The Association between NOS3 Gene Polymorphisms and Hypoxic-Ischemic Encephalopathy Susceptibility and Symptoms in Chinese Han Population

Table 1

Demographic and clinical characteristics of the participants with their mother.

Characteristics	Patients	Controls
Children
Sample size ()	226	212
Gender ()
Male	122	119	0.204	0.701
Female	104	93
Gestation week (weeks)	38.30 ± 0.96	38.36 ± 1.19	0.558	0.577
Birth weight ()
≤1000 g	6	3	7.488	0.058
1001~1499 g	51	40
1500~2499 g	117	96
≥2500 g	52	73
Apgar score ()
≤5	72	49	16.404	0.001
6~7	65	51
8~9	49	39
10	40	73
Grade ()
Slightly	101
Moderately	97
Severely	26
Their mother
Sample size (N)	208	200
Age (years)	26.32 ± 2.19	26.19 ± 2.05	−0.615	0.538
Antepartum weight (Kg)	57.73 ± 7.28	58.41 ± 7.64	0.916	0.360
Complications (%)
Hypertension	6.4	5.9	0.011	0.916
Heart disease	2.6	2.0	0.077	0.781
Diabetes mellitus	8.6	6.9	0.386	0.534
Anemia	9.7	10.3	0.088	0.766
Factors in parturient
Conception times of parturient (times)	1.22 ± 0.10	1.21 ± 0.09	−1.056	0.292
Amniotic fluid volume (L)	1.02 ± 0.08	1.03 ± 0.09	1.181	0.238
Amniotic fluid pollution (%)	19.4	13.7	2.262	0.133
Umbilical cord around the neck (%)	17.4	16.9	0.007	0.934
Premature rupture of membranes (%)	2.4	1.8	0.077	0.781