Exhibit 1. Children's Demographic Characteristics And Unmet Needs, By Medical Complexity.

Characteristic	Children with medical complexity		Children without medical complexity		Odds ratio
	Number	Percent	Number	Percent
Age (years)
0–5	489	33.0	12,038	21.0	2.18****
6–11	649	37.5	24,916	38.0	1.37
12–17	540	29.5	28,346	41.0	Ref
Sex
Male	1,047	60.6	39,027	59.4	1.05
Female	631	39.4	26,273	40.6	Ref
Race/ethnicity
Non-Hispanic white	1,231	65.3	47, 186	63.2	Ref**
Non-Hispanicblack	148	10.7	6,877	16.9	0.61
Hispanic	186	16.6	6,875	14.0	1.15
Other	113	7.5	4,362	5.9	1.22
Primary language
English	1,607	91.1	63,274	94.9	Ref***
Other	71	8.9	2,026	5.1	1.81
Insurance
Private	557	30.7	40,590	56.2	Ref****
Medicaid	627	42.5	16,546	30.8	2.52
Uninsured	21	1.0	1,978	3.3	0.56
Other	473	25.8	6, 186	9.7	4.86
Income (percent of federal poverty level)
Less than 200	738	51.2	23,095	42.1	1.67****
200–299	293	14.3	11,376	16.1	1.22
300–399	239	13.9	9,937	13.3	1.44
400 or more	408	20.7	20,892	28.5	Ref
Number of unmet needs
0	946	55.8	54,273	80.9	Ref****
1	369	20.0	7,222	12.1	2.38
2	179	12.7	2,389	4.4	4.17
3 or more	184	11.5	1,416	2.6	6.52

SOURCE Authors' analysis of data from the 2005–06 and 2009–10 National Survey of Children with Special Health Care Needs. NOTES There were 1,678 children with medical complexity (weighted number: 481,739) and 65,300 children without medical complexity (weighted number: 17,300,697). Significance indicators are results from Rao-Scott chi-square tests.

^**p < 0.05

^***p < 0.01

^****p < 0.001