629 cited runs of 26,277 observed answer runs.
Machine Relations IndexCitation rate2.39% Days observed109/153 Engine breadth6 ConfidenceA
Source domain profile · Academic and government source
NIH in the Machine Relations Index
nih.gov appeared as a cited source in 629 of 26,277 monitored answer runs (2.39%) from 2026-05-10 to 2026-10-16.
Days cited and days observed in the current release window.
chatgpt, claude, gemini, google_ai_mode, google_ai_overviews, perplexity. This is an observed-engine list, not a per-engine rate.
MRI confidence is not an Answer-Source Fidelity grade.
Standing
Population ranks from the public release
- Public standing
- #9 of 31,217 observed domains
- Full universe
- #9 of 31,217
- Source role population
- #2 of 639
- Evidence-qualified source role
- #2 of 32
Segment evidence
Observed category and question-shape rows
Segment rates use the exact category/question-shape denominator. Collecting rows show sample progress only; null or missing rates are not rendered as 0%.
Published segments: 52. Collecting segments: 0.
Peers
Nearest sources on Healthcare Services / News-driven citations
NIH holds its best segment rank, #1 of 1,261, in Healthcare Services / News-driven citations. These sources rank nearest to it on that leaderboard. Full leaderboard.
| Rank | Source | Source role | Segment citation rate |
|---|---|---|---|
| #2 of 1,261 | Fierce Healthcare | Editorial publication | 19.86% |
| #3 of 1,261 | Galengrowth.com | Analyst and consulting research | 13.24% |
| #4 of 1,261 | Aha.org | Academic and government source | 9.85% |
| #5 of 1,261 | Community and social platform | 9.51% | |
| #6 of 1,261 | Y Combinator | Community and social platform | 8.66% |
| #7 of 1,261 | Healthcare Dive | Editorial publication | 7.30% |
| #8 of 1,261 | Rockhealth.com | Analyst and consulting research | 7.13% |
| #9 of 1,261 | Massivelybetterhealthcare.com | Analyst and consulting research | 6.79% |
Mentioned in
Research and weekly reports that link this profile
Release and boundary
How to cite this profile
NIH (nih.gov), 2.39% citation rate, 629 of 26,277 monitored answer runs, 2026-05-10 to 2026-10-16, mri_score_v2.1, mri_score_v2.1+2026-10-16+676547a595a3, https://machinerelations.ai/index/domains/nih.gov.
Release mri_score_v2.1+2026-10-16+676547a595a3; methodology mri_score_v2.1; generated 2026-10-16; window 2026-05-10 to 2026-10-16; artifact 676547a595a3.
The public dataset reports citation rates, rankings, and evidence counts. It excludes internal query identifiers, raw cited URLs, and answer-engine provider payloads. MRI measures observed root-domain citations in monitored prompts, not all AI answers, recommendation quality, web traffic or commercial performance. A citation is not source support.
Embed
Embed this profile’s badge
The link goes to this profile, the alt text is the citation above, and the badge is live: it always shows the current release, so it changes when the release changes and returns 404 if this domain leaves the released population. The embedder decides the link’s rel attribute. To keep a fixed image, download the SVG.
HTML
<a href="https://machinerelations.ai/index/domains/nih.gov"><img src="https://machinerelations.ai/index/domains/nih.gov/badge.svg" alt="NIH (nih.gov), 2.39% citation rate, 629 of 26,277 monitored answer runs, 2026-05-10 to 2026-10-16, mri_score_v2.1, mri_score_v2.1+2026-10-16+676547a595a3, https://machinerelations.ai/index/domains/nih.gov." width="436" height="64"></a>Markdown
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