Table 2.

General characteristics of study subjects

	Characteristics	N	%	Mean ± SD
Gender
	Male	250	51.1
	Female	239	48.9
Birth weight (g)
	>2500	109	22.3
	1501–2500	245	50.1
	1001–1500	100	20.4
	≤1000	35	7.2	1983 ± 773
Gestational age (weeks)
	≥37	92	18.8
	32–36	255	52.1
	28–31	113	23.1
	≤27	29	5.9	33.6 ± 3.6
Apgar score at 1 minute
	≥ 8	138	28.2
	4–7	259	53.0
	< 4	92	18.8	5.8 ± 2.4
Apgar score at 5 minute
	≥ 8	239	48.9
	4–7	228	46.6
	< 4	22	4.5	7.2 ± 1.7
Delivery type
	Vaginal	182	37.2
	Caesarean Section	307	62.8
Medical department
	Pediatrics	448	91.6
	Neurosurgery	7	1.4
	General surgery	34	7.0
Diagnosis
	Hyaline membrane disease	63	12.9
	Prematurity	301	61.6
	Congenital anomaly	112	22.9
	Others*	13	2.6
Discharge status
	Live to home	409	83.6
	Live to other hospitals	36	7.4
	Against medical advice(AMA)	24	4.9
	Death	21	4.3
Hospital stay(day)				29.6 ± 23.9(median : 22.4)

* others : carcinogenesis 6, meconium aspiration syndrome 3, chromosomal abnormality 3, facial palsy 1