PMID- 25952743 OWN - NLM STAT- MEDLINE DCOM- 20160826 LR - 20240323 IS - 1552-681X (Electronic) IS - 0272-989X (Print) IS - 0272-989X (Linking) VI - 35 IP - 8 DP - 2015 Nov TI - Presenting Numeric Information with Percentages and Descriptive Risk Labels: A Randomized Trial. PG - 937-47 LID - 10.1177/0272989X15584922 [doi] AB - BACKGROUND: Previous research demonstrated that providing (v. not providing) numeric information about the adverse effects (AEs) of medications increased comprehension and willingness to use medication but left open the question about which numeric format is best. The objective was to determine which of 4 tested formats (percentage, frequency, percentage + risk label, frequency + risk label) maximizes comprehension and willingness to use medication across age and numeracy levels. METHODS: In a cross-sectional internet survey (N = 368; American Life Panel, 15 May 2008 to 18 June 2008), respondents were presented with a hypothetical prescription medication for high cholesterol. AE likelihoods were described using 1 of 4 tested formats. Main outcome measures were risk comprehension (ability to identify AE likelihood from a table) and willingness to use the medication (7-point scale; not likely = 0, very likely = 6). RESULTS: The percentage + risk label format resulted in the highest comprehension and willingness to use the medication compared with the other 3 formats (mean comprehension in percentage + risk label format = 95% v. mean across the other 3 formats = 81%; mean willingness = 3.3 v. 2.95, respectively). Comprehension differences between percentage and frequency formats were smaller among the less numerate. Willingness to use medication depended less on age and numeracy when labels were used. Generalizability is limited by the use of a sample that was older, more educated, and better off financially than national averages. CONCLUSIONS: Providing numeric AE-likelihood information in a percentage format with risk labels is likely to increase risk comprehension and willingness to use a medication compared with other numeric formats. CI - (c) The Author(s) 2015. FAU - Sinayev, Aleksandr AU - Sinayev A AD - Ohio State University, Columbus, OH (AS, EP, MT) FAU - Peters, Ellen AU - Peters E AD - Ohio State University, Columbus, OH (AS, EP, MT) FAU - Tusler, Martin AU - Tusler M AD - Ohio State University, Columbus, OH (AS, EP, MT) FAU - Fraenkel, Liana AU - Fraenkel L AD - Yale School of Medicine, New Haven, CT (LF). LA - eng GR - AR060231-01/AR/NIAMS NIH HHS/United States GR - K24 AR060231/AR/NIAMS NIH HHS/United States GR - P30 AG024962/AG/NIA NIH HHS/United States GR - R01 AG020717/AG/NIA NIH HHS/United States GR - R01AG20717/AG/NIA NIH HHS/United States PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20150507 PL - United States TA - Med Decis Making JT - Medical decision making : an international journal of the Society for Medical Decision Making JID - 8109073 RN - 0 (Prescription Drugs) SB - IM MH - Adolescent MH - Adult MH - Age Distribution MH - Aged MH - Aged, 80 and over MH - Communication MH - Comprehension MH - *Decision Making MH - Drug Labeling MH - *Drug-Related Side Effects and Adverse Reactions MH - Female MH - *Health Knowledge, Attitudes, Practice MH - Humans MH - Hypercholesterolemia MH - Internet MH - Logistic Models MH - Male MH - Middle Aged MH - *Patient Medication Knowledge MH - Prescription Drugs MH - Risk Assessment MH - Young Adult PMC - PMC4592369 MID - NIHMS679550 OTO - NOTNLM OT - adherence OT - aging OT - informed decision making OT - numeracy OT - pharmaceutical decision making OT - risk communication OT - risk comprehension OT - statins EDAT- 2015/05/09 06:00 MHDA- 2016/08/27 06:00 PMCR- 2016/11/01 CRDT- 2015/05/09 06:00 PHST- 2014/10/08 00:00 [received] PHST- 2015/04/08 00:00 [accepted] PHST- 2015/05/09 06:00 [entrez] PHST- 2015/05/09 06:00 [pubmed] PHST- 2016/08/27 06:00 [medline] PHST- 2016/11/01 00:00 [pmc-release] AID - 0272989X15584922 [pii] AID - 10.1177/0272989X15584922 [doi] PST - ppublish SO - Med Decis Making. 2015 Nov;35(8):937-47. doi: 10.1177/0272989X15584922. Epub 2015 May 7.