biostudies-literatureUnknown7(2)Rager JB<b>Background.</b> Guidelines recommend that decision aids disclose quantitative information to patients considering colorectal cancer (CRC) screening, but the impact on patient knowledge and decision making is limited. An important challenge for assessing any disclosure involves determining when an individual has "adequate knowledge" to make a decision. <b>Methods.</b> We analyzed data from a trial that randomized 213 patients to view a decision aid about CRC screening that contained verbal information (qualitative arm) versus one containing verbal plus quantitative information (quantitative arm). We analyzed participants' answers to 8 "qualitative knowledge" questions, which did not cover the quantitative information, at baseline (T0) and after viewing the decision aid (T1). We introduceMDM policy & practice23814683221140122https://www.ebi.ac.uk/biostudies/studies/S-EPMC9703495biostudies-literatureMeasuring the Impact of Quantitative Information on Patient Understanding: Approaches for Assessing the Adequacy of Patient Knowledge about Colorectal Cancer Screening.PMC9703495Rager JBSchmidt KKSchwartz PHPerkins SMAlthouse SfalseMeasuring the Impact of Quantitative Information on Patient Understanding: Approaches for Assessing the Adequacy of Patient Knowledge about Colorectal Cancer Screening.<b>Background.</b> Guidelines recommend that decision aids disclose quantitative information to patients considering colorectal cancer (CRC) screening, but the impact on patient knowledge and decision making is limited. An important challenge for assessing any disclosure involves determining when an individual has "adequate knowledge" to make a decision. <b>Methods.</b> We analyzed data from a trial that randomized 213 patients to view a decision aid about CRC screening that contained verbal information (qualitative arm) versus one containing verbal plus quantitative information (quantitative arm). We analyzed participants' answers to 8 "qualitative knowledge" questions, which did not cover the quantitative information, at baseline (T0) and after viewing the decision aid (T1). We introduce2022-01-01T00:00:00Z2022 Jul-Dec2025-04-19T22:46:48.908Z2025-04-19T22:46:48.908ZS-EPMC97034953645231510.1177/23814683221140122