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Prevail Adjustable Underwear
More product info From Prevail

Amazon Reviews for  Prevail Adjustable Underwear
Rating:
32 Ratings
32 Reviews
("Ratings" vs. "Reviews")
28% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
Jump to Report Card

Report Card

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

Most Trusted Reviews

Great price and great product! [Go to full review]
Oct 20, 2016      
100% TRUST
  • Verified Purchaser
  • Easy Grader (avg. rating: 5.0)


Least Trusted Reviews

There’s a certain age that most seniors in the building ... [Go to full review]
Jun 15, 2016      
0% TRUST
  • Unverified Purchaser
  • Contains repetitive phrases (show)
  • Take-Back Reviewer (668 deleted Reviews; avg. rating: 4.7)
  • Overlapping Review History: reviewed 1 of 9 top products
  • Easy Grader (avg. rating: 4.9)


Analysis Details

Fail Deleted Reviews

We discovered a total of 2 deleted Reviews for this product, with an average rating of 5. 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.

5.0 average rating of deleted reviews

5.0


Show distribution of deleted reviews

Fail Unverified Purchases

7 of the 32 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.0 while the verified purchasers have rated this product an average of 4.1. 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


3.0
4.1


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

Take-Back Reviewers


26 of the 32 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.

from take-back reviewers

from reviewers without previously deleted reviews


4.0
3.2


Read more about our Suspicious Reviewers test.

Warn Rating Trend

  • 19%
  • Created over 3 days

We counted 32 reviews for this product over the span of 1,600 days, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 1 or fewer reviews on any given day.

However, we see the following 3 days exceeding this threshold:In total, we found that 6 reviews were created on just 3 days. This is an excessively high number of reviews submitted on these high volume days.

from reviews created on high volume days

from reviews created on normal volume days


4.3
3.8


Read more about our Rating Trend test.

Warn 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:
2 reviews
(4.5/5)
2 reviews
(4.5/5)
4 reviews
(3.8/5)
2 reviews
(4.0/5)
2 reviews
(4.5/5)
2 reviews
(3.0/5)
2 reviews
(4.5/5)
2 reviews
(4.0/5)
3 reviews
(4.3/5)
Show MoreShow Less
Common Phrases in Titles:
2 reviews
(5.0/5)


7 of the 32 total reviews for this product use substantial repetitive phrases between them. While this is more than we'd expect to see, the discrepancy in ratings between the these reviews and reviews without substantial repetitive phrases isn't significant enough to rule out the possibility of it being due to random chance.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.4
3.7


Read more about our Phrase Repetition test.

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



19 of the 32 reviewers have substantial overlapping product review history. While this is more than we'd expect to see, the discrepancy in ratings between these reviewers and reviewers who have a more unique product review history isn't significant enough to rule out the possibility of it being due to random chance.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.1
3.6


Read more about our Overlapping Review History 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 Reviewer Participation

  • 0%
  • From reviewers with an overrepresented participation
We didn't find any participation groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Reviewer Participation test.

Pass 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 4.3, while the average ease score for reviewers in this category is 4.3.

4.3 Product's Average Ease Score

4.3 Category's Average Ease Score


4.3
4.3


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters

We didn't detect a substantial amount of Brand Repeaters.

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.

  • 0%
  • Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.