Results from Bayesian multinomial logistic model for retinopathy of prematurity (ROP) screening status for infants in neonatal units during screening period
| ROP screening | |||
|---|---|---|---|
| Early vs on-time | Late vs on-time | Unknown vs on-time | |
| Infant characteristics | |||
| Gestational age (per 1-week increase) | 1.20 (1.16, 1.24) | 0.83 (0.80, 0.86) | 1.26 (1.21, 1.31) |
| Pregnancy | |||
| Singleton | 1 | 1 | 1 |
| Multiple | 0.89 (0.81, 0.99) | 0.93 (0.85, 1.02) | 0.83 (0.74, 0.92) |
| Intensive care (per 1-week increase) | 1.09 (1.04, 1.15) | 1.02 (0.97, 1.07) | 1.03 (0.96, 1.09) |
| Oxygen support (per 1-week increase) | 0.97 (0.92, 1.03) | 1.02 (0.97, 1.07) | 0.77 (0.72, 0.83) |
| Unit characteristics | |||
| Unit level | |||
| 1 | 1.33 (0.68, 2.30) | 0.94 (0.41, 1.96) | 2.59 (0.84, 6.51) |
| 2 | 0.95 (0.53, 1.55) | 0.96 (0.47, 1.72) | 1.93 (0.69, 3.96) |
| 3 | 1 | 1 | 1 |
| Annual intensive care days | |||
| <500 | 1.24 (0.65, 2.38) | 2.48 (0.99, 4.99) | 1.47 (0.41, 3.43) |
| 500–999 | 1.27 (0.70, 2.28) | 1.49 (0.61, 3.04) | 0.95 (0.27, 2.13) |
| 1000–1999 | 1.39 (0.92, 2.02) | 1.95 (1.11, 3.14) | 1.76 (0.86, 3.09) |
| ≥2000 | 1 | 1 | 1 |
| Intraclass correlation | 0.10 | 0.20 | 0.29 |
Effects of infant and unit characteristics presented as relative risk ratios. All results are posterior mean and 95% credible intervals. Results were also adjusted for year of discharge as the number of unknown screenings reduced over time.