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Table 2 Independent risk factors for intensive care unit admission or all-cause mortality

From: Age, sex, and comorbidities predict ICU admission or mortality in cases with SARS-CoV2 infection: a population-based cohort study

Risk factors
 Characteristic Unadjusted OR (95%CI) Adjusted OR (95%CI) P
  Age (years) 1.071 (1.066–1.076) 1.065 (1.059–1.071) < 0.001
  Sex (male) 1.755 (1.506–2.046) 1.896 (1.608–2.236) < 0.001
  Number of comorbidities    < 0.001
   None    
   1 6.063 (5.076–7.242) 2.953 (2.450–3.560) < 0.001
   2 10.677 (8.389–13.589) 3.568 (2.768–4.599) < 0.001
   ≥ 3 21.004 (14.960–29.491) 6.002 (4.206–8.566) < 0.001
Examples of predicted probabilities
 Age (years) 20 40 60 80
 Sex Male Female Male Female Male Female Male Female
 Number of comorbidities
  0 0.002 0.001 0.007 0.004 0.025 0.014 0.083 0.046
  1 0.006 0.003 0.021 0.011 0.071 0.039 0.211 0.124
  2 0.007 0.004 0.026 0.014 0.084 0.046 0.244 0.146
  ≥ 3 0.012 0.007 0.042 0.023 0.134 0.075 0.351 0.222
  1. OR risk ratio, 95%CI 95% confidence interval, ICU intensive care unit
  2. Model: n total = 18,647, n events of ICU admission or all-cause mortality = 687; c-statistic of 0.876 (95%CI 0.866–0.887); Brier score of 0.0322
  3. Probability of intensive care unit admission or all-cause mortality = ey/(ey + 1)
  4. y = − 8.053 + 0.0627*Age (years) + 0.6374*Sex (male as one or female as zero) + A or B or C (A = 1.0786 if one comorbidity; B = 1.2668 if 2 comorbidities; C = 1.7847 if ≥ 3 comorbidities)