Modular literature review: a novel systematic search and review method to support priority setting in health policy and practice.

Annariina Koivu, Patricia J Hunter, Pieta Näsänen-Gilmore, Yvonne Muthiani, Jaana Isojärvi, Pia Pörtfors, Ulla Ashorn, Per Ashorn

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Background
There is an unmet need for review methods to support priority-setting, policy-making and strategic planning when a wide variety of interventions from differing disciplines may have the potential to impact a health outcome of interest. This article describes a Modular Literature Review, a novel systematic search and review method that employs systematic search strategies together with a hierarchy-based appraisal and synthesis of the resulting evidence.

Methods
We designed the Modular Review to examine the effects of 43 interventions on a health problem of global significance. Using the PICOS (Population, Intervention, Comparison, Outcome, Study design) framework, we developed a single four-module search template in which population, comparison and outcome modules were the same for each search and the intervention module was different for each of the 43 interventions. A series of literature searches were performed in five databases, followed by screening, extraction and analysis of data. “ES documents”, source documents for effect size (ES) estimates, were systematically identified based on a hierarchy of evidence. The evidence was categorised according to the likely effect on the outcome and presented in a standardised format with quantitative effect estimates, meta-analyses and narrative reporting. We compared the Modular Review to other review methods in health research for its strengths and limitations.

Results
The Modular Review method was used to review the impact of 46 antenatal interventions on four specified birth outcomes within 12 months. A total of 61,279 records were found; 35,244 were screened by title-abstract. Six thousand two hundred seventy-two full articles were reviewed against the inclusion criteria resulting in 365 eligible articles.

Conclusions
The Modular Review preserves principles that have traditionally been important to systematic reviews but can address multiple research questions simultaneously. The result is an
Original languageEnglish
Article number268
JournalBMC Medical Research Methodology
Volume21
DOIs
Publication statusPublished - 2021
Publication typeA1 Journal article-refereed

Keywords

  • systematic review
  • Health policy
  • Review Literature as Topic
  • priority setting

Publication forum classification

  • Publication forum level 1

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