) 0.86 (0.59–1.25)
    ≥ 65 [Reference] [Reference]
Female 0.95 (0.64–1.40) 0.86 (0.54–1.39)
Race/ethnicity
    White, non-Hispanic [Reference] [Reference]
    Black, non-Hispanic 1.10 (0.46–2.63) 1.44 (0.63–3.28)
    Hispanic 4.31 (2.05–9.07) 1.90 (0.91–3.97)
    Other 2.01 (0.54–7.43) 0.89 (0.23–3.39)
Prevalence of poverty in zip code
    Lowest (<5%) [Reference] [Reference]
    Low (5–9.9%) 1.10 (0.35–3.45) 1.20 (0.29–4.90)
    Moderate (10.0–19.9%) 1.30 (0.43–3.89) 1.29 (0.33–5.12)
    High (≥ 20%) 4.97 (1.27–19.37) 3.46 (0.77–15.47)
Prevalence of bachelor’s degree in zip code
    Lowest (<12.8%) 2.08 (0.68–6.36) 1.08 (0.41–2.84)
    Low (12.8–19.7%) 0.86 (0.32–2.32) 0.57 (0.20–1.64)
    Moderate (19.8–31.7%) 0.71 (0.35–1.44) 0.59 (0.25–1.4)
    High (>31.7%) [Reference] [Reference]
Rural area 0.43 (0.15–1.21) 1.21 (0.49–2.98)
Geographic region
    Midwest [Reference] [Reference]
    Northeast 11.69 (3.71–36.80) 10.37 (3.51–30.59)
    South 2.19 (0.88–5.43) 1.67 (0.62–4.55)
    West 12.34 (4.02–37.85) 9.36 (3.05–28.74)
Frequent visits (≥5) in past 12 months 2.18 (0.83–5.75) 2.19 (1.09–4.40)
Polypharmacy (≥4 medications) 2.50 (0.97–6.45) 2.26 (1.04–4.92)
Multimorbidity (≥2 chronic conditions) 1.19 (0.72–1.95) 0.81 (0.44–1.51)
Chronic conditions
    Chronic obstructive pulmonary disease 0.52 (0.23–0.93) 1.02 (0.56–1.86)
    Hypertension 1.69 (1.11–2.57) 1.33 (0.82–2.15)
    Osteoporosis 2.14 (1.15–3.98) 2.32 (1.15–4.68)

* Adjusted for all characteristics listed in Table 1 and accounting for the complex survey sampling design.

p≤0.001.

p≤0.05.