Table 2.
Demographic and Clinical Characteristics of Infants for Retinopathy of Prematurity Screening between 2019 and 2020 from February to October
| Demographic and clinical characteristics | Screening assisted by telemedicine network in 2020 No. (%)(N = 267) | Usual screening in 2019 No. (%)(N = 653) | P value |
|---|---|---|---|
| Male | 149 (55.8) | 375 (57.4) | 0.652c |
| Gestational age, median (IQR), weeks | 32 (30 to 34) | 33 (31 to 34) | <0.001d |
| Birth weight, median (IQR),g | 1780 (1460 to 2100) | 1900 (1510 to 2300) | 0.001d |
| Birth weight group, g | 0.003c | ||
| <1500 | 72 (27.0) | 136 (20.8) | 0.043c |
| 1500 to <2000 | 103 (38.6) | 214 (32.8) | 0.093c |
| ≥ 2000 | 92 (34.5) | 303 (46.4) | 0.001c |
| Ocular findings | |||
| Total | 25 (9.4) | 48 (7.4) | 0.305c |
| Zone III Phase 1 | 12 (4.5) | 35 (5.4) | 0.588c |
| Zone III Phase 2 | 3 (1.1) | 1 (0.2) | 0.076b |
| Zone II Phase 1 | 1 (0.4) | 1 (0.2) | 0.496b |
| Zone II Phase 2 | 1 (0.4) | 5 (0.8) | 0.678b |
| Zone II Phase 2 Plus | 1 (0.4) | 2 (0.3) | >0.99b |
| CMV retinitis | 3 (1.1) | 1 (0.2) | 0.076b |
| Retina hemorrhage | 3 (1.1) | 3 (0.5) | 0.364b |
| Optic disc dysplasia | 1 (0.4) | – | – |
| Traffic (come from other cities) | 154 (57.7) | NA | – |
ROP: Retinopathy of Prematurity; CMV: Cytomegalovirus; NA: not available
b Fisher’s exact probability test
c: χ2 Test
d: Mann-Whitney U test