141,923
Total PMIDs
21,245
Matched to QS Top 200
185
QS Institutions Matched
15.0%
Match Rate
Key Result
Of 142K GWAS papers analyzed, 21,245 (15%) have last authors affiliated with QS 2005 top 200 universities. 185 of the 200 QS institutions are represented in our dataset.
Methodology
This analysis extracts last-author affiliation data from OpenAlex for 142,645 GWAS-related PMIDs, then matches institutions to QS 2005 World University Rankings.
- OpenAlex Extraction: Scanned 363GB of OpenAlex snapshot data (971 files) using 49 parallel HPC jobs to extract last-author affiliations
- Institution Classification: Used OpenAlex API to classify 8,991 unique institutions by type (education, healthcare, facility, etc.)
- QS Matching: Matched education institutions to QS 2005 rankings using OpenAlex display names, alternative names, and 36 manual mappings for naming discrepancies
Institution Types
| Type | Count | Percentage |
|---|---|---|
| Education | 62,550 | 44.1% |
| Healthcare | 37,120 | 26.2% |
| Unknown | 11,692 | 8.2% |
| Other | 10,768 | 7.6% |
| Facility | 10,455 | 7.4% |
| Nonprofit | 3,799 | 2.7% |
| Government | 3,292 | 2.3% |
| Company | 2,199 | 1.5% |
Top 10 QS Institutions by PMID Count
| Rank | Institution | PMIDs |
|---|---|---|
| 36 | University of Michigan - Ann Arbor | 470 |
| 16 | The University of Tokyo | 463 |
| 193 | University of Pittsburgh | 429 |
| 17 | University of California - San Francisco | 413 |
| 7 | Yale University | 398 |
| 32 | University of Pennsylvania | 390 |
| 105 | Osaka University | 370 |
| 27 | Johns Hopkins University | 355 |
| 169 | Shanghai Jiao Tong University | 353 |
| 58 | Washington University in St. Louis | 351 |
Verification Examples
Three random examples for manual verification on PubMed:
QS ↔ OpenAlex Institution Matching Table
| QS Rank | QS Institution | OpenAlex Name | Match Type |
|---|
Data Sources
- OpenAlex: Academic metadata snapshot (~363GB) for author affiliations
- QS Rankings: 2005 World University Rankings (top 200)
- PubMed: 142,645 GWAS-related PMIDs (2005-2016)