Table 3.

Percent Agreement between the SBI and Medicaid Sources on the Length of Enrollment in the Dual Program and Mean Number of Months of Enrollment in the Dual Program

	Michigan		Ohio
	Prediagnosis	Postdiagnosis	Prediagnosis	Postdiagnosis
% Agreement between the two sources* on length of enrollment in the dual program
1–6 months	20.1	22.9	20.2	29.7
7–12 months	69.6	69.6	69.6	62.1
Mean number of months (and STD) of enrollment in the dual program on which the two sources* agree, on a month-per-month basis	8.6 (5.0)	8.5 (4.5)	8.5 (5.0)	7.7 (4.9)

^*The two sources refer to the state buy-in variable in the Medicare denominator file and the Medicaid enrollment files.

STD, standard deviation.