Table 3.
Demographic characteristics associated with the need for systemic CRD
| Characteristics | CRD patients/total | Odds ratio (95% CI) | p value |
| Gender | |||
| Female | 22/36 | Reference | – |
| Male | 26/36 | 1.77 (0.66–4.70) | 0.255 |
| Family history | |||
| No | 25/40 | Reference | – |
| Yes | 23/32 | 1.32 (0.49–3.56) | 0.581 |
| Laterality | |||
| Unilateral | 5/18 | Reference | – |
| Bilateral | 43/54 | 7.60 (2.45–23.54) | <0.0001 |
| International classification | |||
| A | 3/5 | Reference | – |
| B | 10/11 | 6.67 (0.44–101.73) | 0.172 |
| C | 8/8 | NA | NA |
| D | 7/19 | 0.39 (0.05–2.92) | 0.359 |
| E | 20/29 | 1.78 (0.25–12.45) | 0.562 |
| Eye classification | |||
| Groups A, B | 13/16 | Reference | – |
| Group C or worse | 35/56 | 0.43 (0.11–1.67) | 0.223 |
| Eye classification | |||
| Groups A-C | 21/24 | Reference | – |
| Group D or worse | 27/48 | 0.21 (0.06–0.80) | 0.021 |
CI = Confidence interval; NA = not available.