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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Main Authors: Mansour shamsipour, Ali Asghar Akhlaghi, Samira Vesali, Elham Khatooni, Arezu Najafi, Behnaz Navid, Elaheh Akhlaghi, Hooria Marzban, Zahra Ezabadi, Reza Omani-Samani
Format: Article
Language:English
Published: Tehran University of Medical Sciences 2020-12-01
Series:Journal of Sleep Sciences
Subjects:
Online Access:https://jss.tums.ac.ir/index.php/jss/article/view/154
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spelling 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.
topic Sleep; Factor analysis; Assisted reproductive techniques; Infertility
url https://jss.tums.ac.ir/index.php/jss/article/view/154
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