Table 2
Prevalence of amblyopia (using three different definitions) at 7½ years in children who did or did not receive preschool vision screening (n = 6081)
| Definition of amblyopia | Prevalence in children who had preschool screening (n=1019) No (%) | Prevalence in children who did not have preschool screening (n=5062) No (%) | Unadjusted odds ratio (95% CI) p Value | Adjusted* odds ratio (95% CI) p Value |
|---|---|---|---|---|
| *Adjusted for sex, highest level of maternal education, birth weight, family history of strabismus/amblyopia, and duration of breastfeeding, as these were the factors (of those in Table 1) which remained significantly associated with visual acuity in the worse seeing eye, in a multivariable analysis. | ||||
| A: 0.2+ logMAR or more between best acuity of each eye | 11 (1.1) | 100 (2.0) | 0.53 (0.27 to 1.03) p = 0.052 | 0.63 (0.32 to 1.23) p = 0.237 |
| B: worse eye sees worse than 0.3 logMAR (worse than 6/12 on a Snellen chart) | 7 (0.7) | 65 (1.3) | 0.53 (0.22 to 1.20) p = 0.108 | 0.72 (0.32 to 1.60) p = 0.550 |
| C: worse eye sees 0.18 logMAR or worse (6/9 or worse on a Snellen chart) | 19 (1.9) | 171 (3.4) | 0.54 (0.32 to 0.88) p = 0.011 | 0.65 (0.38 to 1.10) p = 0.161 |
