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Table 4 Univariate and Multivariate logistic regression analysis for risk factors of DHF

From: Clinico-laboratory spectrum of dengue viral infection and risk factors associated with dengue hemorrhagic fever: a retrospective study

Variables Univariate analysis Multivariate analysis
P-value OR 95 % CI P-value OR 95 % CI
Age > 40 years 0.005 2.0 1.23 – 3.31 <0.001 4.1 2.12 – 5.71
Secondary Infection 0.017 2.1 1.15 – 3.90 0.042 2.7 1.64 – 3.91
Diabetes mellitus 0.020 3.9 1.34 – 4.21 0.041 2.8 1.35 – 4.67
Hypertension 0.047 3.7 1.33 – 3.11 0.211 2.3 2.45 – 7.45
Skin rash 0.150 1.8 1.12 – 2.90 0.346 2.6 1.88 – 4.78
Lethargy 0.023 2.2 0.81 – 3.10 0.005 3.1 1.89 – 5.11
Retro-orbital Pain 0.604 1.2 0.68 – 1.93 - - -
Rigors 0.061 1.7 1.03 – 2.79 0.062 2.2 0.98 – 3.78
Thick gallbladder 0.007 6.2 1.63 – 23.67 0.029 1.7 0.78 – 2.12
Delayed hospitalization 0.008 2.7 1.88 – 4.11 0.037 2.3 1.34 – 2.89
  1. Variables with P < 0.25 (retro-orbital pain) were excluded from multivariate analysis
  2. Odds ratio (OR) and Confidence interval (CI) have been rounded off