BACKGROUND: Information on the validity of self-reported cases of stroke and acute myocardial infarction (AMI) is varied. The aim of this study was to assess the validity and agreement of self-reported prevalent cases of stroke and AMI in the Spanish cohort of the European Prospective Investigation into Cancer and Nutrition (EPIC). METHODS: At recruitment, 1992-1996, and in the follow-up (3 years after recruitment), each participant in the Spanish EPIC cohort (15,630 men and 25,808 women) was asked if a doctor had ever said that they had had a stroke or AMI, and the results were compared with information available in medical records. Validity of self-reported prevalent cases of stroke and AMI was examined by calculating sensitivity, specificity, positive predictive values and κ statistics. RESULTS: The sensitivity of self-reported prevalent cases of stroke was 81.3% and that for AMI was 97.7%. The positive predictive value was 22.2% and 60.7% for stroke and AMI, respectively, whereas specificity was very high (>99%) for both diseases. The agreement between self-report questionnaire results and medical records was substantial (κ=0.75) for AMI but not for stroke (κ=0.35). CONCLUSION: Self-reported information on stroke and AMI included in the EPIC questionnaire is a valid instrument for the assessment of AMI disease but should be used with caution in stroke.
BACKGROUND: Information on the validity of self-reported cases of stroke and acute myocardial infarction (AMI) is varied. The aim of this study was to assess the validity and agreement of self-reported prevalent cases of stroke and AMI in the Spanish cohort of the European Prospective Investigation into Cancer and Nutrition (EPIC). METHODS: At recruitment, 1992-1996, and in the follow-up (3 years after recruitment), each participant in the Spanish EPIC cohort (15,630 men and 25,808 women) was asked if a doctor had ever said that they had had a stroke or AMI, and the results were compared with information available in medical records. Validity of self-reported prevalent cases of stroke and AMI was examined by calculating sensitivity, specificity, positive predictive values and κ statistics. RESULTS: The sensitivity of self-reported prevalent cases of stroke was 81.3% and that for AMI was 97.7%. The positive predictive value was 22.2% and 60.7% for stroke and AMI, respectively, whereas specificity was very high (>99%) for both diseases. The agreement between self-report questionnaire results and medical records was substantial (κ=0.75) for AMI but not for stroke (κ=0.35). CONCLUSION: Self-reported information on stroke and AMI included in the EPIC questionnaire is a valid instrument for the assessment of AMI disease but should be used with caution in stroke.
Authors: George Howard; Brett M Kissela; Dawn O Kleindorfer; Leslie A McClure; Elsayed Z Soliman; Suzanne E Judd; J David Rhodes; Mary Cushman; Claudia S Moy; Kara A Sands; Virginia J Howard Journal: Neurology Date: 2016-01-20 Impact factor: 9.910
Authors: Mahboob Rahman; Dawei Xie; Harold I Feldman; Alan S Go; Jiang He; John W Kusek; James Lash; Edgar R Miller; Akinlolu Ojo; Qiang Pan; Stephen L Seliger; Susan Steigerwalt; Ray R Townsend Journal: Am J Nephrol Date: 2014-11-11 Impact factor: 3.754
Authors: Karolina Szerencsi; Ludovic van Amelsvoort; Martin Prins; Ijmert Kant Journal: Int Arch Occup Environ Health Date: 2013-02-01 Impact factor: 3.015