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Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement
David Moher, Alessandro Liberati, Jennifer Tetzlaff, Douglas G. Altman, for the PRISMA Group. BMJ, 2009-07-21
Topic: Risk, prevention and care in population studies
David Moher and colleagues introduce PRISMA. PRISMA is an update of the QUOROM guidelines for reporting systematic reviews and meta-analyses.
Key findings
- David Moher and colleagues introduce PRISMA, an update of the QUOROM guidelines for reporting systematic reviews and meta-analyses
Why it matters
Describes the PRISMA statement, a list of preferred reporting items for systematic reviews and meta-analyses; it is not about Alzheimer's specifically.
How this study scored 59/100
Published in a leading specialty journal. Scored zero for study design, sample size, effect reported, studied in people and randomised / blinded because the record does not state it. We have no data on strength of evidence and senior author's track record, so those were left out: it earned 54 of the 91 points we could judge it on, which is 59 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 9 / 10 | Tier 2 — leading specialty journal (BMJ) |
| Journal's citation record | 4 / 4 | BMJ: journal h-index 608 (OpenAlex, 2026-10-29) |
| Study design | 0 / 12 | No study design recorded — scores zero, not guessed (not stated in the record — scored 0) |
| Strength of evidence | — / 5 | No evidence rating recorded — left out of this score |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 1 / 5 | 2009 — within 20 year(s) of the newest study here |
| Sample size | 0 / 4 | Participant count not stated — scores zero (not stated in the record — scored 0) |
| Effect reported | 0 / 3 | No effect size reported — scores zero (not stated in the record — scored 0) |
| Studied in people | 0 / 3 | Not stated whether this was studied in people — scores zero (not stated in the record — scored 0) |
| Randomised / blinded | 0 / 2 | No randomisation or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | 7 / 7 | Cited 82,399 times (OpenAlex, 2026-10-10) |
| Citations per year | 5 / 5 | 4,336.8 citations a year over 19 year(s) since 2009 |
| Impact for its field and year | 6 / 6 | Cited 49.3× the average for papers of its field and year (OpenAlex FWCI) |
| Cited by studies here | 0 / 6 | No other study in this library cites it |
| Still being cited | 4 / 4 | Cited 6,819 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | — / 4 | Senior author's record not available — left out of this score |
| Institution's track record | 2 / 3 | University of Oxford: institution h-index 2,205 (OpenAlex) |
| Multi-centre collaboration | 2 / 3 | OpenAlex lists 5 institution(s) in 3 countries |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 19622551) |
| Free to read | 2 / 2 | Free to read |
| Points | 54 / 91 | Scored on 18 of 20 parts. We have no data for the rest, so they are left out: 54 of the 91 points we could judge it on is 59 out of 100. |
| Total | 59 / 100 | — |
What each of these 20 components measures, and what this score is not →
Read the original
Full text: free to read — OpenAlex lists this copy as free to read: the link above (checked 6 Feb 1020).
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. Check the citation against the original before you use it.
APA 7th
Moher, D., Liberati, A., Tetzlaff, J., Altman, D. G., & PRISMA Group. (2009). Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. BMJ. https://doi.org/10.1136/bmj.b2535
Vancouver
Moher D, Liberati A, Tetzlaff J, Altman DG, PRISMA Group. Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. BMJ. 2009. doi:10.1136/bmj.b2535. PMID: 19622551.
BibTeX
@article{moher2009-19622551,
author = {Moher, David and Liberati, Alessandro and Tetzlaff, Jennifer and Altman, Douglas G. and {PRISMA Group}},
title = {{Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement}},
journal = {BMJ},
year = {2009},
doi = {10.1136/bmj.b2535},
pmid = {19622551},
url = {https://doi.org/10.1136/bmj.b2535}
}
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