Table 2.

Comparison of Propensity Score Weighted Oregon and Colorado Medicaid Enrollees (July 2010-December 2011)

Characteristic	Oregon Medicaid	Colorado Medicaid	Standardized Difference†
Enrollees (N)	452,371	330,511
Age (yr)			−13.0
Mean	17.4	16.0
Median	12	12
Interquartile range	6–24	6–25
Female sex	54.5%	55.4%	3.1
CDPS risk score			−4.2
Mean	1.0	1.0
Median	0.6	0.6
Interquartile range	0.5–1.0	0.5–1.0
Rural residence	27.8%	27.1%	−1.2

^†A standardized difference less than 10 may be regarded as indicative of a negligible difference in the prevalence of a covariate between the treatment and control groups