Hark cut off scores | % of study sample | Sensitivity with 95% C.I. | Specificity with 95% C.I. | Positive predictive value with 95% C.I. | Negative predictive value with 95% C.I. | Likelihood ratio with 95% C.I. | Post-test odds |
---|---|---|---|---|---|---|---|
= 4 | 1% | 4% (3% to 13%) | 100% (98% to 100%) | 100% (22 to 100%) | 78% (72% to 83%) | Undefined | Undefined |
≥3 | 6% | 26% (15% to 40%) | 100% (98% to 100%) | 100% (81% to 100%) | 82% (76% to 87%) | Undefined | Undefined |
≥2 | 13% | 51% (37% to 65%) | 98% (95% to 100%) | 90% (73% to 98%) | 87% (82% to 91%) | 30 (10 to 96) | 9 |
≥1 | 22% | 81% (69% to 90%) | 95% (91% to 98%) | 83% (70% to 91%) | 94% (90% to 97%) | 16 (8 to 31) | 5 |
≥0 | 100% | 100% (93% to 100%) | 0% (0% to 2%) | 23% (18% to 29%) | error | 1 | 0.3 |