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Table 1 Demographics of all participants, cases, controls and mono-infection cases

From: Erratum To: Respiratory viral pathogens among Singapore military servicemen 2009 – 2012: epidemiology and clinical characteristics

Characteristics All (Count,%) Cases (Count,%) Controls (Count,%) Mono-infection (Count,%) p-value†
Age (Mean, SD) 20.8 (3.1) 20.7 (3.1) 21.1 (2.9) 20.7 (3.2) 0.781
Male 9055 (99.8) 7713 (99.7) 1342 (99.9) 3422 (99.8) 0.902
Current Smoker 2475 (27.3) 2090 (27.0) 385 (28.6) 887(25.9) 0.220
Recruit 6048 (66.6) 5568 (72.0) 480 (35.7) 2495 (72.7) <0.001
Asthma 1833 (20.2) 1597 (20.7) 236 (17.6) 721 (21.0) 0.051
Heart Disease 102 (1.1) 83 (1.1) 19 (1.4) 37 (1.1) 0.748
Total 9077 (100.0) 7733 (100.0) 1344 (100.0) 3430 (100.0) -
  1. † By ANOVA test, comparing mean age, and by Pearson’s chi-square test, comparing proportions across all categories.