Table 2 Demographics of the New Zealand Asthma and Allergy Cohort
From: The New Zealand Asthma and Allergy Cohort Study (NZA2CS): Assembly, Demographics and Investigations
Christchurch | Wellington | Total | |
|---|---|---|---|
Total number of children recruited | 552 | 553 | 1105 |
Total number with 3 month questionnaire data | 535 (96.9%) | 529 (95.7%) | 1064 (96.3%) |
Total number with 15 month questionnaire data | 505 (91.4%) | 506 (91.5%) | 1011 (91.4%) |
Male:Female (ratio %) | 283:269 (51.3:48.7) | 278:275 (50.3:49.7) | 561:544 (50.8:49.2) |
First born | 41.3% | 50.5% | 45.9% |
Second born | 37.0% | 34.0% | 35.5% |
Third + born | 21.7% | 15.6% | 18.6% |
Number of multiple births | 10 | 2 | 12 |
Gestation: Mean (range) | 39.6 (33.0–43.0) | 39.6 (32.0–43.0) | 39.6 (32.0–43.0) |
Maternal age at birth: Mean (range) | 29.9 (16.3–46.7) | 30.3 (15.5–45.6) | 30.1 (15.5–46.7) |
Percentage Maori Children† * | 11.6% | 18.9% | 15.2% |
Percentage with Maori Mother * | 5.6% | 9.4% | 7.5% |
Family history† § n = 1046 | 85.2% | 82.9% | 84.0% |
Smoking during pregnancy † | 21.1% | 20.8% | 21.0% |
Household smoking † | 33.6% | 31.8% | 32.7% |
Cord blood obtained | 91.7% | 87.5% | 89.6% |