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Health, Household & Baby

Hawaii Pharm Barberry Alcohol-Free Liquid Extract, Barberry (Berberis Vulgaris) Dried Root Bark Glycerite Natural Herbal Supplement 2 oz

Health, Household & Baby4.6· 641 Amazon ratings

Bias-adjusted across 641 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Health, Household & Baby.

89.5%
Percentile · Global
82.7%
Percentile · Cohort
Health, Household & Baby
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Hawaii Pharm Barberry Alcohol-Free Liquid Extract, Barberry (Berberis Vulgaris) Dried Root Bark Glycerite Natural Herbal Supplement 2 oz

How the score was built

Amazon ratings
641

used for the Bayesian percentile

Raw star average
4.6 / 5

unadjusted Amazon mean

Bayesian avg
4.56

raw rating shrunk to the category prior

Reviewer-graph z
-1.155

bias-corrected vs. each reviewer's baseline (0 qualifying)

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Same category · Health, Household & Baby

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