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Table 3 Univariable and multivariable logistic regression analyses of factors associated with hospitalization among ILI patients in Bali

From: Surveillance and characterisation of influenza viruses among patients with influenza-like illness in Bali, Indonesia, July 2010–June 2014

  Univariable association with hospitalization Multivariable association with hospitalization
Crude OR 95% CI P Adjusted OR 95% CI P
Age group (y) (ref: 0–4)
 5–14 0.27 (0.17,0.44) < 0.0001 0.25 (0.15,0.41) < 0.0001
 15–24 0.09 (0.03,0.26)   0.09 (0.03,0.24)  
 25–34 0.06 (0.02,0.25)   0.06 (0.01,0.24)  
 35–44 0.10 (0.03,0.33)   0.10 (0.03,0.34)  
 45–64 0.16 (0.06,0.40)   0.16 (0.06,0.39)  
 65+ 0.30 (0.07,1.26)   0.25 (0.06,1.11)  
Male sex 1.41 (1.00,2.00) 0.05 1.30 (0.90,1.88) 0.17
Pre-existing chronic respiratory condition 4.34 (2.20,8.57) < 0.0001 5.55 (2.61,11.81) < 0.0001
Influenza diagnosis (ref: Negative)
 B 0.35 (0.13,0.96) < 0.0001 0.45 (0.16,1.25) 0.0003
 A/H3N2 0.61 (0.29,1.27)   0.68 (0.32,1.43)  
 A/H1N1-pdm09 1.28 (0.58,2.86)   1.71 (0.73,3.99)  
 A/Unsubtyped 2.50 (1.02,6.15)   3.4 (1.28,9.02)  
  1. OR, Odds Ratio. (Adjusted OR values are based on multivariable logistic regression adjusting for all other variables in the table);
  2. CI, confidence interval
  3. Data in bold are statistically significant