Table 1.

Description of Pooled Study Sample Characteristics by ASD status Adults with and without ASD matched on age and gender 2006-2011 Nationwide Emergency Department Sample (n =102,108)

		ASD		No ASD		Sig.
		N	Col. Wt. %	N	Col. Wt. %
Sex
	Male	19,286	75.5	57,858	75.7	ns
	Female	6,241	24.5	18,723	24.3
Age (in years)
	22-40	17,961	70.2	53,883	70.3	ns
	41-54	5,575	21.8	16,725	21.9
	55-64	1,991	8.0	5,973	7.8
Income Groups (quartiles)						***
	Q1	5,364	21.2	24,787	32.4
	Q2	6,230	24.5	20,783	27.2
	Q3	6,590	25.8	16,848	21.9
	Q4	6,612	25.8	12,119	15.8
	Missing	731	2.8	2,044	2.7
Primary
Payer						***
	Public	20,483	80.4	19,496	25.7
	Private	3,764	14.7	25,938	34.3
	Self-Charge	807	3.2	23,934	31.1
	No Charge/Other	424	1.7	6,763	9.0
Hospital Region						***
	North-east	7,453	29.6	15,211	20.5
	Mid-west	6,446	27.0	16,366	23.5
	South	7,476	27.1	32,132	38.8
	West	4,152	16.3	12,872	17.2
Hospital Location
	Rural	945	4.0	5,345	7.3	***
	Urban	24,459	95.5	70,503	91.8
	Missing	123	0.5	733	1.0
ED Event						***
	Treat and release	16,340	64.0	66,751	87.1
	Inpatient admission	8,651	33.9	8,136	10.6
	Transfer	326	1.3	804	1.1
	Died/other	210	0.8	890	1.2
Mortality Events		181	0.7	16,186	0.3	***
Mean total ED charges mean (SE)		$14,289 ($418)		$6,196 ($165)		***

The estimates are provided from NEDS representing ED visits with adults aged 22-64 years from the years 2006-2011; ED visits with and without ASD were matched on age and gender; Col. Wt. %: Column weighted percentages; SE: Standard errors; ns: not significant at p<0.05 level.

Sig.:

^***P < 0.001;

**0.001 ≤ P < 0.01; * 0.01 ≤ P < 0.05.