. 2015 Mar 14;11(1):142–148. doi: 10.5114/aoms.2015.49204

Table II.

Statistical analysis of neonatal outcome parameters in two groups: with abnormal vs. normal C/U

Neonatal outcome parameters	Abnormal C/U (n = 69)	Normal C/U (n = 79)	Value of p^a
Birth weight [g]:
Mean ± standard deviation	3485 ±580	3814 ±599	0.0009^*
Range	1730–4470	2760–5130	0.0009^*
1-minute Apgar score:
Median	7	10	0.0001^*
Range	0–10	6–10
Quartile (Q25–Q75)	6–10	10–10
5-minute Apgar score:
Median	10	10	0.0001^*
Range	2–10	7–10
Quartile (Q25–Q75)	7–10	10–10
_PH:
Mean	7.2 ±0.2	7.3 ±0.1	0.0001^*
Median	7.26	7.34
Range	6.80–7.54	7.13–7.46
Quartile (Q25–Q75)	7.14–7.34	7.29–7.37
_PO₂ [mm Hg]:
Mean	17.7 ±8.3	22.6 ±9.8	0.0009^*
Median	17.0	23.0
Range	3.0–38.0	2.0–54.0
Quartile (Q25–Q75)	11.0–23.0	17.0–28.0
_PCO₂ [mm Hg]:
Mean	53.0 ±17.7	42.9 ±8.2	0.0001^*
Median	48.0	41.0
Range	22.0–109.0	27.0–80.0
Quartile (Q25–Q75)	42.0–60.0	38.0–46.0
BE [mEq/l]:
Mean	–7.4 ±5.9	–3.7 ±3.0	0.0001^*
Median	–6.3	–3.5
Range	(–25.0)–(1.2)	(–11.5)–(1.4)
Quartile (Q25 – Q75)	(–10.3)–(–2.9)	(–6.2)–(–1.3)
Adverse neonatal outcome:
n	35	5	0.0001^*
%	50.7	6.3	0.0001^*
Birth weight < 10 percentile:
n	4	0	0.0450^*
%	5.8	0.0	0.0450^*
1-minute Apgar score < 7:
n	39	4	0.0001^*
%	56.5	5.1	0.0001^*
5-minute Apgar score < 7:
n	19	1	0.0001^*
%	27.5	1.3	0.0001^*
_PH < 7,2^b:
n	27	2	0.0001^*
%	39.1	2.5	0.0001^*
pO₂ < 15 mm Hg^b:
n	30	19	0.0145^*
%	43.5	24.0	0.0145^*
_PCO₂ > 45 mm Hg^b:
n	31	13	0.0002^*
%	44.9	16.5	0.0002^*
BE < –12 mEq/l^b:
n	24	4	0.0001^*
%	34.8	5.1	0.0001^*
MSAF:
n	32	19	0.0055^*
%	46.4	24.1	0.0055^*

C/U – cerebroplacental ratio, n – number, pO₂ – oxygen partial pressure, pCO₂ – carbon dioxide partial pressure, BE – base excess, MSAF – meconium-stained amniotic fluid.

P-value evaluated with t-test for independent variables and Mann-Whitney U-test or with two-sided Fisher's exact test

Umbilical cord blood parameters

Statistically significant difference.