Logistic regression models for the association between screening with the Infant Toddler Checklist (ITC) at 18 months and developmental diagnosis at 3–5 years (n=488)
| Unadjusted analysis | Adjusted analysis* | |||
| Predictor | OR (95% CI) | P value | OR (95% CI) | P value |
| Positive ITC screen | 4.96 (2.02 to 12.16) | <0.001 | 4.48 (1.72 to 11.64) | 0.002 |
| Age at follow-up, months | 0.98 (0.94 to 1.02) | 0.29 | 0.97 (0.93 to 1.02) | 0.19 |
| Sex, male | 2.95 (1.16 to 7.49) | 0.02 | 3.05 (1.17 to 7.97) | 0.02 |
| Birth weight, kg | 0.98 (0.50 to 1.95) | 0.96 | 0.95 (0.47 to 1.93) | 0.88 |
| Maternal ethnicity | ||||
| Non-European | 2.36 (1.05 to 5.31) | 0.04 | 2.10 (0.83 to 5.31) | 0.12 |
| European | 1.00 (ref) | — | 1.00 (ref) | — |
| Family income ($C) | ||||
| Less than $40 000 | 2.73 (0.82 to 9.15) | 0.1 | 1.32 (0.33 to 5.30) | 0.69 |
| $40 000–$79 999 | 1.17 (0.31 to 4.33) | 0.82 | 0.69 (0.17 to 2.89) | 0.62 |
| $80 000–$149 999 | 0.75 (0.27 to 2.08) | 0.58 | 0.65 (0.23 to 1.85) | 0.42 |
| $150 000+ | 1.00 (ref) | — | 1.00 (ref) | — |
Bold=statistically significant findings at p<0.05.
*Adjusted for child age at follow-up in months, child sex, birth weight, maternal ethnicity, family income. All covariates were measured at baseline except child age which was at follow-up.