Table 3.

Prethreshold ROP worse in CRYO-ROP study or ETROP and RW-ROP in e-ROP

	CRYO-ROP (N=4099)	ETROP (N=6998)§	e-ROP (N=1257)
Black	208/1583 (13.1%)	233/2114 (11.0%)	51/371 (13.8%)
Non-black	523/2516 (20.8%)	768/4884 (15.7%)	162/763 (21.2%)
Unable to answer			31/123 (25.2%)
Male	367/1970 (18.8%)	543/3585 (15.2%)	136/638 (21.3%)
Female	364/2129 (17.1%)	457/3413 (13.4%)	108/619 (17.5%)
<750g	255/647 (39.4%)	550/1745 (31.5%)	163/420 (38.8%)
750–999g	341/1590 (21.4%)	349/2640 (13.2%)	66/444 (14.9%)
1000–1250g	135/1862 (7.3%)	102/2613 (3.89%)	15/393 (3.82%)
≤27 weeks	519/1794 (28.9%)	893/4172 (21.4%)	232/856 (27.1%)
>27–31 weeks	204/2027 (10.1%)	105/2587 (4.07%)	11/370 (2.97%)
≥32 weeks	8/278 (2.9%)	2/239 (2.34%)	1/31 (3.23%)
Inborn	551/3353 (16.4%)	821/5887 (13.9%)	102/792 (12.9%)
Outborn	180/746 (24.1%)	180/1111 (16.2%)	142/465 (30.5%)
Single birth	573/3335 (17.2%)	703/5162 (13.6%)	169/882 (19.2%)
Multiple birth	158/764 (20.7%)	298/1836 (16.2%)	75/375 (20.0%)
Total	731/4099 (17.8%)	1001/6998 (14.3%)	244/1257 (19.4%)

^§Estimated from multivariate logistic regression equation to include all patients screened for ROP in the ETROP Study.