Table 5.

Binary logistic regression analysis of influencing factors for survival rate.

Influencing factors	β value	Wald χ2	p	OR (95% CI)
Birth weight	0.004	105.750	< 0.001	1.004 (1.004–1.005)
Gestational age	0.190	65.632	< 0.001	1.209 (1.155–1.266)
Discharged year	0.095	31.151	< 0.001	1.100 (1.064–1.137)
Regional economic development	0.131	4.848	0.028	1.140 (1.015–1.281)
Type of hospital	0.486	29.262	< 0.001	1.626 (1.363–1.939)