Fever and SpO2 | Patients with symptoms, n (n=11 547) | Radiographic pneumonia, n (n=2323) | Sensitivity | Specificity | Positive likelihood ratio (95% CI) | Negative likelihood ratio (95% CI) |
Afebrile (temperature <38°C) | ||||||
SpO2 <95% | 4421 | 870 | 0.37 | 0.62 | 0.97 (0.92 to 1.03) | 1.02 (0.98 to 1.05) |
SpO2 <90% | 1827 | 407 | 0.18 | 0.85 | 1.14 (1.03 to 1.26) | 0.97 (0.95 to 0.99) |
SpO2 <85% | 810 | 192 | 0.08 | 0.93 | 1.23 (1.06 to 1.44) | 0.98 (0.97 to 1.00) |
Febrile (temperature >38°C) | ||||||
SpO2 <95% | 2636 | 666 | 0.29 | 0.79 | 1.34 (1.24 to 1.45) | 0.91 (0.88 to 0.93) |
SpO2 <90% | 1178 | 340 | 0.15 | 0.91 | 1.61 (1.43 to 1.81) | 0.94 (0.92 to 0.96) |
SpO2 <85% | 520 | 170 | 0.07 | 0.96 | 1.93 (1.61 to 2.30) | 0.96 (0.95 to 0.97) |
Bold values are statistically significant.