Table 3.
Risk ratios for each of potential predictive factors- previous recurrence, alignment, stereoacuity
| Factor | Total N | N (%) with recurrence | Unadjusted risk ratio(95% confidence interval) | Risk ratio adjusted for treatment intensity/weaning (95% confidence interval) | Composite model 1 | Composite model 2 |
|---|---|---|---|---|---|---|
| Previous amblyopia recurrence (at any time) | ||||||
| No | 61 | 12 (20%) | Reference | Reference | Reference | Reference |
| Yes | 4 | 3 (75%) | 3.8 (1.8, 8.2) | 2.7 (1.5, 4.9) | 2.6 (1.1, 6.5) | 2.4 (1.0, 5.8) |
| Unknown | 4 | 2 (50%) | ||||
| Ocular alignment at cessation of patching | ||||||
| Ortho at distance and near | 34 | 8 (24%) | Reference | Reference | -- | -- |
| Microtropia (1–8D) at distance or near | 20 | 5 (25%) | 1.1 (0.40, 2.8) | 0.95 (0.38, 2.4) | ||
| Heterotropia (>8D) at either distance or near | 15 | 4 (27%) | 1.1 (0.40, 3.2) | 1.2 (0.45, 3.0) | ||
| Randot preschool stereoacuity at cessation of patching | ||||||
| 40–60 | 6 | 2 (33%) | 1.2 (0.35, 4.5) | 1.0 (0.32, 3.2) | -- | -- |
| 100–200 | 10 | 1 (10%) | 0.38 (0.05, 2.6) | 0.54 (0.09, 3.4) | ||
| 400–800 | 14 | 3 (21%) | 0.80 (0.25, 2.6) | 1.0 (0.32, 3.3) | ||
| Nil | 30 | 8 (27%) | Reference | Reference | ||
| Failed pretest | 7 | 3 (43%) | ||||
| Not done | 2 | 0 (0%) | ||||
| 40–60 | 6 | 2 (33%) | 1.5 (0.44, 5.2) | 1.1 (0.36, 3.2) | -- | -- |
| 100–Nil | 54 | 12 (22%) | Reference | Reference |