Table 5.

Final Adjusted Model* for the Likelihood of Antibiotic Prescription

Sign/SymptomEstimate (β coefficient)aOR (95% CI)
PCR guided care−0.310.61 (0.40–0.94)
Tonsil exudate1.635.10 (2.14–12.1)
Pharynx erythema0.962.60 (1.73–3.93)
Pharynx exudate1.785.94 (2.56–13.8)
Duration of symptoms (≤2 days vs >2 days)−0.730.48 (0.33–0.71)
Sore throat0.601.83 (0.63–5.26)
Enlarged tonsils0.892.43 (1.42–4.16)
Unclear lungs0.792.21 (1.26–3.88)
Nasal discharge−0.650.52 (0.31–0.87)
Clinic 20.091.10 (0.70–1.73)
Clinic 3−0.440.64 (0.39–0.05)
Intercept−1.99————
  • * Hosmer-Lemeshow χ2 statistic, 6.32; df = 8; P = .61; AUROCC, 0.79.

  • Unadjusted OR, 0.71 (0.48–1.04).

  • aOR, adjusted odds ratio; CI, confidential interval; PCR, polymerase chain reaction.