Decision Aid Summary

Title Information on Mammography for Women Aged 40 and Older: A Decision Aid for Breast Cancer Screening in Canada
How to obtain Distribution through the provincial and territorial screening programs as well as through NGOs. The DA is also available on PHAC website.
Available here.
Health condition Breast Cancer
Type of decision aid Screening
Options included Start or continue having mammograms.
Do not start or continue having mammograms.
Audience Women 40 years and older. Provincial/territorial breast cancer screening programs. Health Care providers including technologists, health promotion specialists etc. Medical/nursing/radiation technology students. Health care planners/decision makers.
Developer Canadian Breast Cancer Screening Initiative
Where was it developed?
Public Health Agency of Canada
Year of last update or review 2009
Format Web, paper, PDF
Language English, French
The assessment (based on IPDAS) of this decision aid indicates that it meets:
19 out of 19 of the content criteria
7 out of 9 of the development process criteria
0 out of 2 of the effectiveness criteria


1.The decision aid describes the condition (health or other) related to the decision. Yes
2.The decision aid describes the decision that needs to be considered (the index decision). Yes
3.The decision aid lists the options (health care or other). Yes
4.The decision aid describes what happens in the natural course of the condition (health or other) if no action is taken. Yes
5.The decision aid has information about the procedures involved (e.g. what is done before, during, and after the health care option). Yes
6.The decision aid has information about the positive features of the options (e.g. benefits, advantages). Yes
7.The decision aid has information about negative features of the options (e.g. harms, side effects, disadvantages). Yes
8.The information about outcomes of options (positive and negative) includes the chances they may happen. Yes
9.The decision aid has information about what the test is designed to measure. Yes
10.The decision aid describes possible next steps based on the test results. Yes
11.The decision aid has information about the chances of disease being found with and without screening. Yes
12.The decision aid has information about detection and treatment of disease that would never have caused problems if screening had not been done. Yes
13.The decision aid presents probabilities using event rates in a defined group of people for a specified time. Yes
14.The decision aid compares probabilities (e.g. chance of a disease, benefit, harm, or side effect) of options using the same denominator. Yes
15.The decision aid compares probabilities of options over the same period of time. Yes
16.The decision aid uses the same scales in diagrams comparing options. Yes
17.The decision aid asks people to think about which positive and negative features of the options matter most to them. Yes
18.The decision aid makes it possible to compare the positive and negative features of the available options. Yes
19.The decision aid shows the negative and positive features of the options with equal detail. Yes
Development ProcessAnswer
20.Users (people who previously faced the decision) were asked what they need to prepare them to discuss a specific decision. Yes
21.The decision aid was reviewed by people who previously faced the decision who were not involved in its development and field testing. Yes
22.People who were facing the decision field tested the decision aid. Yes
23.Field testing showed that the decision aid was acceptable to users (the general public & practitioners). Yes
24.Field testing showed that people who were undecided felt that the information was presented in a balanced way. Yes
25.The decision aid provides references to scientific evidence used. Yes
26.The decision aid reports the date when it was last updated. Yes
27.The decision aid reports whether authors of the decision aid or their affiliations stand to gain or lose by choices people make after using the decision aid. No
28.The decision aid (or available technical document) reports readability levels. No
29.There is evidence that the decision aid (or one based on the same template) helps people know about the available options and their features. Unknown
30.There is evidence that the decision aid (or one based on the same template) improves the match between the features that matter most to the informed person and the option that is chosen. Unknown

Last modified: 2014-08-20.