Risk of Bias Assessment in Non-Randomized Studies of Interventions for Premenstrual Syndrome: A Systematic Review
Objective: Premenstrual syndrome (PMS) is a very prevalent condition that affects premenopausal women and can result in monthly debilitating emotional and physical symptoms. The objective of this systematic review was to determine which predictive factors were associated with an increased amount of...
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| Format: | Article |
| Language: | English |
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Tehran University of Medical Sciences
2022-05-01
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| Series: | Journal of Family and Reproductive Health |
| Subjects: | |
| Online Access: | https://jfrh.tums.ac.ir/index.php/jfrh/article/view/1865 |
| _version_ | 1811242568371929088 |
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| author | Hadi Tehfe Ryan Chow Sophie Li Patrick Kim Saif Samari Lamia Hayawi Richard Webster Nadya Ben Fadel |
| author_facet | Hadi Tehfe Ryan Chow Sophie Li Patrick Kim Saif Samari Lamia Hayawi Richard Webster Nadya Ben Fadel |
| author_sort | Hadi Tehfe |
| collection | DOAJ |
| description |
Objective: Premenstrual syndrome (PMS) is a very prevalent condition that affects premenopausal women and can result in monthly debilitating emotional and physical symptoms. The objective of this systematic review was to determine which predictive factors were associated with an increased amount of bias in non-randomized studies (NRSs) of PMS.
Materials and methods: A search of the EMBASE and Medline electronic databases was completed from January 1, 2010 to December 2021. The methodological quality of the included studies was independently evaluated and critically appraised using the Risk of Bias in Non-Randomized Studies - of Interventions (ROBINS-1) tool. Associations of different factors with the risk of bias levels were assessed using a univariate logistic regression. Odds ratio and 95% confidence interval (CI) were reported.
Results: Of the 1668 studies, 38 were determined to be eligible for inclusion. The ROBINS-1 tool identified that 12 studies were of low/moderate risk of bias (31.6%) and 26 were of serious/critical risk (68.4%). Evidence of relationships between the ROBINS-1 score and impact factor (OR=0.20; 95% CI, 0.07 to 0.57; p= 0.003) and number of authors (OR=0.65; 95% CI, 0.43 to 0.99; p= 0.046) were identified, whereas no relationships were found with the number of citations, the sample size, the funding type, or the conflict-of-interest statement.
Conclusion: The systematic review concludes that the methodological rigor of non-randomized studies of PMS can vary, with fewer authors and a lower impact factor showing evidence of association with a decreased quality of evidence.
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| first_indexed | 2024-04-12T13:54:16Z |
| format | Article |
| id | doaj.art-7cf887c450bc4e649ba15513764a5773 |
| institution | Directory Open Access Journal |
| issn | 1735-8949 1735-9392 |
| language | English |
| last_indexed | 2024-04-12T13:54:16Z |
| publishDate | 2022-05-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | Journal of Family and Reproductive Health |
| spelling | doaj.art-7cf887c450bc4e649ba15513764a57732022-12-22T03:30:26ZengTehran University of Medical SciencesJournal of Family and Reproductive Health1735-89491735-93922022-05-0116210.18502/jfrh.v16i2.9476Risk of Bias Assessment in Non-Randomized Studies of Interventions for Premenstrual Syndrome: A Systematic ReviewHadi Tehfe0Ryan Chow1Sophie Li2Patrick Kim3Saif Samari4Lamia Hayawi5Richard Webster6Nadya Ben Fadel7Faculty of Medicine, University of Ottawa, Ottawa, CanadaFaculty of Medicine, University of Ottawa, Ottawa, CanadaFaculty of Medicine, University of Ottawa, Ottawa, CanadaFaculty of Medicine, McMaster University, Hamilton, CanadaFaculty of Medicine, McMaster University, Hamilton, CanadaClinical Research Unit, Children's Hospital of Eastern Ontario, Ottawa, CanadaClinical Research Unit, Children's Hospital of Eastern Ontario, Ottawa, CanadaDepartment of Obstetrics and Gynecology, University of Ottawa, Ottawa, Canada Objective: Premenstrual syndrome (PMS) is a very prevalent condition that affects premenopausal women and can result in monthly debilitating emotional and physical symptoms. The objective of this systematic review was to determine which predictive factors were associated with an increased amount of bias in non-randomized studies (NRSs) of PMS. Materials and methods: A search of the EMBASE and Medline electronic databases was completed from January 1, 2010 to December 2021. The methodological quality of the included studies was independently evaluated and critically appraised using the Risk of Bias in Non-Randomized Studies - of Interventions (ROBINS-1) tool. Associations of different factors with the risk of bias levels were assessed using a univariate logistic regression. Odds ratio and 95% confidence interval (CI) were reported. Results: Of the 1668 studies, 38 were determined to be eligible for inclusion. The ROBINS-1 tool identified that 12 studies were of low/moderate risk of bias (31.6%) and 26 were of serious/critical risk (68.4%). Evidence of relationships between the ROBINS-1 score and impact factor (OR=0.20; 95% CI, 0.07 to 0.57; p= 0.003) and number of authors (OR=0.65; 95% CI, 0.43 to 0.99; p= 0.046) were identified, whereas no relationships were found with the number of citations, the sample size, the funding type, or the conflict-of-interest statement. Conclusion: The systematic review concludes that the methodological rigor of non-randomized studies of PMS can vary, with fewer authors and a lower impact factor showing evidence of association with a decreased quality of evidence. https://jfrh.tums.ac.ir/index.php/jfrh/article/view/1865Premenstrual SyndromeNon-Randomized Controlled TrialsSystematic Review |
| spellingShingle | Hadi Tehfe Ryan Chow Sophie Li Patrick Kim Saif Samari Lamia Hayawi Richard Webster Nadya Ben Fadel Risk of Bias Assessment in Non-Randomized Studies of Interventions for Premenstrual Syndrome: A Systematic Review Journal of Family and Reproductive Health Premenstrual Syndrome Non-Randomized Controlled Trials Systematic Review |
| title | Risk of Bias Assessment in Non-Randomized Studies of Interventions for Premenstrual Syndrome: A Systematic Review |
| title_full | Risk of Bias Assessment in Non-Randomized Studies of Interventions for Premenstrual Syndrome: A Systematic Review |
| title_fullStr | Risk of Bias Assessment in Non-Randomized Studies of Interventions for Premenstrual Syndrome: A Systematic Review |
| title_full_unstemmed | Risk of Bias Assessment in Non-Randomized Studies of Interventions for Premenstrual Syndrome: A Systematic Review |
| title_short | Risk of Bias Assessment in Non-Randomized Studies of Interventions for Premenstrual Syndrome: A Systematic Review |
| title_sort | risk of bias assessment in non randomized studies of interventions for premenstrual syndrome a systematic review |
| topic | Premenstrual Syndrome Non-Randomized Controlled Trials Systematic Review |
| url | https://jfrh.tums.ac.ir/index.php/jfrh/article/view/1865 |
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