Effects of pulmonary surfactant combined with noninvasive positive pressure ventilation in neonates with respiratory distress syndrome

Table 1 Clinical data

Parameter	Observation group, n = 73	Control group, n = 64	X2/t	P value
Sex			0.456	0.499
Male	38 (52.05)	37 (57.81)
Female	35 (47.95)	27 (42.19)
Gestational age in wk	33.37 ± 2.12	32.87 ± 2.05	1.399	0.164
Body mass in kg	2.82 ± 0.69	2.71 ± 0.58	1.002	0.318
Apgar score	8.47 ± 1.31	8.28 ± 1.26	0.862	0.390
Age of pregnant woman in yr	27.3 ± 4.8	26.5 ± 4.1	1.041	0.230
Hypertension of Pregnant Women	9 (12.33)	5 (7.81)	0.758	0.384
Diabetes of pregnant women	11 (15.07)	7 (10.94)	0.510	0.475
Premature rupture of membranes	9 (12.33)	10 (15.63)	0.310	0.578
Delivery mode			0.566	0.452
Eutocia	41 (56.16)	40 (62.50)
Cesarean section	32 (43.84)	24 (37.50)
Premature delivery			0.804	0.370
Yes	52 (71.23)	41 (64.06)
No	21 (28.77)	23 (35.94)
Delivery history			0.027	0.870
Primiparity	50 (68.49)	43 (67.19)
Multiparity	23 (31.51)	21 (32.81)