Table 2.
Frequencies of the mtDNA haplogroups and haplogroup clusters in victims of non-ischaemic sudden cardiac death (N = 78) and in population controls (N = 537)
| Haplogroup | SCD | SCD % | Cluster % | Controls | Controls % | Cluster % | OR (CI 95%) |
|---|---|---|---|---|---|---|---|
| H | 15 | 19.2 | 56.4 | 119 | 22.2 | 44.7 | 0.84 (0.45–1.52) |
| H1 | 21 | 26.9 | 93 | 17.3 | 1.76* (1.02–3.04) | ||
| V | 8 | 10.3 | 28 | 5.2 | 2.08 (0.91–4.74) | ||
| U5 | 19 | 24.4 | 32.1 | 144 | 26.8 | 33.3 | 0.88 (0.51–1.53) |
| U | 4 | 5.1 | 16 | 3.0 | 1.76 (0.57–5.41) | ||
| K | 2 | 2.6 | 19 | 3.5 | 0.72 (0.16–3.14) | ||
| J | 3 | 3.8 | 5.1 | 26 | 4.8 | 10.8 | 0.79 (0.23–2.66) |
| T | 1 | 1.3 | 32 | 6.0 | 0.21 (0.03–1.52) | ||
| W | 5 | 6.4 | 6.4 | 29 | 5.4 | 9.0 | 1.20 (0.45–3.20) |
| I | 9 | 1.7 | |||||
| X | 10 | 1.9 | |||||
| Other | 12 | 2.2 | 2.2 |
*p < 0.05
CI confidence interval, OR odds ratio