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POWERLIX Ankle Brace Compression Support Sleeve (Pair) for Injury Recovery, Joint Pain and More....
More product info From POWERLIX

9% of potentially unnatural reviews removed (why?)
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Report Card

Pass Overall Grade
FAIL Unverified Purchases
FAIL Suspicious Reviewers
FAIL Reviewer Participation
WARN Deleted Reviews
WARN Reviewer Ease
PASS Rating Trend
PASS Word Count Comparison
PASS Phrase Repetition
PASS Overlapping Review History
PASS Brand Repeats
PASS Incentivized Reviews

Most Trusted Reviews

I ordered a pair of medium POWERLIX Ankle Brace Compression ... [Go to full review]
Mar 14, 2020      
100% TRUST
  • Verified Purchaser
  • Critical Reviewer (avg. rating: 4.1)


Least Trusted Reviews

Good product, good support. Strained my achilles awhile back and ... [Go to full review]
Jun 25, 2017      
0% TRUST
  • Unverified Purchaser
  • One-Hit Wonder
  • Never-Verified Reviewer
  • Overrepresented Participation (posted 1 Review)
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Fail Unverified Purchases

104 of the 2,454 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 4.8 while the verified purchasers have rated this product an average of 4.6. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.

from unverified purchasers

from verified purchases


4.8
4.6


Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.

Fail Suspicious Reviewers

One-Hit Wonders


134 of the 2,454 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 4.8 while the reviewers who have posted more than one review have rated this product an average of 4.6. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.

from one-hit wonders

from reviewers with more than one review


4.8
4.6


Take-Back Reviewers


713 of the 2,454 reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.

from take-back reviewers

from reviewers without previously deleted reviews


4.6
4.7


Read more about our Suspicious Reviewers test.

Fail Reviewer Participation

  • 64%
  • From reviewers with an overrepresented participation

We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 1562 reviewers (or 64%) are within an overrepresented participation group. These reviews have rated this product an average of 4.7, while all other reviews have rated this product an average of 4.6. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.7
4.6


Read more about our Reviewer Participation test.

Warn Deleted Reviews

We discovered a total of 28 deleted Reviews for this product, with an average rating of 4.3. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.

There are a few limitations to keep in mind regarding the Deleted Reviews test:
  1. We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
  2. We have no information on reviews that were never published in the first place.
  3. We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
Read more about our Deleted Reviews test.

4.3 average rating of deleted reviews

4.3


Show distribution of deleted reviews

Warn Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.5, while the average ease score for reviewers in this category is 4.3. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.

4.5 Product's Average Ease Score

4.3 Category's Average Ease Score


4.5
4.3


Read more about our Reviewer Ease test.


Pass Rating Trend

  • 2%
  • Created over 4 days

We counted 2,454 reviews for this product over the span of 1,240 days, an average of 2.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 8 or fewer reviews on any given day.

However, we see the following 4 days exceeding this threshold:In total, we found that 40 reviews were created on just 4 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviews created on high volume days

from reviews created on normal volume days


4.7
4.7


Read more about our Rating Trend test.

Pass Word Count Comparison

  • 0%
  • Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.

Pass Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.

Common Phrases in Reviews:
36 reviews
(4.9/5)
Common Phrases in Titles:
63 reviews
(4.8/5)


30 of the 2,454 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.7
4.7


Read more about our Phrase Repetition test.

Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:



91 of the 2,454 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.7
4.7


Read more about our Overlapping Review History test.

Pass Brand Repeats

Brand Repeaters


106 of the 2,454 reviewers have reviewed other products for this brand. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from Brand Repeaters

from Non-Repeaters


4.9
4.6


Read more about our Brand Repeats test.

Pass Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.


1 of the 2,454 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from incentivized reviews

from non-incentivized reviews


3.0
4.7


Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.