Subgroup Numbers of patients True positives False negatives False positives True negatives Sensitivity Specificity
No. No. No. No. No. Percent (95%CI) Percent (95% CI)
Patient population
Full study cohort 3’658 168 27 62 3’401 86.2 (80.5, 90.7) 98.2 (97.7, 98.6)
Inpatients 1’085 80 14 15 976 85.1 (76.3, 91.6) 98.5 (97.5, 99.2)
Outpatients* 2’573 88 13 47 2’438 87.1 (79.0, 93.0) 98.1 (97.5, 98.6)
Gender
Male 1’147 81 6 18 1’042 93.1 (85.6, 97.4) 98.3 (97.3, 99.0)
Female 2’478 87 21 43 2’348 80.6 (71.8, 87.5) 98.2 (97.6, 98.7)
Age s
< 50 years 2’201 89 17 42 2’070 84.0 (75.6, 90.4) 98.0 (97.3, 98.6)
> 50 years 1’457 79 10 20 1’348 88.8 (80.3, 94.5) 98.5 (97.8, 99.1)
Symptoms
Any symptom 1’985 143 25 39 1’751 85.1 (78.8, 90.1) 97.8 (97.0, 98.5)
No symptoms 2’473 88 13 47 2’425 87.1 (79.0, 93.0) 98.1 (97.5, 98.6)
Days since PCR
≥ 28 3’116 96 14 55 2’951 87.3 (79.6, 92.9) 98.2 (97.6, 98.6)
≥ 21 3’205 107 15 56 3’027 87.7 (80.5, 93.0) 98.2 (97.7, 98.6)
≥ 14 3’304 128 15 57 3’104 89.5 (83.3, 94.0) 98.2 (97.7, 98.6)