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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