The accuracy of survival estimates by profession
| Total | N | Patient outcome | Results | ||||||
| Died | Survived | PPV | NPV | Sensitivity | Specificity | c-Statistic | |||
| % (95% CI) | |||||||||
| All estimates | |||||||||
| Nurse | 37 | ||||||||
| Yes* | 15 | 12 | 3 | 80 (52 to 96) | 88 (64 to 99) | 86 (57 to 98) | 83 (59 to 96) | 0.85 (0.72 to 0.98) | |
| No† | 17 | 2 | 15 | ||||||
| Unsure‡ | 5 | 1 | 4 | ||||||
| Doctor | 46 | ||||||||
| Yes* | 27 | 17 | 10 | 63 (42 to 81) | 75 (48 to 93) | 81 (58 to 95) | 56 (32 to 76) | 0.68 (0.54 to 0.81) | |
| No† | 16 | 4 | 12 | ||||||
| Unsure‡ | 3 | 2 | 1 | ||||||
| Patients with an estimate from each profession | 27 | ||||||||
| Nurse | |||||||||
| Yes* | 14 | 11 | 3 | 79 (49 to 95) | 85 (55 to 98) | 85 (55 to 98) | 79 (49 to 95) | 0.82 (0.67 to 0.97) | |
| No† | 13 | 2 | 11 | ||||||
| Doctor | 27 | ||||||||
| Yes* | 15 | 9 | 6 | 60 (32 to 84) | 67 (35 to 90) | 69 (39 to 91) | 57 (29 to 82) | 0.63 (0.44 to 0.82) | |
| No† | 12 | 4 | 8 | ||||||
*Yes, the patient will die within 72 hours.
†No, the patient will not die within 72 hours.
‡Unsure on survival (not included in the analysis of accuracy).
NPV, negative predictive value; PPV, positive predictive value.