Table 1.

Characteristics of Hospitals across Chronic Obstructive Pulmonary Disease Readmission Quartiles

Hospital Characteristics	COPD Readmission Quartile				P Value
	Lowest (n = 926)	Mid-Low (n = 1,027)	Mid-High (n = 877)	Highest (n = 875)
Teaching hospital status*
Teaching, %	26	21	24	36
Non-teaching, %	74	79	76	64	<0.01
Ownership status*
Private for-profit, %	14	17	18	19
Private not-for-profit, %	66	61	61	64
Public, %	20	22	21	17	<0.01
Safety net status†
Safety net hospital, %	15	18	21	26
Non–safety net hospital, %	85	82	79	74	<0.01

Definition of abbreviation: COPD = chronic obstructive pulmonary disease.

Hospitals were divided into quartiles based on COPD readmission rates.

^*Data not available for lowest (n = 8), mid-low (n = 6), mid-high (n = 7), and highest (n = 4).

^†Data not available for lowest (n = 149), mid-low (n = 291), mid-high (n = 216), and highest (n = 121).