Table 1.
Auditory and visual evaluation at 20 years in the RCT recovered cohort and in the reference group.
| Variables N (%) | RCT recovered cohort ≤ 2000 g N = 441 | Reference group N = 50 | pa |
|---|---|---|---|
| Visual functional evaluation at 20 years (2 categories) N (%) | |||
| Normal bilateral or unilateral vision | 405/434 (93.3) | 49/49 (100) | 0.06 |
| One eye abnormal and the other eye abnormal or moderately abnormal with or without correction | 29/434 (6.7) | 0 | |
| Myopia or amblyopia at 20 years N (%) | |||
| Normal vision or other refractive defects | 232/441 (52.6) | 26/50 (52.0) | 0.94 |
| Uni- or bilateral myopia or amblyopia | 209/441 (47.4) | 24/50 (48.0) | |
| Requires lens correction, as assessed by optometrist N (%) | 232/437 (53.1) | 23/49 (46.9) | 0.41 |
| Functional hearing evaluation at 20 years N (%) | |||
| Normal hearing | 405/441 (91.8) | 46/50 (92.0) | 0.26 |
| Uni or bilateral deafness -general | 36/441 (8.2) | 4/50 (8.0) | |
| Uni or bilateral neurosensorial deafness | 30/441 (6.8) | 2/50 (4.0) | |
| Uni or bilateral conductive deafness | 6/441 (1.4) | 2/50 (4.0) |
Tables were based on retrospective data. There are different denominators according to data available during follow-up. Sometimes patients didn’t attend follow up.
a
Chi2 or Fisher’s exact test was used for qualitative variables and Mann Whitney or Student’s t-test for quantitative variables, according to the distribution of each variable in the comparison groups.