Reporting and Analysis of Trial-Based Cost-Effectiveness Evaluations in Obstetrics and Gynaecology

Mohamed El Alili (), Johanna M. Dongen, Judith A. F. Huirne, Maurits W. Tulder and Judith E. Bosmans
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Mohamed El Alili: VU University Amsterdam, Amsterdam Public Health Research Institute
Johanna M. Dongen: VU University Amsterdam, Amsterdam Public Health Research Institute
Judith A. F. Huirne: VU University Medical Centre
Maurits W. Tulder: VU University Amsterdam, Amsterdam Public Health Research Institute
Judith E. Bosmans: VU University Amsterdam, Amsterdam Public Health Research Institute

PharmacoEconomics, 2017, vol. 35, issue 10, No 4, 1007-1033

Abstract: Abstract Background and Objectives The aim was to systematically review whether the reporting and analysis of trial-based cost-effectiveness evaluations in the field of obstetrics and gynaecology comply with guidelines and recommendations, and whether this has improved over time. Data Sources and Selection Criteria A literature search was performed in MEDLINE, the NHS Economic Evaluation Database (NHS EED) and the Health Technology Assessment (HTA) database to identify trial-based cost-effectiveness evaluations in obstetrics and gynaecology published between January 1, 2000 and May 16, 2017. Studies performed in middle- and low-income countries and studies related to prevention, midwifery, and reproduction were excluded. Data Collection and Analysis Reporting quality was assessed using the Consolidated Health Economic Evaluation Reporting Standard (CHEERS) statement (a modified version with 21 items, as we focused on trial-based cost-effectiveness evaluations) and the statistical quality was assessed using a literature-based list of criteria (8 items). Exploratory regression analyses were performed to assess the association between reporting and statistical quality scores and publication year. Results The electronic search resulted in 5482 potentially eligible studies. Forty-five studies fulfilled the inclusion criteria, 22 in obstetrics and 23 in gynaecology. Twenty-seven (60%) studies did not adhere to 50% (n = 10) or more of the reporting quality items and 32 studies (71%) did not meet 50% (n = 4) or more of the statistical quality items. As for the statistical quality, no study used the appropriate method to assess cost differences, no advanced methods were used to deal with missing data, and clustering of data was ignored in all studies. No significant improvements over time were found in reporting or statistical quality in gynaecology, whereas in obstetrics a significant improvement in reporting and statistical quality was found over time. Limitations The focus of this review was on trial-based cost-effectiveness evaluations in obstetrics and gynaecology, so further research is needed to explore whether results from this review are generalizable to other medical disciplines. Conclusions and Implications of Key Findings The reporting and analysis of trial-based cost-effectiveness evaluations in gynaecology and obstetrics is generally poor. Since this can result in biased results, incorrect conclusions, and inappropriate healthcare decisions, there is an urgent need for improvement in the methods of cost-effectiveness evaluations in this field.

Date: 2017
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DOI: 10.1007/s40273-017-0531-3

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