Table 3

Bivariate and multivariate Cox proportional hazard model fit for different independent variables

VariablesStatusCHR (95% CI)AHR (95% CI)
EventCensored
Age (months)
 ≤12286011
 13–2410190.98(0.47 to 2.12)1.40(0.65 to 3.04)
 25–6026401.30 (0.75 to 2.23)1.15(0.63 to 2.08)
 61–13220431.07(0.60 to 1.90)1.20 (0.65 to 2.21)
 >13218490.92(0.50 to 1.67)1.61(0.84 to 3.08)
Address
 Urban284311
 Rural741680.73 (0.47 to 1.13)0.63 (0.37 to 1.05)
Caregivers’ level of education
 No formal education9619511
 Primary and above6160.78 (0.34 to 1.80)1.26 (0.51 to 3.13)
Caregivers’ occupation
 Farmers7215111
 Merchants and private9230.82 (0.41 to 1.64)1.06 (0.47 to 2.35)
 Government employee7240.50 (0.22 to 1.16)0.35 (0.14 to 0.89)*
 Unemployed14131.61 (0.91 to 2.86)1.11 (0.55 to 2.24)
Day of admission
 Weekday7117011
 Weekend31411.47 (0.96 to 2.26)1.63 (1.02 to 2.60)*
Source of admission
 Home92711
 Other facilities14231.66 (0.72 to 3.86)1.90 (0.76 to 4.76)
 Emergency room551341.13 (0.56 to 2.29)1.59 (0.72 to 3.48)
 Wards and OR24272.11 (0.98 to 4.56)2.07 (0.86 to 4.99)
Duration of illness before PICU admission
 <6 days3910711
 ≥6 days631041.43 (0.96 to 2.12)0.97 (0.62 to 1.54)
Comorbidities
 No8518511
 Yes17261.31(0.78 to 2.21)0.66 (0.36 to 1.23)
Critical illness diagnosis
 No5316011
 Yes49512.05 (1.39 to 3.04)1.79 (1.13 to 2.85)*
Nutritional status, z-score
 Normal4511811
 Moderate acute malnutrition15351.19 (0.66 to 2.14)1.49 (0.79 to 2.82)
 Severe acute malnutrition42581.67 (1.09 to 2.55)1.69 (0.94 to 2.61)
 Modified Pediatric Index of Mortality 2−3.22±1.811.51 (1.37 to 1.67)1.53 (1.36 to 1.72)*
Mechanical ventilation need
 No7919711
 Yes23141.93 (1.20 to 3.10)2.36 (1.39 to 4.01)*
Complications in the PICU
 No8619011
 Yes16212.39 (1.20 to 4.73)1.62 (0.79 to 3.31)
Fluid resuscitation intervention before PICU admission
 No4410511
 Yes581061.24 (0.83 to 1.84)0.92(0.59 to 1.44)
  • *Shows statistical significance at a p value of 0.05.

  • AHR, adjusted HR; CHR, crude HR; PICU, paediatric intensive care unit.