Table 3.

Medical care use of children with special health care needs, by complexity.

	Less- Complex n=9,897,115	More- Complex n=324,323	p
Child’s health care needs
change all the time, %	5	32	<.001
change sometimes, %	28	33
usually stable, %	67	35
Number of school days missed, median [IQR]	3 [1, 8]	10 [5, 16-20]	<.001
Number of doctor visits, median [IQR]	4 [2, 7]	11-15 [6, >21]	<.001
Number of emergency room visits, median [IQR]	0 [0, 1]	1 [0, 3]	<.001
Received early intervention services, % (<3 years)	19	82	<.001
Received special education services, % (3-17 years)	27	77	<.001

All data weighted. P values were derived from Chi-square for proportions and Mann-Whitney for non-parametric tests.