B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
23%
23% -- clicks growth rate for Long-form content with table of contents (Thrillax test) (2026)
Adding a table of contents to long-form content increased clicks by 23%.
- Specific sample size and testing methodology details are not provided
Attribution:
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Lighthouse Research Team
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Source verified
Evidence graded
Value
23%
Unit
Percentage
Data Vintage
2026
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
95
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Thrillax
Primary
Tier A
https://www.thrillax.com/question-driven-content-ai-search/ ↗
Source Article
AI Prefers Questions
Why Structured, Question-Driven Content Performs Better in AI Search
The 58% Increase
We ran a simple test.
Instead of rewriting content, building new links, or changing keywords, we did just one thing:
We reformatted blog headers from statements into questions.
Within three months, AI-driven visits…
Original Research
Thrillax
· Original study ↗
Methodology
First-party observation; sample size not specified
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Long-form content with table of contents (Thrillax test): 23% clicks growth rate. Source: Thrillax (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/clicks-increase-table-of-contents
HTML Embed
<blockquote cite="https://lighthousedata.io/data/clicks-increase-table-of-contents" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>23%</strong> -- clicks growth rate for Long-form content with table of contents (Thrillax test)<br><small>Source: Thrillax (2026) · <a href="https://lighthousedata.io/data/clicks-increase-table-of-contents" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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