2.50
Hdl Handle:
http://hdl.handle.net/10755/157310
Type:
Presentation
Title:
THE CONTRACEPTIVE DECISIONMAKING QUESTIONNAIRE: PSYCHOMETRIC EVALUATION
Abstract:
THE CONTRACEPTIVE DECISIONMAKING QUESTIONNAIRE: PSYCHOMETRIC EVALUATION
Conference Sponsor:Western Institute of Nursing
Conference Year:2010
Author:Noone, Joanne, PhD, RN, FNP
P.I. Institution Name:Oregon Health and Science University
Title:Assistant Professor
Contact Address:1250 Siskiyou Boulevard, Ashland, OR, 97520, USA
Co-Authors:Tiffany L. Allen
PURPOSES/AIMS:
The purpose of this study was to develop a psychometrically sound scale to measure how women make decisions about birth control. The specific aims were to: 1) refine the Contraceptive Decision-making Questionnaire (CDQ) through evaluation of content validity and item clarity by women contraceptive users and expert family planning researchers and providers; 2) evaluate construct validity of the CDQ through an exploratory factor analysis; and 3) establish reliability of the CDQ through determination of internal consistency estimates.
RATIONALE/CONCEPTUAL BASIS/BACKGROUND:
Forty-nine per cent of the 6.4 million pregnancies in the United States that occur annually are unintended, which is well beneath the HealthyPeople 2010 target of 30% or less. Half of these unintended pregnancies occur in women who used contraception during the month they conceived. A better understanding of how women make decisions about contraception can inform providers who counsel women on the selection and use of a method.
METHODS:
Items for the CDQ were generated based upon a literature review and qualitative interviews with women regarding how they made decisions about birth control. The design for this study included two phases. Content validation and clarification of the questionnaire by six professional and six lay experts occurred in Phase 1. Experts were asked to evaluate the relevance, clarity, conciseness and comprehensiveness of the questionnaire in measuring the domain of interest. After questionnaire refinement, an exploratory factor analysis was conducted and internal consistency estimates established during Phase 2 through pilot testing in a sample of 205 contracepting women.
RESULTS:
A 40 item instrument was generated by the literature. Experts suggested three items for deletion. Four new items were suggested. 32 items were revised for clarity and to improve reading ease. A version was revised to 41 items for Phase 2 testing in 205 women. An exploratory factor analysis was performed using principle component analysis. A Kaiser-Meyer-Olkin Measure of Sampling Adequacy of .678 and a BartlettÆs test of sphericity significant at .000 supported the use of factor analysis. The scree plot and theoretical framework suggested a four factor solution. 12 items were deleted due to either poor item-to-total correlations or if they detracted from total scale reliability, resulting in 29-item final version. All remaining items loaded at .30 or higher on a factor. These four factors explained 38% of the scale variance and were analyzed according to the themes of accessibility, general properties, interpersonal influences and personal beliefs. CronbachÆs alpha for the total scale was .79. Subscale CronbachÆs alpha was .71 for accessibility, .63 for general factors, .64 for interpersonal influences, and .72 for personal beliefs. All reliability estimates were significant at p < .000.
IMPLICATIONS:
Professional and lay experts established content validity of the CDQ. RESULTS: of the factor analysis and reliability estimates support the construct validity of the scale. Factors of accessibility, general factors, interpersonal influences and personal beliefs fit within the theoretical framework. Reliability estimates for scale and subscales showed acceptable internal consistency. Next steps include a confirmatory factory analysis to further establish the psychometric properties of the CDQ.
Repository Posting Date:
26-Oct-2011
Date of Publication:
17-Oct-2011
Sponsors:
Western Institute of Nursing

Full metadata record

DC FieldValue Language
dc.typePresentationen_GB
dc.titleTHE CONTRACEPTIVE DECISIONMAKING QUESTIONNAIRE: PSYCHOMETRIC EVALUATIONen_GB
dc.identifier.urihttp://hdl.handle.net/10755/157310-
dc.description.abstract<table><tr><td colspan="2" class="item-title">THE CONTRACEPTIVE DECISIONMAKING QUESTIONNAIRE: PSYCHOMETRIC EVALUATION</td></tr><tr class="item-sponsor"><td class="label">Conference Sponsor:</td><td class="value">Western Institute of Nursing</td></tr><tr class="item-year"><td class="label">Conference Year:</td><td class="value">2010</td></tr><tr class="item-author"><td class="label">Author:</td><td class="value">Noone, Joanne, PhD, RN, FNP</td></tr><tr class="item-institute"><td class="label">P.I. Institution Name:</td><td class="value">Oregon Health and Science University</td></tr><tr class="item-author-title"><td class="label">Title:</td><td class="value">Assistant Professor</td></tr><tr class="item-address"><td class="label">Contact Address:</td><td class="value">1250 Siskiyou Boulevard, Ashland, OR, 97520, USA</td></tr><tr class="item-email"><td class="label">Email:</td><td class="value">noonej@ohsu.edu</td></tr><tr class="item-co-authors"><td class="label">Co-Authors:</td><td class="value">Tiffany L. Allen</td></tr><tr><td colspan="2" class="item-abstract">PURPOSES/AIMS:<br/>The purpose of this study was to develop a psychometrically sound scale to measure how women make decisions about birth control. The specific aims were to: 1) refine the Contraceptive Decision-making Questionnaire (CDQ) through evaluation of content validity and item clarity by women contraceptive users and expert family planning researchers and providers; 2) evaluate construct validity of the CDQ through an exploratory factor analysis; and 3) establish reliability of the CDQ through determination of internal consistency estimates. <br/>RATIONALE/CONCEPTUAL BASIS/BACKGROUND: <br/>Forty-nine per cent of the 6.4 million pregnancies in the United States that occur annually are unintended, which is well beneath the HealthyPeople 2010 target of 30% or less. Half of these unintended pregnancies occur in women who used contraception during the month they conceived. A better understanding of how women make decisions about contraception can inform providers who counsel women on the selection and use of a method. <br/>METHODS: <br/>Items for the CDQ were generated based upon a literature review and qualitative interviews with women regarding how they made decisions about birth control. The design for this study included two phases. Content validation and clarification of the questionnaire by six professional and six lay experts occurred in Phase 1. Experts were asked to evaluate the relevance, clarity, conciseness and comprehensiveness of the questionnaire in measuring the domain of interest. After questionnaire refinement, an exploratory factor analysis was conducted and internal consistency estimates established during Phase 2 through pilot testing in a sample of 205 contracepting women. <br/>RESULTS: <br/>A 40 item instrument was generated by the literature. Experts suggested three items for deletion. Four new items were suggested. 32 items were revised for clarity and to improve reading ease. A version was revised to 41 items for Phase 2 testing in 205 women. An exploratory factor analysis was performed using principle component analysis. A Kaiser-Meyer-Olkin Measure of Sampling Adequacy of .678 and a Bartlett&AElig;s test of sphericity significant at .000 supported the use of factor analysis. The scree plot and theoretical framework suggested a four factor solution. 12 items were deleted due to either poor item-to-total correlations or if they detracted from total scale reliability, resulting in 29-item final version. All remaining items loaded at .30 or higher on a factor. These four factors explained 38% of the scale variance and were analyzed according to the themes of accessibility, general properties, interpersonal influences and personal beliefs. Cronbach&AElig;s alpha for the total scale was .79. Subscale Cronbach&AElig;s alpha was .71 for accessibility, .63 for general factors, .64 for interpersonal influences, and .72 for personal beliefs. All reliability estimates were significant at p &lt; .000.<br/>IMPLICATIONS: <br/>Professional and lay experts established content validity of the CDQ. RESULTS: of the factor analysis and reliability estimates support the construct validity of the scale. Factors of accessibility, general factors, interpersonal influences and personal beliefs fit within the theoretical framework. Reliability estimates for scale and subscales showed acceptable internal consistency. Next steps include a confirmatory factory analysis to further establish the psychometric properties of the CDQ. <br/></td></tr></table>en_GB
dc.date.available2011-10-26T19:45:25Z-
dc.date.issued2011-10-17en_GB
dc.date.accessioned2011-10-26T19:45:25Z-
dc.description.sponsorshipWestern Institute of Nursingen_GB
All Items in this repository are protected by copyright, with all rights reserved, unless otherwise indicated.