How well does the minimum data set measure healthcare use? a validation study

Table 4 Adjusted Odds Ratios (95% Confidence Limits) Comparing the Disagreement between MDS and Administrative Data

	Newly Admitted Residents	Residents Admitted from Hospital versus Another Location	Residents with 1+ NH Transfer	Residents who Died	Hospital Inpatient Visits	ED Visits not ending in Hospitalization	Days of Physician Examinations
Resident Age (ref = < 65 years old)
65–74 years old	0.9 (0.4, 2.0)	1.0 (0.5, 2.1)	0.6 (0.3, 1.3)	1.1 (0.5, 2.6)	0.8 (0.6, 1.1)	0.9 (0.7, 1.2)	1.1 (0.9, 1.1)
75–84 years old	0.6 (0.3, 1.3)	1.4 (0.7, 2.6)	0.8 (0.4, 1.4)	0.9 (0.4, 2.0)	0.8 (0.6, 1.1)	1.0 (0.8, 1.4)	1.1 (0.9, 1.2)
85+ years old	0.3 (0.2, 0.7)†	1.2 (0.6, 2.2)	0.3 (0.2, 0.6)‡	1.0 (0.5, 2.1)	0.7 (0.5, 1.0)*	1.0 (0.8, 1.3)	1.0 (0.9, 1.2)
Resident Sex (ref = Female)
Male	0.8 (0.5, 1.1)	1.0 (0.7, 1.2)	1.6 (1.1, 2.1)†	1.5 (1.1, 2.0)†	1.1 (0.9, 1.3)	1.0 (0.9, 1.1)	1.0 (0.9, 1.0)
Nursing Home Owner Operator Type (ref = Not-for-profit)
For Profit	1.6 (0.9, 2.8)	1.2 (0.6, 2.2)	0.7 (0.4, 1.1)	0.5 (0.3, 0.7)‡	1.3 (1.0, 1.7)*	1.2 (0.9, 1.6)	1.0 (0.9, 1.2)
Both^	5.1 (2.8, 9.0)‡	1.5 (0.8, 2.8)	11.7 (7.9, 17.4)†	0.9 (0.6, 1.6)	1.4 (1.0, 1.8)*	1.2 (0.9, 1.5)	1.1 (0.9, 1.2)
Model Parameters
Intraclass Correlation (ICC)	0.22	0.22	0.14	0.11	0.03	0.05	0.03
C Statistic	0.64	0.58	0.77	0.60	0.57	0.54	0.52

*p < .05; †p < .01; ‡p < .001
^Represents people who transferred between a for profit & not-for-profit nursing home during the study period

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