Journal of Hebei Medical University

Previous Articles     Next Articles

Questionnaire on health literacy of infectious diseases based on item response theory

  

  1. 1.Department of Epidemiology and Biostatistics, the School of Public Health, Peking University,
    Beijing 100191, China；2.Department of Infectious and Endemic Disease Control, Haidian District
    Center for Disease Control and Prevention, Beijing 100094, China
  • Online:2016-08-25 Published:2016-09-01

PDF (PC)

330

Abstract: [
Abstract ] Objective Toanalyzetheitemsofthequestionnaireonhealthliteracyregarding
infectiousdiseasesinresidentsinBeijing'usingitemresponsetheory ( IRT ) .Methods Datawas
collectedfromthesurveyonhealthliteracyregardinginfectiousdiseasesofresidentswholivedin
Haidiandistrict , Beijing.Thethree-dimensionalquestionnaireidentifiedconceptualknowledge
andattitudestowardsinfectiousdiseases ; lifestyleandhealthbehavior ; andhealth-relatedskills.
Three-parameterlogisticmodelwasusedtofitthesampleandtocalculatethediscrimination ,
difficultyandguessingparameterofeachitem.Results Sinceeachdimensionofthequestionnaire
satisfiedtheunidimensionalassumption , IRTcouldbeappliedtoexecuteitemanalysis.Among
thethreedimensions , therewere70. 0% , 90. 9% and0% oftheitemdiscriminationparameters
lyingintherationaldomainat ( 0.5 , 2 ) respectively , whilerestofthemhadlargerdiscrimination
values.Alltheitem difficultyparameterswerewithinthereasonablerangeof ( -3 , 3 ) .The
reasonablevalueintervalofguessingparameterwas ( 0 , 0.2 ) .Fordifferentdimensions , there
were70.0% , 72.7%and100%itemguessingparameterfitinthisrange.Themaximumvalueof
theguessingparameterwas0.352.Conclusion Mostoftheitemsinthequestionnairehad acceptablediscriminations.Onlyfewitemshadexcessivediscriminationlevelsandmostlyexisted
inthehealth-relatedskillsdimension.Thedifficultiesofalltheitemswereinamediumtoslightly
lowerlevel , whichwasreasonable.Guessingbehavioronlyhappenedt

Key words: health literacy； infectious diseases, questionnaires； item response theory