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. 2023 Aug 14;13(8):e072258. doi: 10.1136/bmjopen-2023-072258

Table 5.

Results from eight studies on the frequency of reporting COI

Study Social media Health condition Frequency (n of posts reporting COI / N total posts)
Betschart et al33 YouTube Treatment options for lower urinary tract symptoms with benign prostatic hyperplasia 2% (2/159) (COI reporting)
Lagu34 Blogs General 0% (0/271) (COI reporting)
Nishizaki et al35 Japanese YouTube videos Paediatrics: nocturnal enuresis 0% (0/72) (COI reporting)
Pratsinis et al36 YouTube Treatment options of urinary stones 9% (9/100) (COI reporting)
Pratsinis, et al37 YouTube Benign prostatic hyperplasia, prostate cancer and urinary stone disease ‘Majority’ did not have COI disclosure
Estimated: 46/240 (COI reporting)
Vu et al38 YouTube Treatment of prostate cancer: surgical therapy vs radiotherapy 10% (surgery) and 5% (radiotherapy) (COI reporting)
Miller et al12 Blogs General 15.6% (148/951) of health blogs reported sponsorship
Shrank et al39 Social networking sites (93% featured blogs) Diabetes information

  1. Industry sponsorship:

    • Pharmaceutical manufacturers: 53.3% (8/15).

    • Diabetes device manufacturers: 60% (9/15).

    • Webhost sponsorship: 13.3% (2/15)

  2. Foundation sponsorship: 20% (3/15).

  3. Voluntary donations: 26.7% (4/15).

  4. No industry sponsorship: 20% (3/15).

  5. Insurers: 20% (3/15).

  6. Not-for-profit: 26.7% (4/15).

COI, conflicts of interest.