Table 1.
Characteristics of study population at enrolment.
| HN001 (N = 193) | Placebo (N = 187) | |
|---|---|---|
| Previous pregnancy | ||
| 0 | 66 (34.2%) | 52 (27.8%) |
| 1 | 46 (23.8%) | 68 (36.4%) |
| 2 | 43 (22.3%) | 40 (21.4%) |
| 3 | 24 (12.4%) | 11 (5.9%) |
| > 3 | 14 (7.3%) | 16 (8.6%) |
| Age (years), mean (SD) | 33.5 (4.24) | 33.7 (4.44) |
| Weight (kg), median (interquartile range) | 69.2 (63.1–79.1) | 71 (63.5–81.7) |
| BMI, median (interquartile range) | 25.1 (23.0–28.6) | 25.9 (23.0–29.5) |
| Parental allergies | ||
| Mother only | 70 (36.3%) | 64 (34.2%) |
| Father only | 26 (13.5%) | 28 (15.0%) |
| Both | 97 (50.3%) | 95 (50.8%) |
| Ethnicity | ||
| Maori | 20 (10.4%) | 29 (15.5%) |
| Pacific | 5 (2.6%) | 3 (1.6%) |
| Asian | 13 (6.7%) | 14 (7.5%) |
| European | 155 (80.3%) | 140 (74.9%) |
| Other | 0 (0.0%) | 1 (0.5%) |
| Household income ($NZ) | ||
| 0–49k | 15 (7.8%) | 10 (5.4%) |
| 50–99k | 59 (30.6%) | 63 (33.7%) |
| 100–149k | 69 (35.8%) | 66 (35.3%) |
| 150 + k | 50 (25.9%) | 48 (25.7%) |
| Maternal smoking | 42 (21.8%) | 36 (19.3%) |
| Maternal education | ||
| School education | 23 (11.9%) | 25 (13.4%) |
| Post school education | 26 (13.5%) | 17 (9.1%) |
| University education | 144 (74.6%) | 145 (77.5%) |
| Medication for psychological problem ever taken prior to index pregnancy | ||
| Yes | 41 (21.2%) | 36 (19.3%) |
| No | 152 (78.8%) | 151 (80.7%) |
| Maternal antibiotics from enrolment (14–16 weeks gestation) to birth | ||
| Yes | 57 (30.3%) | 58 (31.2%) |
| No | 131 (69.7%) | 128 (68.8%) |
| Maternal antibiotics from birth to 3 months postpartum | ||
| Yes | 64 (33.2%) | 72 (38.5%) |
| No | 129 (66.8%) | 115 (61.5%) |