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Submitted: 05 May 2018
Revision: 22 May 2018
Accepted: 22 May 2018
ePublished: 07 Jul 2018
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Health Promot Perspect. 2018;8(3): 215-224.
doi: 10.15171/hpp.2018.29
PMID: 30087845
PMCID: PMC6064753
Scopus ID: 85061186773
WOSID: 000442828000007
  Abstract View: 664
  PDF Download: 422
  Full Text View: 2

Original Article

Designation and psychometric properties of the Short Form Postpartum Quality of Life Questionnaire (SF-PQOL): an application of multidimensional item response theory and genetic algorithm

Fariba Nikan 1, Mohammad Asghari Jafarabadi 2,3 * ORCID logo, Sakineh Mohammad-Alizadeh-Charandabi 4, Mojgan Mirghafourvand 5 *

1 Students Research Committee, Faculty of Nursing and Midwifery, Tabriz University of Medical Sciences, Tabriz, Iran
2 Road Traffc Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
3 Department of Statistics and Epidemiology, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
4 Social determinants of health research center, Department of Midwifery, Faculty of Nursing and Midwifery, Tabriz University of Medical Sciences, Tabriz, Iran
5 Department of Midwifery, Faculty of Nursing and Midwifery, Tabriz University of Medical Sciences, Tabriz, Iran

Abstract

Background: Utilizing multidimensional item response theory (MIRT) and genetic algorithm(GA) we aimed to design and test the psychometric properties of the short form Postpartum Quality of Life Questionnaire (PQOL). Methods: In this methodological study, 500 women aged 18 to 42 were enrolled through multistage random sampling scheme in Tabriz, Iran. We used MIRT model and GA to identify a short form of the 40-item PQOL measure (SF-PQOL). Construct and criterion validity of theSF-PQOL was assessed by confirmatory factor analysis (CFA) and the correlation between SFPQOL scores with a 12-item short form of QOL (SF-12) and Edinburgh Postnatal Depression Scale (EPDS) scores, respectively. The internal consistency, test-retest reliability and feasibility of the measure were evaluated. Results: sixteen- and 13-item SF-PQOL were identified based on MIRT and GA, respectively.The results indicate the better performance of the MIRT based 13-item SF-PQOL; Construct and criterion validity, the test-retest and internal consistency reliability, and the feasibility were confirmed in the MIRT based SF-PQOL, but not in the GA-based SF-PQOL. Conclusion: The MIRT suggests a 13-item SF-PQOL with adequate content which demonstrated satisfactory validity, reliability, and feasibility. SF-PQOL could be used across the population for both research and clinical objectives.
Keywords: Quality of life, Postpartum period, Reliability, Validity, Item response theory
Citation: Nikan F, Asghari Jafarabadi M, Mohammad-Alizadeh-Charandabi S, Mirghafourvand M. Designation and psychometric properties of the Short Form Postpartum Quality of Life Questionnaire (SF-PQOL): an application of multidimensional item response theory and genetic algorithm. Health Promot Perspect. 2018;8(3):215-224. doi: 10.15171/hpp.2018.29.
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