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Table 1 Characteristics of ACOs with least and greatest PCP focus

From: Primary care focus and utilization in the Medicare shared savings program accountable care organizations

Mean (SD)

Least PCP focus

Greatest PCP focus

p-value

Number assigned beneficiaries

18,504 (16,137)

14,751 (19,179)

0.27

Mean length of performance period (months)

15.5 (3.5)

15.6 (3.6)

0.94

Percentage of minority beneficiaries

13.8 (13.7)

24.5 (23.5)

0.004

Mean percentage of ESRD patients

1.01 (0.7)

1.26 (0.8)

0.09

Mean percentage of disabled patients

15.2 (8.8)

15.7 (6.2)

0.73

Mean percentage of dual-eligible beneficiaries

6.3 (5.9)

14.1 (18.7)

0.004

Rural (%)

3.6

7.3

0.40

Census Division (%)

  

0.01

 New England

18.2

1.8

 

 Middle Atlantic

20.0

10.9

 

 East North Central

7.3

20.0

 

 West North Central

5.5

9.1

 

 South Atlantic

23.6

23.6

 

 East South Central

5.5

3.6

 

 West South Central

7.3

14.6

 

 Mountain

9.1

1.8

 

 Pacific

3.6

9.1

 

 Puerto Rico

0.0

5.5

 
  1. ESRD End-stage renal disease