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Table 2 Risk factors associated with admission of COVID-19 patients to ICU

From: The first consecutive 5000 patients with Coronavirus Disease 2019 from Qatar; a nation-wide cohort study

Variable Univariable OR (95% CI, P value) Multivariable OR (95% CI, P value)
Age (per year increase) 1.056 (1.041–1.071, P < 0.001) 1.041 (1.022–1.061, P < 0.001)
Male sex (versus female) 2.741 (1.316–5.711, P 0.007) 4.375 (1.964–9.744, P < 0.001)
Co-morbidity present (versus not present)
 Diabetes mellitus 3.461 (2.319–5.164,P < 0.001) 1.698 (1.050–2.746, P 0.031)
 Hypertension 2.919 (1.941–4.340, P < 0.001) 0.980 (0.589–1.630, P 0.937)
 Coronary artery disease 4.180 (1.991–8.778, P < 0.001) 1.090 (0.449–2.643, P 0.849)
 Chronic lung disease 1.717 (0.859–3.430, P 0.126) ..
 Chronic liver disease 3.536 (1.143–10.934, P 0.028) 2.463 (0.716–8.465, P 0.153)
 Chronic kidney disease 8.341 (4.050–17.177, P < 0.001) 3.590 (1.596–8.079, P 0.002)
BMI (per one kg/m2 increase) 1.067 (1.033–1.102, P < 0.001) 1.067 (1.027–1.108, P 0.001)
Presenting symptoms (versus not present)
 Fever 28.542 (9.011–90.401, P < 0.001)  
 Cough 6.145 (3.339–11.312, P < 0.001)  
 Dyspnea 7.879 (5.123–11.909, P < 0.001)  
 Sore throat 0.660 (0.403–1.079, P < 0.001)  
 Rhinorrhea 0.833 (0.0115–0.602, P 0.014)  
Baseline vital signa (per unit increase)
 Systolic blood pressure (mmHg) 0.987 (0.973–1.001, P 0.062)  
 Heart rate (beats per minute) 1.037 (1.024–1.049, P < 0.001)  
 Respiratory rate (breaths per minute) 1.264 (1.217–1.313, P < 0.001)  
 Oxygen saturation (%) 0.651 (0.605–0.701, P < 0.001)  
Baseline laboratory results (per unit increase)
 Lymphocytes count (× 109 per L) 0.155 (0.100–0.240, P < 0.001)  
 Platelet count (× 109 per L) 0.993 (0.990–0.996, P < 0.001)  
 Serum sodium (mmol/L) 0.801 (0.757–0.848, P < 0.001)  
 Serum creatinine (μmol/L) 1.003 (1.001–1.005, P < 0.005)  
 CRP (mg/L) 1.016 (1.013–1.019, P < 0.001)  
 ALT (U/L) 1.001 (0.999–1.002, P 0.2)  
  1. ALT Alanine transaminase; BMI Body mass index (calculated as weight in kilograms divided by height in meters squared); CI Confidence interval; COVID-19 Coronavirus disease 2019; CRP C-reactive protein; ICU Intensive care unit; IQR Interquartile range.; OR Odds ratio