Table 2.

crSO2 (%) in 23 preterm neonates with FIRS and 23 preterm neonates without FIRS (FIRS group and non-FIRS group).

Time after birth	FIRS	non-FIRS	p-value
2 min	31 (23–39)	24 (16–32)	0.234
3 min	36 (28–43)	30 (22–38)	0.301
4 min	40 (33–48)	37 (30–44)	0.526
5 min	44 (37–52)	47 (40–55)	0.559
6 min	51 (44–59)	54 (47–61)	0.629
7 min	57 (50–65)	61 (53–68)	0.569
8 min	62 (55–70)	62 (55–69)	0.949
9 min	67 (59–74)	65 (57–72)	0.696
10 min	71 (64–78)	68 (61–76)	0.593
11 min	72 (65–79)	70 (63–78)	0.749
12 min	72 (64–79)	72 (65–80)	0.903
13 min	71 (63–78)	72 (64–79)	0.820
14 min	71 (64–79)	71 (64–78)	0.921
15 min	73 (65–80)	70 (63–78)	0.648

Data are presented as mean (95% CI) of the estimated model.