Table 2.
Univariable and multivariable odds ratios (OR) and 95% confidence intervals (CI) for the association between maternal cat ownership in pregnancy and between the ages of 8 months and 4 years of the child and psychotic symptoms (suspected or definite v. none) at ages 13 and 18 years (N includes exposure and confounding variables imputed with multiple imputation with chained equations, N = 100 imputations)
| Psychotic experiences age 13 (suspected or definite v. none) N = 6705 | ||
|---|---|---|
| Crude OR (95% CI) | Adjusted OR a (95% CI) | |
| Exposure variable | ||
| Cat ownership in pregnancy | ||
| No | Ref. | Ref. |
| Yes | 1.15 (0.97–1.35) | 1.15 (0.97–1.36) |
| Cat ownership at age 4 | ||
| No | Ref. | Ref. |
| Yes | 1.23 (1.04–1.46)** | 1.18 (0.94–1.48) |
| Cat ownership at age 10 | ||
| No | Ref. | Ref. |
| Yes | 1.19 (1.00–1.41)** | 1.12 (0.92–1.36) |
**
p < 0.05.
a
Model of cat ownership in pregnancy is adjusted for child ethnicity; maternal education, marital status, and social class; paternal age; number of house moves until age 4, type of house, crowding index. Models of cat ownership in at ages 4 and 10 years are further adjusted for cat ownership in pregnancy.