Table 1 Estimated diagnostic performances of the infrared thermoscanners in predicting hyperthermia measured by the axillary temperature
From: Fever screening during the influenza (H1N1-2009) pandemic at Narita International Airport, Japan
| Â | Cut-off level of axillary temperature | ||
|---|---|---|---|
All subjects (n = 1,049) | 37.5°C | 38.0°C | 38.5°C |
Positive fraction†| 51.9 (48.8, 54.9) | 37.0 (34.1, 39.9) | 23.5 (21.0, 26.1) |
Sensitivity | 58.3 (54.1, 62.4) | 50.8 (45.8, 55.7) | 70.4 (64.8, 76.1) |
Specificity | 70.5 (66.5, 74.5) | 81.7 (78.7, 84.6) | 63.6 (60.3, 66.9) |
Positive predictive value | 68.0 (64.7, 71.3) | 61.9 (57.5, 66.4) | 37.3 (34.5, 40.2) |
Negative predictive value | 61.1 (58.3, 63.8) | 73.9 (71.8, 75.9) | 87.5 (85.3, 89.7) |
AUCunadj ‡ | 70.5 (67.7, 73.2) | 72.4 (69.6, 75.0) | 73.1 (70.4, 75.7) |
AUCadj ‡ | 74.0 (71.3, 76.6) | 75.2 (72.4, 77.7) | 75.9 (73.2, 78.4) |
Self-reporting (n = 285) | Â | Â | Â |
Positive fraction†| 46.3 (43.3, 49.3) | 46.3 (43.3, 49.3) | 21.4 (18.9, 23.9) |
Sensitivity | 75.8 (68.4, 83.1) | 81.1 (74.4, 87.7) | 73.8 (62.7, 84.8) |
Specificity | 71.9 (64.8, 79.0) | 65.3 (57.7, 72.8) | 78.1 (72.7, 83.5) |
Positive predictive value | 69.9 (64.2, 75.6 | 66.8 (61.7, 72.0) | 47.9 (40.7, 55.1) |
Negative predictive value | 77.5 (71.9, 83.0) | 80.0 (74.0, 85.9) | 91.6 (88.3, 94.9) |
AUCunadj ‡ | 79.5 (74.4, 83.7) | 78.3 (73.1, 82.7) | 82.9 (78.1, 86.8) |
AUCadj ‡ | 78.8 (73.7, 83.1) | 75.0 (69.7, 79.7) | 74.0 (68.6, 78.7) |