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Table 2 The multivariable Cox proportional hazard regression model for mortality and hospital discharge

From: Absolute mortality risk assessment of COVID-19 patients: the Khorshid COVID Cohort (KCC) study

Parameter Category Death Hazard Ratio Discharge Hazard Ratio
Sex
  Female, ref - -
  Male 1.52
[0.77–2.99]
0.93
[0.78–1.11]
Age (years)
   < 45, ref - -
  45–54 1.02
[0.14–7.33]
0.82
[0.64–1.05]
  55–64 1.81
[0.36–9.07]
0.93
[0.73–1.19]
  65–74 3.84
[0.78–18.87]
0.77
[0.57–1.04]
   > 74 2.74
[0.51–14.80]
0.73
[0.50–1.05]
Oxygen Saturation (%)
  90–100, ref - -
  80–89 3.19
[1.33–7.65]
0.57
[0.47–0.69]
   < 80 5.48
[2.18–13.78]
0.38
[0.27–0.53]
CCI
  0–2, ref - -
   ≥ 3 2.10
[0.90–4.86]
0.80
[0.61–1.05]
Hypertension   1.14
[0.55–2.37]
0.92
[0.75–1.12]
  1. CCI Charlson Comorbidity Index