Table 2.

Patients-Related Comorbidity Scores (PCCL)

PCCL	N in ROP	% in ROP	N In non-ROP	% in non-ROP	OR (95% CI)	p-value
0	105	7.9%	747,592	94.2%	0.01 (0.00–0.01)	0.0001
1	0	0.0%	94	0.0%	3.2 (0.20–51.1)	0.4158
2	6	0.5%	3440	0.4%	1.04 (0.5–2.3)	0.9158
3	292	22.0%	29,499	3.7%	7.3 (6.4–8.3)	0.0001
4	287	21.6%	8119	1.0%	25.9 (22.7–29.5)	0.0001
5	426	32.1%	4174	0.5%	81.3 (72.2–91.6)	0.0001
6	210	15.8%	888	0.1%	136.1 (116.1–159.5)	0.0001

PCCL Patients-Related Comorbidity Scores, ROP Retinopathy of Prematurity, N count, Other n other in neonates, OR odds ratio