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Table 2 Multivariable predicators of a diagnosis of A(H7N9) infection and associated risk scoring system for step 1

From: A clinical prediction rule for diagnosing human infections with avian influenza A(H7N9) in a hospital emergency department setting

Characteristic βregression coefficient (95%CI) Risk score assigned
Sex
Female Reference 0
Male 0.821 (0.217, 1.425) 10
History of poultry exposure
Yes 4.259 (3.606, 4.913) 52
No Reference 0
Presence of symptoms on presentation
Hemoptysis 1.537 (0.701, 2.372) 19
Shortness of breath 1.961 (1.383, 2.539) 24
Fever 2.624 (1.747, 3.501) 32
  1. Hosmer-Lemeshow statistic, 2.11 (P = 0.98). Cutoff threshold for total point score (with a prespecified sensitivity of 0.95): ≥43 indicates high-risk groups; <43 indicates low-risk group. CI, confidence interval.