From: Completeness and accuracy of crash outcome data in a cohort of cyclists: a validation study
 | Agreement N (%) | Disagreement N (%) | % Total agreement | Kappa (95% CI) | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) | ||
---|---|---|---|---|---|---|---|---|---|---|
Both yes | Both no | SR yes LD no | SR no LD yes | |||||||
All crashes | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
At least one crash claimed to ACC | 114 (7.8) | 1201 (82.5) | 59 (4.1) | 82 (5.6) | 90.3 | 0.56 (0.50, 0.63) | 65.9 (58.3, 72.8) | 93.6 (92.1, 94.9) | 58.2 (50.9, 65.1) | 95.3 (94.0, 96.4) |
At least one crash requiring overnight hospital admission | 10 (0.7) | 1415 (97.8) | 18 (1.3) | 12 (0.2) | 98.5 | 0.47 (0.28, 0.66) | 34.5 (18.6, 54.3) | 99.8 (99.3, 100.0) | 76.9 (50.0, 93.8) | 98.7 (97.9, 99.2) |
At least one crash requiring attention | 118 (8.1) | 1187 (81.5) | 69 (4.7) | 82 (5.6) | 89.6 | 0.55 (0.49, 0.61) | 63.1 (55.7, 69.9) | 93.5 (92.0, 94.8) | 59.0 (51.8, 65.8) | 94.5 (93.1, 95.7) |
Collisions with a motor vehicle | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
At least one collision claimed to ACC | 20 (1.4) | 1412 (97.0) | 21 (1.4) | 3 (0.2) | 98.4 | 0.62 (0.48, 0.76) | 48.8 (33.2, 64.6) | 99.8 (99.3, 100.0) | 87.0 (65.3, 96.6) | 98.5 (97.7, 99.1) |
At least one collision requiring overnight hospital admission | 2 (0.1) | 1443 (99.1) | 8 (0.6) | 3 (0.2) | 99.3 | 0.26 (−0.03, 0.56) | 20.0 (3.5, 55.8) | 99.8 (99.3, 100.0) | 40.0 (7.3, 83.0) | 99.5 (99.0, 99.7) |
At least one collision reported to police | 10 (0.7) | 1412 (97.0) | 34 (2.3) | 0 (0.0) | 97.7 | 0.36 (0.20, 0.53) | 22.7 (12.0, 38.2) | 100.0 (99.7, 100.0) | 100.0 (65.6, 100.0) | 97.7 (96.7, 98.3) |
At least one collision requiring attention | 22 (1.5) | 1399 (96.1) | 33 (2.3) | 2 (0.1) | 97.6 | 0.55 (0.41, 0.68) | 40.0 (27.3, 54.1) | 99.9 (99.4, 100.0) | 91.7 (71.5, 98.5) | 97.7 (96.7, 98.4) |