Zone-wise comparison of incidence of retinopathy of prematurity in urban and semiurban cohorts
| Incidence | Urban | Semiurban | Total |
|---|---|---|---|
| Zone I | |||
| Col% | 7.5 | 15.8 | 11.5 |
| Count | 3 | 6 | 9 |
| Zone II | |||
| Col% | 57.5 | 52.6 | 55.1 |
| Count | 23 | 20 | 43 |
| Zone III | |||
| Col% | 35.0 | 31.6 | 33.3 |
| Count | 14 | 12 | 26 |
| Total | |||
| Col% | 100.0 | 100.0 | 100.0 |
| Count | 40 | 38 | 78 |
Col%, column percentage; Count, denotes the number of babies in the cohort.