Table 4: Two-tailed chi-square significance test evaluating the response rate to the intervention IV2 as a function of the number of phone calls in the intervention period.

Breast cancer patients

Initial value

Result:

not successful

p-value

First call

(N=23)

23/176

14/176

p=0.12

(not significant)

Second call

(N=8)

8/23

5/23

p=0.33

(not significant)