Winner
High confidence
Sticky CTA Bar → +43–70% Leads and Engagement
Multiple [company] tests confirm sticky CTAs work: Test #217 (Thomasnet.com) +70.6% engagement; Test #132 (Sjvc.edu mobile) +43.1% leads with sticky footer; Test #297 (Trydesignlab.com) +18.4% sales with sticky Enroll button. Pattern is consistent across B2B, education, and SaaS.
Hypothesis
A CTA that remains visible as users scroll (sticky/floating) will capture conversions from users who are convinced mid-page but don't scroll back up.
Why This Works
Key Learnings
Expected Lift Range
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