TABLE 2.

Nonparametric Scores of NOS Isoforms and NO Metabolites

Study group	Primary diagnosis	eNOS	nNOS	iNOS	NO2Y	SNO
1	BPD	2	2	3	4	4
2	BPD	3	2	2	4	4
3	BPD	3	3	2	3	4
4	BPD	0	0	3	3	4
5	BPD	0	0	0	2	0
6	BPD	2	2	2	1	1
7	BPD	1	1	NK	2	4
Median	BPD	2	2	2*	3*	4*
8	Control	0	1	1	3	2
9	Control	0	2	0	1	0
10	Control	0	2	0	1	0
11	Control	1	0	0	1	2
12	Control	1	3	0	2	0
13	Control	2	2	0	2	2
14	Control	1	2	0	1	2
Median	Control	1	2	0	1	2

The degree of staining for SNO and NO₂Yon a zero to four scale (0 = no staining or same level as background staining; 1 = slightly more than background staining; 2 = mild positivity, 3 = moderate; 4 = intense staining).

NK: unknown.

^*Represents significantly different from control, P <0.05.