B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Dated
80%
80% -- contact rate decline for outbound sales leads (2011)
Contact rates drop by 80% after 5 minutes of receiving a lead.
- Based on speed-to-lead research published in Harvard Business Review (2011) and MIT/InsideSales.com
- Individual results vary
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
80%
Unit
Percentage
Data Vintage
2011
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
60
Freshness
95
Source
MIT / InsideSales.com (cited via Harvard Business Review)
Primary
Tier C
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Original Research
MIT / InsideSales.com (cited via Harvard Business Review)
· Original study ↗
Methodology
Vendor page citing speed-to-lead research published in Harvard Business Review (2011) and MIT/InsideSales.com
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
outbound sales leads: 80% contact rate decline. Source: MIT / InsideSales.com (cited via Harvard Business Review) (2011). Via Lighthouse Intelligence -- https://lighthousedata.io/data/speed-to-lead-contact-rate-drop-80-percent
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<blockquote cite="https://lighthousedata.io/data/speed-to-lead-contact-rate-drop-80-percent" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>80%</strong> -- contact rate decline for outbound sales leads<br><small>Source: MIT / InsideSales.com (cited via Harvard Business Review) (2011) · <a href="https://lighthousedata.io/data/speed-to-lead-contact-rate-drop-80-percent" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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