Table 8.
Multivariable binary logistic regression model of bird ownership at 7 years.
| Variable | Univariable result (unadjusted) | Final adjusted model | ||||
|---|---|---|---|---|---|---|
| OR | 95%CI | P | OR | 95%CI | P | |
| Dog | ||||||
| No | 1 | 1 | ||||
| Yes | 2.78 | 2.32–3.32 | <0.001 | 2.18 | 1.75–2.72 | <0.001 |
| Rabbit | ||||||
| No | 1 | 1 | ||||
| Yes | 1.91 | 1.56–2.35 | <0.001 | 1.56 | 1.22–2.00 | <0.001 |
| Rodent | ||||||
| No | 1 | 1 | ||||
| Yes | 1.86 | 1.55–2.23 | <0.001 | 1.62 | 1.30–2.03 | <0.001 |
| Fish | ||||||
| No | 1 | 1 | ||||
| Yes | 1.80 | 1.50–2.17 | <0.001 | 1.46 | 1.17–1.83 | 0.001 |
| Other pet | ||||||
| No | 1 | 1 | ||||
| Yes | 2.35 | 1.80–3.06 | <0.001 | 1.84 | 1.34–2.53 | <0.001 |
| Older sibling at 18 months | ||||||
| No | 1 | 1 | ||||
| Yes | 1.83 | 1.51–2.22 | <0.001 | 1.34 | 1.08–1.67 | 0.01 |
| Maternal education | ||||||
| CSE/None | 1 | <0.001 | 1 | <0.001 | ||
| Vocational | 0.72 | 0.53–1.00 | 0.05 | 0.92 | 0.62–1.37 | 0.68 |
| O Level | 0.55 | 0.43–0.69 | <0.001 | 0.73 | 0.54–0.99 | 0.05 |
| A Level | 0.37 | 0.28–0.49 | <0.001 | 0.50 | 0.35–0.72 | <0.001 |
| Degree | 0.24 | 0.16–0.34 | <0.001 | 0.39 | 0.24–0.65 | <0.001 |
| Maternal social class | ||||||
| Prof | 1 | <0.001 | 1 | 0.01 | ||
| Man and tech | 1.21 | 0.72–2.04 | 0.47 | 0.85 | 0.47–1.53 | 0.58 |
| Skilled NM | 1.67 | 1.00–2.77 | 0.05 | 0.88 | 0.48–1.62 | 0.67 |
| Skilled M | 2.47 | 1.38–4.43 | 0.002 | 1.22 | 0.62–2.41 | 0.57 |
| Part skill | 3.63 | 2.10–6.29 | <0.001 | 1.48 | 0.77–2.85 | 0.24 |
| Unskilled | 5.31 | 2.66–10.59 | <0.001 | 1.82 | 0.81–4.06 | 0.15 |
Hosmer-Lemeshow statistic = 0.80. n = 6,655.