Potential oxidative stress in children with chronic constipation

Table 1 Demographic data and other data in children with chronic constipation and HCVs (mean±SD).

Item	CCCPs (n = 70)	HCVs (n = 70)	Statistical analysis
Age (yr)	7-14	7-14	t = 0.4731
	(10.60±1.94)	(10.44±1.98)	P = 0.637
Sex	M = 38	M = 35	χ2 = 0.2582
	F = 32	F = 35	P = 0.735
Systolic pressure	60-105	60-106	t = 0.0501
(mmHg)	(84.63±10.16)	(84.54±10.24)	P = 0.960
Diastolic pressure	41-66	43-66	t = 0.4581
(mmHg)	(55.85±5.95)	(55.39±5.98)	P = 0.648
Hemoglobin	116-140	122-141	t = 0.9281
(g/L)	(134.0±5.5)	(134.8±4.4)	P = 0.355
Albumin	31.64-42.86	31.69-42.57	t = 0.6941
(g/L)	(38.49±2.25)	(38.23±2.15)	P = 0.489
Body-mass	20.81-24.82	21.14-24.86	t = 0.0981
index	(23.27±1.08)	(23.25±1.12)	P = 0.922

¹Independent-sample t test,

²Pearson chi-square test (Exact Sig).

Table 2 Comparison between average values of biochemical parameters in children with chronic constipation and HCVs (mean±SD).

Group	n	Plasma		Erythrocyte
		VC (mmol/L)	VE (mmol/L)	SOD (U/g.Hb)	CAT (K/g.Hb)	LPO (nmol/g.Hb)
CCCPs	70	46.59±11.51	20.65±4.80	1 943±147	269.3±67.8	25.22±5.01
		(43.84±49.33)	(19.51±21.80)	(1908±1978)	(253.0±285.6)	(24.03±26.42)
HCVs	70	58.35±14.42	27.15±6.55	2 206±171	327.3±82.2	19.18±4.27
		(54.91±61.79)	(25.59±28.71)	(2165±2247)	(307.7±346.9)	(18.17±20.20)
t1		5.535	6.695	9.796	4.543	7.677
P		<0.01	<0.01	<0.01	<0.01	<0.01

¹Independent-samples t test. The figures in parentheses are 95% confidence interval (95% CI).

Table 3 Partial correlation analysis between the course of disease and each parameter for children with chronic constipation.

Correlative item	n	Partial correlation coefficient
		Zero order partials		Controlling for age
		r	P	r	P
Course and VC	70	-0.4999	<0.01	-0.4823	<0.01
Course and VE	70	-0.4868	<0.01	-0.4658	<0.01
Course and SOD	70	-0.5856	<0.01	-0.5129	<0.01
Course and CAT	70	-0.5848	<0.01	-0.4933	<0.01
Course and LPO	70	0.7491	<0.01	0.5027	<0.01