Figure 2, Literature flow diagram - Noninvasive Nonpharmacological Treatment for Chronic Pain: A Systematic Review Update

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Figure 2 is a flow chart that outlines study retrieval and selection process. It begins with the total number of citations retrieved from the literature searches and ends with the number of studies that satisfied the inclusion criteria of the report. This figure is described further in the Section entitled “Results of Literature Searches”. Briefly, a total of 8516 potentially relevant citations were identified (4996 from the prior AHRQ report and 3520 for this update) and, after removal of duplicates, 6702 (4276 from the prior AHRQ report and 7474 for this update) underwent title and abstract review. After dual review of abstracts and titles, 5900 articles (3083 from the prior AHRQ report and 2817 for this update) were excluded. The remaining 1574 articles (1193 from the prior AHRQ report and 381 for this update) underwent dual review at the full text level and a total of 233 trials (202 from the prior AHRQ report and 31 for this update) in 252 publications (218 from the prior AHRQ report and 34 for this update) met the inclusion criteria and were included in this report update.

Figure 2Literature flow diagram

^a Cochrane databases include the Cochrane Central Register of Controlled Trials and the Cochrane Database of Systematic Reviews

^b Other sources include prior reports, reference lists of relevant articles, systematic reviews, etc.

^c Includes 10 trials that were identified in the 2018 report search.

^d Publications may be included or excluded for multiple interventions

^e Studies checked for inclusion

^f One of the publications identified for update report was a followup study to a trial included in the previous report, therefore this study is not counted in the number of included trials but is counted under total publications.

From: Results

Cover of Noninvasive Nonpharmacological Treatment for Chronic Pain: A Systematic Review Update

Noninvasive Nonpharmacological Treatment for Chronic Pain: A Systematic Review Update [Internet].

Comparative Effectiveness Review, No. 227.

Skelly AC, Chou R, Dettori JR, et al.

Rockville (MD): Agency for Healthcare Research and Quality (US); 2020 Apr.

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