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Table 1 Sociodemographic variables used in balancing territories

From: Use of a Geographic Information System to create treatment groups for group-randomized community trials: The Minnesota Heart Health Program

Territory

Population

Health systems

Clinics

Agea

Educationb

1

113,130

2

12

29.8%

20.6%

2

101,354

3

7

33.9%

23.0%

3

66,044

2

7

43.7%

32.1%

4

105,208

2

8

36.6%

20.8%

5

122,163

3

10

29.1%

17.7%

6

56,200

4

12

59.0%

36.7%

7

99,234

5

16

37.1%

21.1%

8

108,314

4

8

36.0%

20.5%

9

85,959

4

11

41.3%

23.8%

10

105,068

3

8

35.3%

20.0%

11

100,036

3

13

36.8%

21.7%

12

87,645

5

12

39.7%

24.1%

13

96,459

4

9

35.6%

21.0%

14

92,863

4

21

37.9%

22.1%

15

82,760

4

7

38.8%

25.2%

16

83,813

4

18

41.6%

24.7%

17

98,259

3

10

35.8%

22.0%

18

99,767

4

22

38.3%

21.1%

19

129,107

4

9

28.3%

18.7%

20

115,249

3

9

30.8%

19.5%

21

70,827

5

13

44.7%

29.1%

22

98,525

3

11

35.8%

22.2%

23

63,611

3

9

53.0%

33.8%

24

94,754

3

5

33.8%

23.4%

  1. aPrevalence of men aged 45–79 years and women aged 55–79 years
  2. bPrevalence of men aged 45–79 years and women aged 55–79 years with at least some college education