B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
5,000
5,000 -- event delegate count for ISTH Congress 2025 (Washington, DC) (2025)
The ISTH Congress 2025 in Washington, DC drew nearly 5,000 delegates.
- Source states 'nearly 5,000 delegates'
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
5,000
Unit
Count
Data Vintage
2025
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Destination DC / ISTH
Primary
Tier B
https://bestcities.net/whats-happening-november-2025/ ↗
Source Article
What's Happening This November (2025)
Original Research
Destination DC / ISTH
· Original study ↗
Methodology
Congress attendance reported by BestCities/Destination DC
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
ISTH Congress 2025 (Washington, DC): 5,000 event delegate count. Source: Destination DC / ISTH (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/isth-congress-2025-dc-delegates
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<blockquote cite="https://lighthousedata.io/data/isth-congress-2025-dc-delegates" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>5,000</strong> -- event delegate count for ISTH Congress 2025 (Washington, DC)<br><small>Source: Destination DC / ISTH (2025) · <a href="https://lighthousedata.io/data/isth-congress-2025-dc-delegates" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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