Variable (Item)	n		Okawa medical region Okawa night emergency children’s clinic		Takamatsu medical region
					Takamatsu night emergency children’s clinic		One group of hospitals on rotational duty		Kagawa university hospital
			n Mean	% SD	n Mean	% SD	n Mean	% SD	n Mean	% SD
Family structure^a n = 9090
NFFW	2822		115	23.2	538	36.8	244	37.1	166	33.6
NFDI	3831		222	44.8	634	43.4	271	41.3	209	42.3
LGFW	639		49	9.9	74	5.0	36	5.5	33	6.7
LGDI	1245		79	15.9	121	8.3	67	10.2	64	13.0
Single mother	272		13	2.6	52	3.6	22	3.4	12	2.4
SFG	49		3	0.6	10	0.7	2	0.3	0	0.0
SMG	232		15	3.0	32	2.2	15	2.3	10	2.0
Number of children^b n = 9418
One	1948		90	17.6	374	24.7	151	22.2	124	24.4
Two	5130		299	58.4	822	54.3	356	52.4	263	51.7
Three	2025		107	20.9	283	18.7	152	22.4	108	21.2
Four or more	315		16	3.1	36	2.4	21	3.1	14	2.8
			ABCD		D		ABCD		BCD
Medical region^a n = 9445
Okawa	871		486	94.2	11	0.7	33	4.9	151	29.4
Takamatsu	4161		29	5.6	1469	96.9	599	88.1	353	68.7
Chusan	2880		1	0.2	31	2.0	39	5.7	6	1.2
Mitoyo	1409		0	0.0	3	0.2	8	1.2	2	0.4
Syozu	124		0	0.0	2	0.1	1	0.2	2	0.4
Medical examination and treatment^a n = 8620
A medical examination	1634		106	22.2	297	21.5	137	23.0	67	13.8
Internal medicine, suppository etc.	4566		314	65.7	917	66.4	217	36.4	216	44.4
Infusion, inhalation etc.	1369		58	12.1	167	12.1	100	16.8	103	21.2
Hospitatization	1051		0	0.0	0	0.0	143	24.0	100	20.6
PAPEMCS^b
Parental anxiety about quality of pediatric emergency medical care services		2.74		0.8	2.79	0.8	2.90	0.8	2.78	0.9
		B			B		A		AB
Parental anxiety about pediatric emergency medical care service system		2.87		0.9	2.73	0.8	2.82	0.8	2.65	0.9
		A			BC		AB		C
Parental anxiety about public support		2.23		0.7	2.12	0.7	2.18	0.7	2.23	0.8
Parental anxiety about public support		A			A		A		A
Parental anxiety about private support		1.92		1.0	2.08	1.0	2.07	1.0	2.10	1.1
Parental anxiety about private support		BC			A		ABC		ABC
Scale		2.55		0.7	2.55	0.6	2.63	0.6	2.54	0.7
Scale		AB			AB		A		AB