Factor Structure of the Pittsburgh Sleep Quality Index among Women Undergoing Infertility Treatment: A Confirmatory Factor Analysis
Background and Objective: People that undergo assisted infertility treatments experience more sleep problems. Alt-hough Pittsburgh Sleep Quality Index (PSQI) frequently has been used as a sleep quality assessment scale in different clinical and non-clinical settings, different sample characteristic...
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Tehran University of Medical Sciences
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doaj-c8bfc0c64f9b446a957c4069b310f7ed2021-09-11T06:04:43ZengTehran University of Medical SciencesJournal of Sleep Sciences2476-29382476-29462020-12-015210.18502/jss.v5i2.5598Factor Structure of the Pittsburgh Sleep Quality Index among Women Undergoing Infertility Treatment: A Confirmatory Factor AnalysisMansour shamsipour0Ali Asghar Akhlaghi1Samira Vesali2Elham Khatooni3Arezu Najafi4Behnaz Navid5Elaheh Akhlaghi6Hooria Marzban7Zahra Ezabadi8Reza Omani-Samani9Department of Research Methodology and Data Analysis, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran AND Center for Air Pollution Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, IranDepartment of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, Academic Center for Education, Culture and Research, Tehran, IranDepartment of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, Academic Center for Education, Culture and Research, Tehran, IranDepartment of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iranoccupational Sleep Research Center, Baharloo Hospital, Tehran University of Medical Sciences, Tehran, IranDepartment of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, Academic Center for Education, Culture and Research, Tehran, IranDepartment of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, Academic Center for Education, Culture and Research, Tehran, IranDepartment of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, Academic Center for Education, Culture and Research, Tehran, IranDepartment of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, Academic Center for Education, Culture and Research, Tehran, IranDepartment of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, Academic Center for Education, Culture and Research, Tehran, Iran Background and Objective: People that undergo assisted infertility treatments experience more sleep problems. Alt-hough Pittsburgh Sleep Quality Index (PSQI) frequently has been used as a sleep quality assessment scale in different clinical and non-clinical settings, different sample characteristics may account for different structures. The current study aimed to evaluate the factor structure of PSQI among women seeking infertility treatment in Iran. Materials and Methods: Using a convenience sampling method, 157 infertile women or women whose husbands had infertility problems were included in a cross-sectional study in Royan Institute, a main referral infertility center in Teh-ran, Iran. The factor structure of PSQI was evaluated through exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). Results: The Cronbach’s alpha coefficient for PSQI was 0.65. A two-factor model was extracted by EFA; 56% of the total variance was accounted for by this model. The results of CFA indicated that extracted model obtained acceptable fit statistics [comparative fit index (CFI) = 0.942, standardized root mean square residual (SRMR) = 0.042, root mean square error of approximation (RMSEA) = 0.128, χ2 = 19.8, degree of freedom (df) = 12, P = 0.071] compared to other original single-factor or 3-factor models. Conclusion: Our results revealed the limited usefulness of single-factor structure of PSQI. A two-factor model of Per-sian version of PSQI should be used to assess sleep problems among women seeking assisted infertility treatments. https://jss.tums.ac.ir/index.php/jss/article/view/154Sleep; Factor analysis; Assisted reproductive techniques; Infertility |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mansour shamsipour Ali Asghar Akhlaghi Samira Vesali Elham Khatooni Arezu Najafi Behnaz Navid Elaheh Akhlaghi Hooria Marzban Zahra Ezabadi Reza Omani-Samani |
spellingShingle |
Mansour shamsipour Ali Asghar Akhlaghi Samira Vesali Elham Khatooni Arezu Najafi Behnaz Navid Elaheh Akhlaghi Hooria Marzban Zahra Ezabadi Reza Omani-Samani Factor Structure of the Pittsburgh Sleep Quality Index among Women Undergoing Infertility Treatment: A Confirmatory Factor Analysis Journal of Sleep Sciences Sleep; Factor analysis; Assisted reproductive techniques; Infertility |
author_facet |
Mansour shamsipour Ali Asghar Akhlaghi Samira Vesali Elham Khatooni Arezu Najafi Behnaz Navid Elaheh Akhlaghi Hooria Marzban Zahra Ezabadi Reza Omani-Samani |
author_sort |
Mansour shamsipour |
title |
Factor Structure of the Pittsburgh Sleep Quality Index among Women Undergoing Infertility Treatment: A Confirmatory Factor Analysis |
title_short |
Factor Structure of the Pittsburgh Sleep Quality Index among Women Undergoing Infertility Treatment: A Confirmatory Factor Analysis |
title_full |
Factor Structure of the Pittsburgh Sleep Quality Index among Women Undergoing Infertility Treatment: A Confirmatory Factor Analysis |
title_fullStr |
Factor Structure of the Pittsburgh Sleep Quality Index among Women Undergoing Infertility Treatment: A Confirmatory Factor Analysis |
title_full_unstemmed |
Factor Structure of the Pittsburgh Sleep Quality Index among Women Undergoing Infertility Treatment: A Confirmatory Factor Analysis |
title_sort |
factor structure of the pittsburgh sleep quality index among women undergoing infertility treatment: a confirmatory factor analysis |
publisher |
Tehran University of Medical Sciences |
series |
Journal of Sleep Sciences |
issn |
2476-2938 2476-2946 |
publishDate |
2020-12-01 |
description |
Background and Objective: People that undergo assisted infertility treatments experience more sleep problems. Alt-hough Pittsburgh Sleep Quality Index (PSQI) frequently has been used as a sleep quality assessment scale in different clinical and non-clinical settings, different sample characteristics may account for different structures. The current study aimed to evaluate the factor structure of PSQI among women seeking infertility treatment in Iran.
Materials and Methods: Using a convenience sampling method, 157 infertile women or women whose husbands had infertility problems were included in a cross-sectional study in Royan Institute, a main referral infertility center in Teh-ran, Iran. The factor structure of PSQI was evaluated through exploratory factor analysis (EFA) and confirmatory factor analysis (CFA).
Results: The Cronbach’s alpha coefficient for PSQI was 0.65. A two-factor model was extracted by EFA; 56% of the total variance was accounted for by this model. The results of CFA indicated that extracted model obtained acceptable fit statistics [comparative fit index (CFI) = 0.942, standardized root mean square residual (SRMR) = 0.042, root mean square error of approximation (RMSEA) = 0.128, χ2 = 19.8, degree of freedom (df) = 12, P = 0.071] compared to other original single-factor or 3-factor models.
Conclusion: Our results revealed the limited usefulness of single-factor structure of PSQI. A two-factor model of Per-sian version of PSQI should be used to assess sleep problems among women seeking assisted infertility treatments.
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topic |
Sleep; Factor analysis; Assisted reproductive techniques; Infertility |
url |
https://jss.tums.ac.ir/index.php/jss/article/view/154 |
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