A theoretical framework for measuring knowledge in screening decision aid trials

Sian K Smith; Alexandra Barratt; Lyndal Trevena; Judy M Simpson; Jesse Jansen; Kirsten J McCaffery

doi:10.1016/j.pec.2012.07.009

A theoretical framework for measuring knowledge in screening decision aid trials

Sian K Smith
, Alexandra Barratt
, Lyndal Trevena
, Judy M Simpson
, Jesse Jansen
, Kirsten J McCaffery

University of New South Wales
University of Sydney

Research output: Contribution to journal › Article › peer-review

24 Citations (SciVal)

Abstract

OBJECTIVE: To describe a theoretical framework for assessing knowledge about the possible outcomes of participating in bowel cancer screening for the faecal occult blood test.

METHODS: The content of the knowledge measure was based on the UK General Medical Council's screening guidelines and a theory-based approach to assessing gist knowledge (Fuzzy Trace Theory). It comprised conceptual and numeric questions to assess knowledge of the underlying construct (e.g. false positive concept) and the approximate numbers affected (e.g. likelihood of a false positive). The measure was used in a randomised controlled trial involving 530 adults with low education, to compare the impact of a bowel screening decision aid with a screening information booklet developed for the Australian Government National Bowel Cancer Screening Program.

RESULTS: The numeric knowledge scale was particularly responsive to the effects of the decision aid; at follow-up decision aid participants' numeric knowledge was significantly greater than the controls (P<0.001). This contrasts with the conceptual knowledge scale which improved significantly in both groups from baseline to follow-up (P<0.001).

CONCLUSION: Our theory-based knowledge measure was responsive to change in conceptual knowledge and to the effect on numeric knowledge of a decision aid.

PRACTICE IMPLICATIONS: This theoretical framework has the potential to guide the development of knowledge measures in other screening settings.

Original language	English
Pages (from-to)	330-6
Number of pages	7
Journal	Patient Education and Counseling
Volume	89
Issue number	2
Early online date	4 Aug 2012
DOIs	https://doi.org/10.1016/j.pec.2012.07.009
Publication status	Published - Nov 2012

Bibliographical note

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 3 Good Health and Well-being

Keywords

Adult
Australia
Choice Behavior
Decision Making
Decision Support Techniques
Educational Status
Empirical Research
Feces
Follow-Up Studies
Fuzzy Logic
Health Knowledge, Attitudes, Practice
Humans
Informed Consent
Intestinal Neoplasms/diagnosis
Male
Mass Screening
Occult Blood
Pamphlets
Patient Acceptance of Health Care
Patient Education as Topic/methods
Patient Participation

Access to Document

10.1016/j.pec.2012.07.009

Cite this

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title = "A theoretical framework for measuring knowledge in screening decision aid trials",

abstract = "OBJECTIVE: To describe a theoretical framework for assessing knowledge about the possible outcomes of participating in bowel cancer screening for the faecal occult blood test.METHODS: The content of the knowledge measure was based on the UK General Medical Council's screening guidelines and a theory-based approach to assessing gist knowledge (Fuzzy Trace Theory). It comprised conceptual and numeric questions to assess knowledge of the underlying construct (e.g. false positive concept) and the approximate numbers affected (e.g. likelihood of a false positive). The measure was used in a randomised controlled trial involving 530 adults with low education, to compare the impact of a bowel screening decision aid with a screening information booklet developed for the Australian Government National Bowel Cancer Screening Program.RESULTS: The numeric knowledge scale was particularly responsive to the effects of the decision aid; at follow-up decision aid participants' numeric knowledge was significantly greater than the controls (P<0.001). This contrasts with the conceptual knowledge scale which improved significantly in both groups from baseline to follow-up (P<0.001).CONCLUSION: Our theory-based knowledge measure was responsive to change in conceptual knowledge and to the effect on numeric knowledge of a decision aid.PRACTICE IMPLICATIONS: This theoretical framework has the potential to guide the development of knowledge measures in other screening settings.",

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year = "2012",

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doi = "10.1016/j.pec.2012.07.009",

language = "English",

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AU - Smith, Sian K

AU - Barratt, Alexandra

AU - Trevena, Lyndal

AU - Simpson, Judy M

AU - Jansen, Jesse

AU - McCaffery, Kirsten J

PY - 2012/11

Y1 - 2012/11

N2 - OBJECTIVE: To describe a theoretical framework for assessing knowledge about the possible outcomes of participating in bowel cancer screening for the faecal occult blood test.METHODS: The content of the knowledge measure was based on the UK General Medical Council's screening guidelines and a theory-based approach to assessing gist knowledge (Fuzzy Trace Theory). It comprised conceptual and numeric questions to assess knowledge of the underlying construct (e.g. false positive concept) and the approximate numbers affected (e.g. likelihood of a false positive). The measure was used in a randomised controlled trial involving 530 adults with low education, to compare the impact of a bowel screening decision aid with a screening information booklet developed for the Australian Government National Bowel Cancer Screening Program.RESULTS: The numeric knowledge scale was particularly responsive to the effects of the decision aid; at follow-up decision aid participants' numeric knowledge was significantly greater than the controls (P<0.001). This contrasts with the conceptual knowledge scale which improved significantly in both groups from baseline to follow-up (P<0.001).CONCLUSION: Our theory-based knowledge measure was responsive to change in conceptual knowledge and to the effect on numeric knowledge of a decision aid.PRACTICE IMPLICATIONS: This theoretical framework has the potential to guide the development of knowledge measures in other screening settings.

AB - OBJECTIVE: To describe a theoretical framework for assessing knowledge about the possible outcomes of participating in bowel cancer screening for the faecal occult blood test.METHODS: The content of the knowledge measure was based on the UK General Medical Council's screening guidelines and a theory-based approach to assessing gist knowledge (Fuzzy Trace Theory). It comprised conceptual and numeric questions to assess knowledge of the underlying construct (e.g. false positive concept) and the approximate numbers affected (e.g. likelihood of a false positive). The measure was used in a randomised controlled trial involving 530 adults with low education, to compare the impact of a bowel screening decision aid with a screening information booklet developed for the Australian Government National Bowel Cancer Screening Program.RESULTS: The numeric knowledge scale was particularly responsive to the effects of the decision aid; at follow-up decision aid participants' numeric knowledge was significantly greater than the controls (P<0.001). This contrasts with the conceptual knowledge scale which improved significantly in both groups from baseline to follow-up (P<0.001).CONCLUSION: Our theory-based knowledge measure was responsive to change in conceptual knowledge and to the effect on numeric knowledge of a decision aid.PRACTICE IMPLICATIONS: This theoretical framework has the potential to guide the development of knowledge measures in other screening settings.

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KW - Informed Consent

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KW - Pamphlets

KW - Patient Acceptance of Health Care

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A theoretical framework for measuring knowledge in screening decision aid trials

Abstract

Bibliographical note

UN SDGs

Keywords

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