Table 3. Distibution of length of stay (LoS) after childbirth by clinical factors of the child.

Number; mean LoS (M) ± standard deviation (SD); row percentage (row %).

FACTORS	STRATA		ALL BIRTHS		VAGINAL DELIVERY MODE
			Number	M ± SD (days)	SPONTANEOUS (N = 75,497)	INSTRUMENTAL (N = 7,281)
					LoS > 2 days (Row %)	LoS > 3 days (Row %)
CHILD’S SIZE FACTORS
Gestational age (weeks)	<29		563	4.7 ± 3.5	47.6	0
	29–32		1,130	4.6 ± 2.4	47.2	57.1
	33–36		6,217	4.6 ± 2.2	76.9	56.2
	37–40		82,637	3.3 ± 1.3	63.9	31.5
	41+		18,699	3.2 ± 1.3	64.2	31.1
Birthweight (gr) (Missing: 5)	<1000		525	4.8 ± 2.8	49.0	52.9
	1,000–1,499		668
	1,500–1,999		1,330
	2,000–2,499		4,524	4.6 ± 2.2	78.1	42.8
	2,500–3,999		95,954	3.3 ± 1.3	64.3	31.5
	4,000–4,499		6,576	3.3 ± 1.3	62.2	35.1
	4,500+		664
Placenta weight (gr) (Missing: 172)	<500		22,862	3.5 ± 1.7	68.1	32.5
	500–599		35,744	3.2 ± 1.3	63.7	31.2
	600–999		49,048	3.3 ± 1.4	63.1	32.3
	1,000–1,500		1,420	4.9 ± 2.1	70.8	57.1
Child’s size *	SGA		9,122	3.7 ± 1.7	68.6	34.4
	AGA		88,138	3.3 ± 1.4	63.8	30.9
	LGA		11,986	3.4 ± 1.4	66.0	38.1
CHILD’S FRAGILTY FACTORS
Apgar score 1 minute	<7		6,807	4.0 ± 2.3	65.8	32.9
	7+		102,439	3.3 ± 1.4	64.3	31.9
Apgar score 5 minute	<8		2,386	4.1 ± 2.6	56.7	38.3
	8+		106.860	3.3 ± 1.4	64.5	31.8
ICU admission (Missing: 221)	No		103,900	3.3 ± 1.4	64.4	32.1
	Yes		5,125	4.5 ± 2.5	62.8	31.5
Resuscitation (Missing: 54)	No		106,774	3.3 ± 1.4	64.4	32.0
	Yes		2,418	4.5 ± 2.7	63.5	33.1
Multiple births (Missing: 898)	Singleton	Female	51,806	3.3 ± 1.4	64.3	31.1
		Male	54,797
	Twins or more		1,745	5.2 ± 2.0	74.0	58.3

* SGA = Small for Gestational Age; AGA = Appropriate for Gestational Age; LGA = Large for Gestational Age