Joan M. Griffin|Melissa R. Partin|Siamak Noorbaloochi|Joseph P. Grill|Somnath Saha|Annamay Snyder|Sean Nugent|Alisha Baines Simon|Ian M. Gralnek|Dawn Provenzale|Michelle van Ryn
Variation in Estimates of Limited Health Literacy by Assessment Instruments and Non-Response Bias
Minneapolis VA Medical Center|Minneapolis VA Medical Center|Minneapolis VA Medical Center|Minneapolis VA Medical Center|Portland VA Medical Center|Minneapolis VA Medical Center|Minneapolis VA Medical Center|Minneapolis VA Medical Center|Rambam Health Care Campus|Technion – Israel Institute of Technology|Durham VA Medical Center|University of Minnesota
paper compares estimates poor health literacy using two widely used assessment tools assesses effect nonresponse estimatesa total 4868 veterans receiving care four va medical facilities 2004 2005 stratified age facility randomly selected recruitment interviewers collected demographic information conducted assessments health literacy realm stofhla 1796 participants prevalence estimates assessment computed nonrespondents received brief proxy questionnaire demographic selfreport literacy questions assess nonresponse bias available administrative data nonparticipants also used assess nonresponse biasamong 1796 patients assessed using stofhla 8 inadequate 7 marginal skills realm 4 categorized 6th grade skills 17 78th grade skills adjusting nonresponse bias increased stofhla prevalence estimates inadequate marginal skills 93 118 respectively realm estimates 6th 78th grade skills 54 338 respectivelyestimates poor health literacy varied assessment used especially adjusting nonresponse bias researchers clinicians consider possible limitations assessment considering suitable tool purposes