Table 3.
Comparison of postconceptional age at which retinopathy of prematurity was first detected, retinopathy of prematurity started regressing and retinopathy of prematurity completely regressed between type 1 retinopathy of prematurity, type 2 retinopathy of prematurity and mild retinopathy of prematurity
| PCA | ETROP classification | n | Mean±SD | 95% CI for mean |
P | |
|---|---|---|---|---|---|---|
| LB | UB | |||||
| PCA at which ROP was detected | Type 1 ROP | 62 | 34.0±2.0 | 33.4 | 34.6 | 0.0005* |
| Type 2 ROP | 75 | 34.4±2.1 | 33.9 | 34.9 | ||
| Mild ROP | 28 | 39.1±4.2 | 37.3 | 41.0 | ||
| PCA at which ROP started regressing | Type 1 ROP | 62 | 39.2±4.9 | 37.8 | 40.5 | 0.002* |
| Type 2 ROP | 75 | 38.5±3.0 | 37.8 | 39.2 | ||
| Mild ROP | 28 | 41.9±3.6 | 40.3 | 43.5 | ||
| PCA at which ROP regressed | Type 1 ROP | 62 | 53.2±6.2 | 51.5 | 54.9 | 0.0005* |
| Type 2 ROP | 75 | 46.6±5.3 | 45.3 | 47.9 | ||
| Mild ROP | 28 | 48.3±6.6 | 45.4 | 51.3 | ||
*P<0.05 was considered significant, one-way ANOVA test. Values are presented as number, mean and SD. ROP: Retinopathy of prematurity, ETROP: Early treatment for ROP classification. PCA: Postconceptional age, SD: Standard deviation, CI: Confidence interval, LB: Lower bound, UB: Upper bound