Certain performance values arising from mammographic test set readings correlate well with clinical audit

Introduction Test sets have been increasingly utilised to augment clinical audit in breast screening programmes; however, their relationship has never been satisfactorily understood. This study examined the relationship between mammographic test set performance and clinical audit data. Methods Clini...

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Vydáno v:Journal of medical imaging and radiation oncology Ročník 59; číslo 4; s. 403 - 410
Hlavní autoři: Soh, BaoLin Pauline, Lee, Warwick Bruce, Mello-Thoms, Claudia, Tapia, Kriscia, Ryan, John, Hung, Wai Tak, Thompson, Graham, Heard, Rob, Brennan, Patrick
Médium: Journal Article
Jazyk:angličtina
Vydáno: Australia Blackwell Publishing Ltd 01.08.2015
Wiley Subscription Services, Inc
Témata:
Audits
Australia
breast
Breast cancer
Breast Neoplasms - diagnostic imaging
clinical audit
Clinical Competence - standards
Clinical Competence - statistics & numerical data
Early Detection of Cancer - standards
Early Detection of Cancer - statistics & numerical data
Female
Humans
Image Interpretation, Computer-Assisted - standards
Mammography
Mammography - standards
Mammography - statistics & numerical data
Medical Audit
observer performance
Observer Variation
Quality Assurance, Health Care - standards
Reproducibility of Results
Sensitivity and Specificity
Statistics as Topic
test set
Australia
clinical audit
test set
mammography
breast
observer performance
ISSN:1754-9477, 1754-9485, 1754-9485
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Shrnutí:Introduction Test sets have been increasingly utilised to augment clinical audit in breast screening programmes; however, their relationship has never been satisfactorily understood. This study examined the relationship between mammographic test set performance and clinical audit data. Methods Clinical audit data over a 2‐year period was generated for each of 20 radiologists. Sixty mammographic examinations, consisting of 40 normal and 20 cancer cases, formed the test set. Readers located any identifiable cancer, and levels of confidence were scored from 2 to 5, where a score of 3 and above is considered a recall rating. Jackknifing free response operating characteristic (JAFROC) figure‐of‐merit (FOM), location sensitivity and specificity were calculated for individual readers and then compared with clinical audit values using Spearman's rho. Results JAFROC FOM showed significant correlations to: recall rate at a first round of screening (r = 0.51; P = 0.02); rate of small invasive cancers per 10 000 reads (r = 0.5; P = 0.02); percentage of all cancers read that were not recalled (r = −0.51; P = 0.02); and sensitivity (r = 0.51; P = 0.02). Location sensitivity demonstrated significant correlations with: rate of small invasive cancers per 10 000 reads (r = 0.46; P = 0.04); rate of DCIS (ductal carcinoma in situ) per 10 000 reads (r = 0.44; P = 0.05); detection rate of all invasive cancers and DCIS per 10 000 reads (r = 0.54; P = 0.01); percentage of all cancers read that were not recalled (r = −0.57; P = 0.009); and sensitivity (r = 0.57; P = 0.009). No other significant relationships were noted. Conclusion Performance indicators from test set demonstrate significant correlations with specific aspects of clinical performance, although caution needs to be exercised when generalising test set specificity to the clinical situation.
Bibliografie:istex:233F4C3200B55CBD2E188C71593F54F284F4210E
ArticleID:JMIRO12301
National Breast Cancer Foundation
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ISSN:1754-9477
1754-9485
1754-9485
DOI:10.1111/1754-9485.12301