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Sample description of the 47 twin pairs analysed
| Monozygotic twin pairs | Dizygotic twin pairs | |||||
| No of pairs | Concordant 15 | Discordant 5 | Total 20 | Concordant 3 | Discordant 24 | Total 27 |
| Probandwise concordance | 85.7 | 20.0 | ||||
| (95% CI) | (73.3–98.1) | (0.8–39.2) | ||||
| Pairwise concordance | 75.0 | 11.1 | ||||
| (95% CI) | (62.0–94.0) | (9.9–23.0) | ||||
95% CI, 95% confidence interval.
