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Prevalence of right ventricular hypertrophy by different ECG criteria at the time of PAH diagnosis and before death.
| ECG at PAH diagnosis n (%) | ECG before death n (%) | P (Fisher exact test) | |
|---|---|---|---|
| n | 39 | 50 | |
| Butler et al.22 | 33 (85) | 50 (100) | 0.006 |
| Heikkilä et al. 12,23 | 28 (72) | 44 (88) | 0.06 |
| Lehtonen et al.12 | 34 (87) | 50 (100) | 0.01 |
| Louridas et al.24 | 33 (85) | 43 (86) | 1 |
| WHO25 | 33 (85) | 44 (88) | 0.76 |
Abbreviations: WHO: World Health Organization.
