Candace D. McNaughton|Kerri L. Cavanaugh|Sunil Kripalani|Russell L. Rothman|Kenneth A. Wallston
Validation of a Short, 3-Item Version of the Subjective Numeracy Scale
Vanderbilt University|Vanderbilt University|Vanderbilt University|Vanderbilt University|Vanderbilt University
background objective efficiency scale design reduces respondent burden brief reliable measure numeracy may provide useful research tool eligible integration large epidemiological studies clinical trials goal validate 3item version subjective numeracy scale sns3 design setting examined 7 separate crosssectional data sets patients emergency department n 208 clinic n 205 hospital n 460 n 2053 patients chronic kidney disease n 147 diabetes n 318 hemodialysis n 143 measurements internal reliability sns3 assessed cronbachs criterion validity determined nonparametric correlations sns3 sns8 measures numeracy construct validity determined correlations measures health literacy education results sns3 good internal reliability median cronbachs 078 correlated highly full sns median 091 sns3 significantly correlated measures numeracy eg median 057 wide range achievement test 4 health literacy eg median 035 shortened test functional health literacy adults education median 041 providing good evidence criterion construct validity conclusion sns3 sufficiently reliable valid used measure subjective numeracy