Prevalence of strabismus, cicatricial retinopathy of prematurity, and cerebral palsy in children born before 32 weeks’ gestation according to whether the family attended for follow up at 2 years as a routine (group 1), were difficult to trace (group 2), or were very reluctant to attend (group 3). Significance levels are for comparisons with group 1
| Group 1 (n=505) | Group 2 (n=20) | Group 3 (n=33) | Total (n=558) | |
|---|---|---|---|---|
| Strabismus: | ||||
| Incidence | 53 (10.5%) | 4 (20.0%) | 13 (39.4%) | 70 (12.5%) |
| RR (95%CI) | 2.13 (0.69, 6.61) | 5.54 (2.61, 11.78) | ||
| p value | 0.19 | <0.001 | ||
| Cicatricial ROP: | ||||
| Incidence | 10 (2.0%) | 0 | 6 (18.2%) | 16 (2.9%) |
| RR (95%CI) | 0.005 (0, &) | 10.91 (3.69, 32.25) | ||
| p value | 0.81 | <0.001 | ||
| Cerebral palsy: | ||||
| Incidence | 37 (7.3%) | 2 (10.0%) | 15 (45.5%) | 54 (9.7%) |
| RR (95%CI) | 1.41 (0.31, 6.29) | 10.54 (4.92, 22.60) | ||
| p value | 0.66 | <0.001 |