Table 5

Logistic Regression With Antibiotics Always Effective and Antibiotics Always or Usually Effective as Dependent Variables

VariableAntibiotics Always Effective OR (95% CI)Antibiotic Always or Usually Effective OR (95% CI)
Age0.99 (0.98–1.01)1.00 (0.99–1.01)
Married0.66 (0.41–1.07)0.93 (0.62–1.40)
Nonwhite1.82 (1.14–2.94)a2.04 (1.35–3.12)a
Male1.52 (0.96–2.40)1.37 (0.93–2.02)
Some college or less education2.08 (1.26–3.45)a1.45 (0.9 8–2.17)
Income ≥$75,000/y0.90 (0.55–1.48)0.78 (0.52–1.16)
Self-reported asthma or chronic lung disease1.94 (1.00–3.76)1.11 (0.60–2.04)
Any chronic medical condition0.77 (0.47–1.27)0.96 (0.64–1.44)
Self-reported previous antibiotic use for ACI2.20 (1.34–3.55)a2.22 (1.49–3.30)a
  • ACI = acute cough illness; OR = odds ratio.

  • a P <. 0 5.