Characteristics | DNA methylation levels at the PRF1 enhancer | |||||
---|---|---|---|---|---|---|
 | CpG E1 |  | CpG E2 |  | ||
 | n | median (p25, p75) or Spearman’s coefficient | p-value* | n | median (p25, p75) or Spearman’s coefficient | p-value* |
Age at hospitalisation (years) | 38 | −014 | 0.42 | 38 | −016 | 0.33 |
Age at blood sampling | 43 | 0.08 | 0.61 | 43 | 0.10 | 0.54 |
Gender | Â | Â | 0.79 | Â | Â | 0.30 |
Female | 15 | 68.0 (62.5, 73.5) | Â | 15 | 67.0 (63.0, 70.0) | Â |
Male | 28 | 69.5 (61.0, 74.5) | Â | 28 | 64.8 (59.3, 70.0) | Â |
Gestational age | Â | Â | 0.32 | Â | Â | 0.98 |
≥37 weeks | 30 | 68.3 (63.0, 73.5) |  | 30 | 64.8 (62.0, 68.5) |  |
<37Â weeks | 7 | 62.0 (36.0, 73.5) | Â | 7 | 65.5 (36.0, 72.0) | Â |
Sibling status | Â | Â | 0.62 | Â | Â | 0.57 |
None | 2 | 55.3 (36.0, 74.5) | Â | 2 | 53.0 36.0, 70.0) | Â |
≥1 | 33 | 69.5 (63.0, 74.5) |  | 33 | 65.5 (63.0, 71.5) |  |
Smoking in the household | Â | Â | 0.08 | Â | Â | 0.14 |
No | 19 | 72.0 (66.0, 74.0) | Â | 19 | 67.0 (63.5, 72.0) | Â |
Yes | 21 | 65.5 (61.0, 70.0) | Â | 21 | 64.0 (61.5, 68.5) | Â |
Previous wheeze | Â | Â | 0.04 | Â | Â | 0.13 |
No | 36 | 69.5 (63.8, 74.5) | Â | 36 | 65.5 (62.5, 71.0) | Â |
Yes | 4 | 62.3 (43.5, 64.3) | Â | 4 | 63.3 (42.0, 64.5) | Â |
Parent allergic disease | Â | Â | 0.50 | Â | Â | 0.23 |
No | 20 | 69.5 (63.0, 75.0) | Â | 20 | 67.0 (63.5, 71.8) | Â |
Yes | 20 | 68.8 (62.3, 72.8) | Â | 20 | 64.0 (61.8, 69.3) | Â |
Paternal asthma | Â | Â | 0.07 | Â | Â | 0.19 |
No | 37 | 69.5 (63.0, 74.5) | Â | 37 | 65.0 (63.0, 70.5) | Â |
Yes | 3 | 62.0 (25.0, 66.0) | Â | 3 | 63.5 (21.0, 65.5) | Â |
Maternal asthma | Â | Â | 0.32 | Â | Â | 0.04 |
No | 37 | 69.5 (63.0, 74.5) | Â | 37 | 65.5 (63.0, 70.5) | Â |
Yes | 3 | 66.0 (25.0, 70.0) | Â | 3 | 61.5 (21.0, 63.5) | Â |
Days of oxygen supplementation | 40 | −0.05 | 0.74 | 40 | −0.11 | 0.51 |
Antibiotic therapy | Â | Â | 0.62 | Â | Â | 0.65 |
No | 12 | 69.5 (46.8, 74.5) | Â | 12 | 65.0 (46.5, 71.8) | Â |
Yes | 28 | 69.5 (63.8, 74.0) | Â | 28 | 65.0 (63.5, 69.5) | Â |
Corticosteroid therapy | Â | Â | 0.38 | Â | Â | 0.32 |
No | 28 | 67.8 (61.8, 74.0) | Â | 28 | 64.8 (61.5, 70.3) | Â |
Yes | 12 | 71.3 (65.0, 74.0) | Â | 12 | 66.5 (64.0, 71.0) | Â |