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Relative risk of rheumatic heart disease for siblings and parents compared to New Zealand children and adults.
| Relative risk (95% confidence interval) | p value | ||
|---|---|---|---|
| All RHD | 2.52 (1.43–4.44) | 0.001 | |
| Siblings | Definite RHD | 2.05 (0.64–6.54) | 0.226 |
| Borderline RHD | 2.73 (1.41–5.30) | 0.003 | |
| Parents | Definite RHD | 1.94 (0.62–6.05) | 0.255 |
