Temperature ≥ 100.4 °Fa same day as specimen collection | Temperature ≥ 99.7°Fb same day as specimen collection | Temperature ≥ 98.7°Fc same day as specimen collection | Temperature ≥ 99.7 °F same day or any of 3 days prior to specimen collection | Self-report fever symptoms (i.e., feeling feverish) same day as specimen collection | Self-report COVID-19 symptoms, including feverd same day as specimen collection | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Number of PCR positive results with relevant data recorded (out of 60 total) | 36 | 36 | 36 | 37 | 42 | 42 | ||||||
Number of PCR negative results with relevant data recorded (out of 7612 total) | 4294 | 4294 | 4294 | 4487 | 5415 | 5415 | ||||||
Number of people with PCR positive results who would have been identified through this indicator | 0 / 36 | 3 / 36 | 11 / 36 | 4 / 37 | 8 / 42 | 17 / 42 | ||||||
Number of people with PCR negative results who would have been “flagged” per this indicator | 4 / 4294 | 11 / 4294 | 300 / 4294 | 25 / 4487 | 17 / 5415 | 254 / 5415 | ||||||
pt. est. | (95% CI) | pt. est. | (95% CI) | pt. est. | (95% CI) | pt. est. | (95% CI) | pt. est. | (95% CI) | pt. est. | (95% CI) | |
Sensitivity | 0.0% | (0.0–9.7%) | 8.3% | (1.8–22.5%) | 30.6% | (16.3–48.1%) | 10.8% | (3.0–25.4%) | 19.0% | (8.6–34.1%) | 40.5% | (25.6–56.7%) |
Specificity | 99.9% | (99.8–100%) | 99.7% | (99.5–99.9%) | 93.0% | (92.2–93.8%) | 99.4% | (99.2–99.6%) | 99.7% | (99.5–99.8%) | 95.3% | (94.7–95.9%) |
PPVe | 0.0% | (0.0–59.4%) | 21.4% | (7.4–48.6%) | 3.5% | (2.2–5.8%) | 13.8% | (5.6–30.6%) | 32.0% | (17.8–50.9%) | 6.3% | (4.4–9.0%) |
NPVf | 99.2% | (99.1–99.3%) | 99.2% | (99.1–99.3%) | 99.4% | (99.2–99.5%) | 99.3% | (99.2–99.3%) | 99.4% | (99.3–99.5%) | 99.5% | (99.4–99.6%) |
Fisher’s Exact testg p-value | – | 0.0002 | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 |