B
Evidence Grade B
Graded
under review
Safe to Cite
Recent
50%
50% -- chronic medication sales lost due to poor adherence for pharmaceutical industry (chronic medications) (2025)
According to WHO data, 50% of chronic sales disappear at the patient level due to poor adherence.
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
50%
Unit
Percentage
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
World Health Organisation (WHO)
Primary
Tier C
https://www.healthwindow.co.za/pharmaceutical-companies/ ↗
Source Article
Patient Retention Strategy
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Data of the World Health Organisation (WHO) provides that 50% of chronic sales disappear at patient level due to poor adherence. Without the implementation of proper adherence programmes, this drop can severely affect annual sales volumes and have further financial implications.
By implementing…
Original Research
World Health Organisation (WHO)
· Original study ↗
Methodology
Attributed to WHO data, cited by Health Window; no methodology stated
Methodology documented
Segmentation
Industryhealthcare
Cite this stat
Plain Text
pharmaceutical industry (chronic medications): 50% chronic medication sales lost due to poor adherence. Source: World Health Organisation (WHO) (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/who-chronic-sales-lost-poor-adherence
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<blockquote cite="https://lighthousedata.io/data/who-chronic-sales-lost-poor-adherence" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>50%</strong> -- chronic medication sales lost due to poor adherence for pharmaceutical industry (chronic medications)<br><small>Source: World Health Organisation (WHO) (2025) · <a href="https://lighthousedata.io/data/who-chronic-sales-lost-poor-adherence" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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