Rate of subsequent atopy in individuals exposed to more than one independant variable
| Risk factors for atopy | % atopic (n) |
|---|---|
| None of maternal atopy, pertussis immunisation or antibiotics <2 years | 22 (34/154) |
| Maternal atopy alone | 32 (7/22) |
| Pertussis immunisation alone | 29 (106/368) |
| Antibiotics <2 years alone | 39 (100/254) |
| Maternal atopy and pertussis immunisation | 39 (29/74) |
| Maternal atopy and antibiotics <2 years | 54 (36/67) |
| Pertussis immunisation and antibiotics <2 years | 51 (372/731) |
| Maternal atopy, pertussis immunisation and antibiotics <2 years | 67 (124/184) |