Stepwise Strategy to Improve CANcer Screening Adherence: Cervical Cancer

The secondary objectives will be the following: 1. To test the non-inferiority of interventions based on step 1a and step 1 (1a+1b), considering a non-inferiority limit of 5%; 2. To test the superiority of the specific components of the multistage intervention corresponding to step 2 and step 3; 3. To quantify the differences in adherence to cervical cancer screening, for interventions based on step 1 (1a+1b) and multistage interventions based on steps 1 and 2 and steps 1 to 3, between: 1. Urban and rural areas; 2. Younger and older population; 3. Deprived and wealthy population; 4. Never vs. ever users of screening; 5. History of regular vs. irregular participation in screening programs. 4. To quantify the differences in adherence to cervical cancer screening when using a positive or a neutral content of text messages and automatic phone calls, in step 1; 5. To estimate the proportion of women who were performing cervical cancer screening in private health care services who started to be screened in an organized cervical cancer screening program, after a nurse face-to-face appointment at their primary care unit. Intention-to-treat analysis will be used as primary strategy for all comparisons between interventions and control. Secondary per-protocol analysis will also be conducted. Binary logistic regression may be used to control for confounding, or in secondary analyses of the isolate effects of steps 1a, 2 and 3.