Time horizon | Training cohort (n = 2,336) | Testing cohort (n = 2,371) | ||
---|---|---|---|---|
Value (%) | 95% CI1 | Value (%) | 95% CI1 | |
7 days | ||||
Sensitivity | 63.9 | [60.4–67.4] | 57.6 | [53.7–61.5] |
Specificity | 55.3 | [52.8–57.8] | 54.1 | [51.8–56.4] |
Positive predictive value | 74.2a | [71.5–76.9] | 76.9 | [74.4–79.4] |
Negative predictive value | 43.1 | [40.3–45.9] | 32.5 | [29.7–35.3] |
14 days | ||||
Sensitivity | 61.8 | [58.9–64.7] | 55.4 | [52.4–58.4] |
Specificity | 61.3 | [58.1–64.5] | 57.3 | [54.5–60.1] |
Positive predictive value | 57.3 | [54.2–60.4] | 58.7 | [55.8–61.6] |
Negative predictive value | 65.6 | [62.6–68.6] | 54.0 | [51.0–57.0] |
28 days | ||||
Sensitivity | 59.9 | [57.2–62.6] | 55.6 | [52.8–58.4] |
Specificity | 69.5 | [66.3–72.7] | 64.4 | [61.7–67.1] |
Positive predictive value | 42.2 | [39.0–45.4] | 44.6 | [41.5–47.7] |
Negative predictive value | 82.4 | [80.0–84.8] | 73.7 | [70.9–76.5] |