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Table 2 Estimated effect of live poultry market closure in Shanghai, Nanjing and Hangzhou

From: Accuracy of epidemiological inferences based on publicly available information: retrospective comparative analysis of line lists of human cases infected with influenza A(H7N9) in China

Line list

Estimated incidence rate ratio (Pvalue)

 

Shanghai

Nanjing

Hangzhou

China CDC

0.064 (<0.001)

0.014 (0.007)

0.000 (<0.001b)

HealthMapa

0.067 (<0.001)

0.000 (0.034b)

0.007 (<0.001)

Virginia Techa

0.037 (<0.001)

0.017 (0.010b)

0.006 (<0.001)

FluTrackersa

0.061 (<0.001)

0.362 (0.328)

0.004 (<0.001)

  1. aMissing onset dates were imputed based on the empirical onset-to-report distribution from other A(H7N9) cases in Shanghai, Nanjing and Hangzhou. bThere were no cases two days after the market closure in Nanjing and Hangzhou. P values were based on likelihood ratio tests. China CDC, Chinese Center for Disease Control and Prevention.