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The validity of self-reported cancer in an Australian population study

Loh, Venurs, Harding, Jessica, Koshkina, Vira, Barr, Elizabeth L. M., Shaw, Jonathan and Magliano, Dianna (2014). The validity of self-reported cancer in an Australian population study. Australian and New Zealand Journal of Public Health,38(1):35-38.

Document type: Journal Article
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IRMA ID 75039815xPUB340
Title The validity of self-reported cancer in an Australian population study
Author Loh, Venurs
Harding, Jessica
Koshkina, Vira
Barr, Elizabeth L. M.
Shaw, Jonathan
Magliano, Dianna
Journal Name Australian and New Zealand Journal of Public Health
Publication Date 2014
Volume Number 38
Issue Number 1
ISSN 1326-0200   (check CDU catalogue  open catalogue search in new window)
Scopus ID 2-s2.0-84893564612
Start Page 35
End Page 38
Total Pages 4
Place of Publication Australia
Publisher Wiley-Blackwell Publishing Asia
HERDC Category C1 - Journal Article (DIISR)
Abstract Objective: The aim of this study is to determine the validity of self-reported cancer data by comparing it to the Australian Cancer Database (ACD).
Methods:
Self-reported data were obtained from the Australian Diabetes, Obesity and Lifestyle (AusDiab) study, which were then linked to the ACD up until 31 December 2010. Positive predictive value, negative predictive value, sensitivity and specificity were calculated. Cohen's kappa coefficient (ĸ) was also calculated to assess the agreement between self-reported cancer and the ACD. Logistic regression was used to examine the determinants associated with false negative and false positive reporting.
Results:
The overall sensitivity of self-report cancer was 71.1%, and sensitivities showed great variation by cancer site. Higher sensitivities were observed for breast (90.7%), bowel (77.8%) and prostate (77.1%) cancers, whereas the lowest sensitivity was observed for melanoma of the skin (36.9%). Similarly, the kappa coefficient analysis showed substantial agreement for self-reported breast cancer (ĸ= 0.79) and moderate agreement for melanoma (ĸ= 0.45) against the ACD. Years since cancer diagnosis and older age were associated with false negative reporting and older age was associated with false positive reporting.
Conclusions and implications:
The use of self-reported cancer to collect cancer outcomes has varying reliability, depending on cancer type and population. The findings presented here may assist medical researchers in making informed decisions when conducting research using self-reported cancer data in Australia where the acquisition of registry data is not feasible.
Keywords Sensitivity
Specificity
Cancer
Self-report
DOI http://dx.doi.org/10.1111/1753-6405.12164   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
Description for Link Link to publisher's version
URL http://onlinelibrary.wiley.com/doi/10.1111/1753-6405.12164/abstract
 
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