Effect of preoperative diagnosis, socioeconomic status, age, vascularisation of host cornea, and quality of donor cornea on transplant failure with Cox proportional hazards regression analysis
| Relative risk | 95% Confidence interval | |
|---|---|---|
| Preoperative diagnosis | ||
| Keratoconus | 0.15 | 0.06–0.37 |
| Corneal dystrophies | 0.74 | 0.53–1.03 |
| Corneal scar other than adherent leucoma | 0.91 | 0.72–1.16 |
| Pseudophakic bullous keratopathy | 1.00 | |
| Adherent leucoma | 1.11 | 0.81–1.51 |
| Corneal clouding due to miscellaneous causes including congenital conditions and glaucoma | 1.63 | 1.21–2.19 |
| Aphakic bullous keratopathy | 1.78 | 1.38–2.28 |
| Previous transplant failure | 2.04 | 1.62–2.55 |
| Socioeconomic status | ||
| Higher | 1.00 | |
| Lower | 1.28 | 1.16–1.42 |
| Age | ||
| >10 years | 1.00 | |
| ⩽10 years | 1.42 | 1.23–1.64 |
| Vascularisation of host cornea | ||
| No | 1.00 | |
| Yes | 1.15 | 1.04–1.27 |
| Quality of donor cornea | ||
| Excellent, very good, good | 1.00 | |
| Fair | 1.26 | 1.06–1.52 |