Analysis of a Mammography Teaching Program Based on an Affordance Design Model

Luo, Ping; Eikman, Edward A.; Kealy, William A.; Wei, Qian

doi:10.1016/j.acra.2006.08.016

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…Radiologists have expressed different levels of perceived competence in interpreting mammograms [10, 11], but this factor has not been fully investigated. Studies show that in other specialties, physicians and medical students who are more confident in their skills and knowledge have better performance in surgical skills, venous catheterization, and musculoskeletal clinical training [12–14].…”

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confidence: 99%

Is Confidence of Mammographic Assessment a Good Predictor of Accuracy?

Geller

Bogart

Carney

et al. 2012

American Journal of Roentgenology

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OBJECTIVE Interpretive accuracy varies among radiologists, especially in mammography. This study examines the relationship between radiologists’ confidence in their assessments and their accuracy in interpreting mammograms. MATERIALS AND METHODS In this study, 119 community radiologists interpreted 109 expert-defined screening mammography examinations in test sets and rated their confidence in their assessment for each case. They also provided a global assessment of their ability to interpret mammograms. Positive predictive value (PPV) and negative predictive value (NPV) were modeled as functions of self-rated confidence on each examination using log-linear regression estimated with generalized estimating equations. Reference measures were cancer status and expert-defined need for recall. Effect modification by weekly mammography volume was examined. RESULTS Radiologists who self-reported higher global interpretive ability tended to interpret more mammograms per week (p = 0.08), were more likely to specialize (p = 0.02) and to have completed a fellowship in breast or women’s imaging (p = 0.05), and had a higher PPV for cancer detection (p = 0.01). Examinations for which low-volume radiologists were “very confident” had a PPV of 2.93 times (95% CI, 2.01–4.27) higher than examinations they rated with neutral confidence. Trends of increasing NPVs with increasing confidence were significant for low-volume radiologists relative to noncancers (p = 0.01) and expert nonrecalls (p < 0.001). A trend of significantly increasing NPVs existed for high-volume radiologists relative to expert nonrecall (p = 0.02) but not relative to noncancer status (p = 0.32). CONCLUSION Confidence in mammography assessments was associated with better accuracy, especially for low-volume readers. Asking for a second opinion when confidence in an assessment is low may increase accuracy.

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confidence: 99%

Is Confidence of Mammographic Assessment a Good Predictor of Accuracy?

Geller

Bogart

Carney

et al. 2012

American Journal of Roentgenology

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“…They proposed an experimental method to study object affordances showing how the method can be applied to the de-sign of concrete physical interface artifacts. Ping et al [12] used the affordance design model as theoretical basis and methodological underpinning to evaluate an e-learning program on mammogram reading. Hartson [9] explored the relationship between the affordance types associated with usability problems and provided examples and a methodology scheme for practitioners on how to identify affordances issues involved in flawed design cases.…”

Section: Practical Dimensions Of Affordancesmentioning

confidence: 99%

Affordances in Conversational Interactions with Multimodal QA Systems

Niculescu

2008

Lecture Notes in Computer Science

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Abstract. Implementation of adequate conversational structures is a key issue in developing successful interactive user interfaces. A way of testing the adequacy of the structures is to prove the correct orientation of each communicative action towards a preceding action. We refer to this orientation leading to a certain response as the affordance of the communicative action. In this paper we present a case study where affordances of implemented conversational structures (including verbal and graphical elements) in a multimodal medical QA system are identified applying Conversation Analysis (CA) tools and tested using the Cognitive Walkthrough (CW) method. The CW method was modified to fit the conversational approach and tested with five expert evaluators. Results showed that the affordance analysis helps detecting inefficient constructions leading to disruptions in the dialog flow, spots unnecessary functions and provides important insights on systems easy-of-use.

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What Role Do Cognitive Processes Play in Assessing Quality or Quality-of-Life?

Barofsky

2011

Quality

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Analysis of a Mammography Teaching Program Based on an Affordance Design Model

Cited by 5 publications

References 25 publications

Is Confidence of Mammographic Assessment a Good Predictor of Accuracy?

Is Confidence of Mammographic Assessment a Good Predictor of Accuracy?

Affordances in Conversational Interactions with Multimodal QA Systems

What Role Do Cognitive Processes Play in Assessing Quality or Quality-of-Life?

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