Table 1 Comparison of values in umbilical cord artery blood

	0 Minutes	60 Minutes	120 Minutes	Repeated measures ANOVA(p value)	0–60 Minutes(p value)	0–120 Minutes(p value)	60–120 Minutes(p value)
pH	7.120 (0.062)	7.144 (0.061)	7.147 (0.061)	0.008	0.006	0.05	0.9
po₂	14.81 (21.88)	17.50 (21.37)	20.33 (20.42)	0.1	–	–	–
pco₂	69.56 (12.83)	53.66 (16.88)	44.02 (13.69)	<0.001	<0.001	<0.001	<0.001

Data are presented as mean (SD).
ANOVA, analysis of variance ; pco₂ (mm Hg), carbon dioxide pressure; po₂ (mm Hg), oxygen pressure.