Rankquant
MethodologyAbout

Health, Household & Baby

Portzon Back Support Back Braces Posture Corrector for Women and Men, Adjustable Back straightener,Pain Relief Breathable

Health, Household & Baby4.0· 3,998 Amazon ratings

Bias-adjusted across 3,998 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Health, Household & Baby.

9.5%
Percentile · Global
8.3%
Percentile · Cohort
Health, Household & Baby
View on Amazon

Amazon Associates link · as an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

Portzon Back Support Back Braces Posture Corrector for Women and Men, Adjustable Back straightener,Pain Relief Breathable

How the score was built

Amazon ratings
3,998

used for the Bayesian percentile

Raw star average
4.0 / 5

unadjusted Amazon mean

Bayesian avg
4.01

raw rating shrunk to the category prior

Reviewer-graph z
-0.707

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

Buy it: View on Amazon →

Same category · Health, Household & Baby

Similar products