Outgrow's "interactive forms 47.3% vs static 2.8%, a 16.9× improvement" is the vendor's analysis of its own customers' 50,000+ forms — not an independent benchmark

Claim: Outgrow's frequently-quoted figure — "interactive forms achieve an average conversion rate of 47.3%, compared to 2.8% for traditional static forms — a 16.9× improvement" — is based on "Outgrow's analysis of 50,000+ forms" within its own platform. This is the calculator vendor's internal dataset, not an independent benchmark.

Source: Outgrow https://outgrow.co/blog/b2b-calculator-ideas-lead-generation

Confidence: Single-source / vendor-incentivized — treat as marketing.

Caveats:

• Selection bias: forms that customers chose to launch on Outgrow's platform are not a representative sample of all marketing forms.
• Comparator framing: the "2.8% static" baseline is unspecified.
• No control for traffic source, audience intent, or vertical.

Why this matters for Candid: This is the headline stat sales reps will quote at clients. The honest counter is that an independent, methodologically transparent benchmark of interactive vs static conversion does not appear to exist (Demand Metric 2014 Content & the Buyer's Journey Benchmark Study — vendor-sponsored online opinion survey of 185 marketers; the "2× engagement" headline rounds 70%/36%, Häubl & Trifts 2000 (Marketing Science 19(1):4-21) — controlled lab experiment showing interactive decision aids improve decision quality and reduce search effort). See R5 — Disregard vendor-sourced "interactive content converts better" statistics in client conversations.