Research Insights
HBOT Research by Study Type: What the Literature Shows
Across 14,529 indexed studies, 1,128 are randomised controlled trials, systematic reviews, or meta-analyses, with the remainder spanning observational studies, case reports, and other designs.
Study type describes research design, not conclusions. The mix of designs below reflects how studies are classified at import. It is not a measure of whether HBOT works for any condition; a large case-report count, for example, does not establish effectiveness, and design labels can be broad.
Indexed studies by study type
Clinical Study
6,880
Study
2,535
Review
1,288
Case Report
918
RCT
669
Retrospective Study
593
Case Study
465
Systematic Review
269
Prospective Study
240
Clinical Guideline
203
Meta-Analysis
190
Clinical Trial
100
Pilot Study
80
Cohort Study
64
Cochrane Review
35
Data generated June 27, 2026; updated weekly. How this data is produced.