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Volume 12, Number 1—January 2006
Research

Influenza-associated Deaths in Tropical Singapore

Angela Chow*Comments to Author , Stefan Ma*, Ai Ee Ling†, and Suok Kai Chew*
Author affiliations: *Ministry of Health, Singapore; †Singapore General Hospital, Singapore

Main Article

Table 4

Association between influenza A virus subtypes and 3 death outcomes*

Model 6 mortality outcome Adjusted risk ratio (95% CI), p value†
Influenza A (H1N1) Influenza A (H3N2) Influenza B RSV
All-cause deaths 1.00 (0.96–1.04), 0.928 1.01 (1.00–1.02), 0.178 1.00 (0.97–1.00), 0.824
1.04 (1.02–1.05), 0.000 1.01 (1.00–1.02), 0.008 1.00 (1.00–1.01), 0.484
Underlying P&I deaths 1.00 (0.88–1.13), 0.993 0.99 (0.96–1.02), 0.409 1.01 (0.99–1.02), 0.369
1.08 (1.04–1.12), 0.000 1.00 (0.97–1.03), 0.878 1.01 (1.00–1.02), 0.099
Underlying C&R deaths 1.01 (0.95–1.08), 0.771 1.01 (0.99–1.02), 0.343 1.00 (0.99–1.01), 0.626
1.05 (1.04–1.07), 0.000 1.01 (1.00–1.03), 0.037 1.00 (1.00–1.01), 0.166

*CI, confidence interval; RSV, respiratory syncytial virus; P&I, pneumonia and influenza; C&R, circulatory and respiratory.
†Risk ratio estimates (95% confidence intervals) of each death category were adjusted for number of days in each month, linear and squared time trends, seasonal patterns, temperature, and relative humidity; –, risk factor was not included in the model.

Main Article

Page created: February 16, 2012
Page updated: February 16, 2012
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