Table 3

Intervention Strategy Types by Intervention Year

Intervention strategy typea

Year 11

Year 22

Year 33


a. HP→IND

27 (32%)

17 (29%)

27 (38%)

b. HP→X→IND

41 (48%)

35 (59%)

39 (54%)

c. HP→[X-X]→IND

16 (19%)

7 (12%)

6 (8%)

Total

84

59

72

Chi-square 2 )df = 2

11.2

20.5

23.2

p value

<0.01

<0.0001

<0.0001


aIncludes repeated activities across intervention years

The following differences in proportions are statistically significant:

1 a-b p < 0.05 and b-c p < 0.05 and b-c p < 0.0001

2 a-c p < 0.05 and a-b p < 0.01 and b-c p < 0.0001

3 a-c, b-c p < 0.0001

Cargo et al. BMC Public Health 2011 11:299   doi:10.1186/1471-2458-11-299

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