Variables	IRR (95% CI)
Individual Level
Male	0.978 (0.972, 0.985)‡
Age (years)	1.00 (1.00, 1.00)‡
Race*
Hispanic	1.05 (1.04, 1.07)‡
Black	1.07 (1.06, 1.08)‡
Other	1.07 (1.04, 1.09)‡
Clinical Characteristics
ADL Score	1.048 (1.047, 1.049)‡
CPS Score	1.028 (1.026, 1.030)‡
With Depressive	1.02 (1.01, 1.03)‡
Symptoms
Number of Diagnoses	1.01 (1.01, 1.01)‡
Prior NH Stay	1.06 (1.05, 1.07)‡
Facility Characteristics
RN hours/patient/day	0.91 (0.90, 0.93)‡
For-Profit	1.06 (1.05, 1.07)‡
Urban	1.03 (1.01, 1.05)§
Chain	0.988 (0.982, 0.994)§
Hospital based	0.87 (0.85, 0.88)‡
Occupancy Rate	1.00 (1.00, 1.001)|
Case Mix	0.53 (0.50, 0.55)‡
State†
Texas	0.95 (0.94, 0.96)‡
California	0.99 (0.99, 1.01)
Florida	0.945 (0.937, 0.954)‡
Ohio	0.987 (0.984, 0.996)|

NOTE.

^*Reference group, Whites.

^†Reference group, New York State.

Abbreviations: LOS, length of stay; ADL, activities of daily living; CPS, cognitive performance scale; NH, nursing home; IRR, incident rate ratio.

^‡p>.0001;

^§p<.001;

^|p<.01.