Table 5: 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 confirmation period.

Breast cancer patients

Initial value

Result:

not successful

p-value

First call

(N=42)

42/172

20/172

p=0.02

(significant)

Second call

(N=9)

9/42

5/42

p=0.24

(not significant)