Positive and negative predictive values of important risk factors
| National cohort n=140; SD/CA n=27 | ||
| Risk factor | Positive predictive value with (95% CI) | Negative predictive value with (95% CI) |
| Last ECG risk score >5 | 45 (33 to 58) | 99 (93 to 100) |
| Last SEPPER ≥190% | 40 (28 to 54) | 94 (87 to 98) |
| Last Z-score ≥4.5 | 29 (18 to 43) | 99 (93 to 100) |
| nsVT on Holter | 46 (26 to 67) | 94 (86 to 98) |
| ST depression ≥2 mm at rest | 56 (35 to 76) | 86 (79 to 92) |
nsVT, non-sustained ventricular tachycardia; SD/CA, sudden death/cardiac arrest; SEPPER, septum in % of 95th centile for age.