title: Development of a reliable and valid questionnaire to test the prostate cancer knowledge of men with the disease.
abstract: Several prostate cancer knowledge questionnaires exist but none have demonstrated both reliability and validity when used by men with the disease. This study aims to develop a reliable and valid knowledge questionnaire for men with prostate cancer. After developing a 40-item Prostate Cancer Knowledge Questionnaire (PCKQ-40) in phase I, it was piloted in phase II with 391 medical students. This resulted in the reduction of the tool by removing items of poor discriminatory value. A balance between true and false items and content domains was also maintained in the reduced scale. The PCKQ-12 had a moderate internal consistency. Phase III of the study assessed the reliability and construct validity of the tool by measuring the prostate cancer knowledge levels of men with prostate cancer (n=28), men with other cancers (n=10) and men without cancer (n=84). Men with prostate cancer achieved significantly higher PCKQ-12 scores compared with men without cancer, supporting the construct validity of the tool. The tool's reliability was also confirmed with a moderate internal consistency. This study provides some evidence for the reliability and validity of the PCKQ-12 and supports its use with men with prostate cancer in further research.
authors: Institute of Clinical Education, Peninsula Medical School, Tamar Science Park, ITTC Building, Davy Road, Plymouth PL6 8BX, UK. charlotte.rees@pms.ac.uk
authors: Charlotte
authors: C
authors: Rees
authors: Reem
authors: R
authors: Abed
authors: Charlotte
authors: C
authors: Sheard
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D016002:Discriminant Analysis; D004521:Educational Measurement / Q000379:methods* / Q000592:standards; D005260:Female; D006801:Humans; D019359:Knowledge; D008297:Male; D008875:Middle Aged; D010353:Patient Education as Topic / Q000592:standards*; D011471:Prostatic Neoplasms / Q000175:diagnosis / Q000209:etiology / Q000628:therapy; D011594:Psychometrics; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires / Q000592:standards*; D006113:United Kingdom