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Table 1 Risk factors for hospitalization over longitudinal follow-up: demographic characteristics and smoking

From: Risk factors for hospitalization among adults with asthma: the influence of sociodemographic factors and asthma severity

Risk factor Baseline interview (mean [SD] or n [%]) Risk of hospitalization at 18 months (OR [95% CI])
Age (per 10 years) 40.5 (7.3) 1.0 (0.6–1.7)
Female gender 177 (73%) 1.1 (0.5–2.4)
Non-white race/ethnicity 71 (29%) 2.1 (1.1–4.0)
Education (years) 14.9 (2.5) 0.8 (0.70–0.96)
Household income* 45,000 1.3 (1.1–1.5)
Married or cohabitating 160 (66%) 1.0 (0.5–2.1)
Current cigarette smoking 18 (7%) 2.1 (0.7–6.4)
Past cigarette smoking 87 (36%) 1.3 (0.6–2.6)
  1. Bivariate analysis (n = 242). *Median household income (25th–75th interquartile range, $25,000–$62,500); odds ratio per $10,000 decrement.