Table 4.
Risk of atopic diseases in a sample of 29,183 Danish adolescent and young adult twins
| Asthma | Hay fever | Atopic dermatitis | |
|---|---|---|---|
| MZ twins | |||
| Asthma | 20.69 (15.08–28.38) | ||
| Hay fever | 4.30 (3.20–5.56) | 14.28 (11.40–17.90) | |
| Atopic dermatitis | 3.81 (2.72–5.32) | 2.87 (2.17–3.78) | 32.98 (24.66–44.11) |
| DZ twins | |||
| Asthma | 4.24 (2.97–6.06) | ||
| Hay fever | 2.00 (1.46–2.73) | 3.10 (2.49–3.85) | |
| Atopic dermatitis | 1.73 (1.16–2.58) | 1.40 (1.02–1.93) | 5.63 (4.20–7.56) |
Odds ratios (95% confidence intervals) denote the risk of an atopic disease in a co-twin of an affected twin relative to a co-twin of an unaffected twin. Rows are diseases in the index twin and columns are diseases in the co-twin. Modified from [IV].