Table 1.

Patient, Facility, and Market Characteristics of Study Sample

Characteristic	Mean or %	95% Confidence Interval
Patient Characteristics
Age (Mean)	79.9	79.0 - 80.0
Female (%)	60.1	59.9 - 60.3
White (%)	81.2	80.4 - 82.0
Acuity index (Mean)	12.1	12.1 - 12.2
Medicaid (%)	62.4	62.0 - 62.8
Medicare (%)	14.7	14.4 - 14.9
Facility Characteristics
Nurse staffing ratio (Mean)	0.35	0.34 - 0.36
Direct care hours per patient day (Mean)	3.65	3.63 - 3.67
Presence of advanced practitioners (%)	45.6	44.6 - 46.7
Part of a chain (%)	56.7	55.8 - 57.7
For-profit ownership status (%)	69.0	68.1 - 70.0
Market Characteristic
Herfindahl-Hirschman Index (Mean)	456.0	437.4 - 474.8