Effects of different timing nutritional support on the growth and development < 2 kg newborns and mothers' anxiety and depression

Table 1 Comparison of baseline data between two groups, n (%)/mean ± SD

Baseline information	Group S (n = 32)	Group L (n = 32)	t/χ2 value	P value
Gestational age (weeks)	31.87 ± 2.94	31.68 ± 3.21	0.267	0.806
Delivery method			0.291	0.590
Caesarean section	21 (65.63)	23 (71.88)
Natural childbirth	11 (34.37)	9 (28.12)
Gender			0.063	0.802
Male baby	17 (53.13)	18 (56.25)
Female infant	15 (46.87)	14 (43.75)
Birth weight (kg)	1.63 ± 0.26	1.66 ± 0.32	0.412	0.682
Birth length (cm)	41.15 ± 3.17	41.31 ± 3.28	0.198	0.843
Birth head circumference (cm)	30.24 ± 3.63	30.22 ± 3.59	0.022	0.982
Mother's age (years)	26.76 ± 4.28	26.48 ± 4.17	0.265	0.791
Mother's reproductive history			0.066	0.798
Primipara	19 (59.38)	20 (62.50)
Multipara	13 (40.62)	12 (37.50)
Mother education degree			1.036	0.309
High school and below	15 (46.87)	11 (34.37)
College or higher	17 (53.13)	21 (65.63)
Maternal high risk factors during pregnancy
Gestational diabetes mellitus	6 (18.75)	7 (21.88)	0.097	0.756
Gestational hypertension	13 (40.63)	10 (31.25)	0.611	0.434
Gestational hypothyroidism	5 (15.63)	3 (9.38)	0.571	0.450