Table 1

Statistical power to detect differences among patients with mild and severe COVID-19

PrevalenceMild COVID-19 outpatient clinic (n=500)Severe COVID-19 intensive care (n=500)Risk ratioStatistical power
Symptom 14.8%9.6%280.4%
Symptom 26.5%12%1.882.5%
Symptom 39.5%16%1.784.9%
Symptom 49.7%16%1.682.3%
Symptom 514%22%1.689.6%