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Amazon.com > Health & Household > Medical Supplies & Equipment > Braces, Splints & Supports > Leg & Foot Supports > Knee Braces
Iron Bull Strength Knee Sleeves 7mm (1 Pair) - High Performance Knee Sleeve Support for Weight...
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From Iron Bull Strength
This report was last updated 12/24/2021.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: While Amazon.com claims 0 Ratings, we counted 853 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL
Unverified Purchases

FAIL
Suspicious Reviewers

FAIL
Phrase Repetition

WARN
Reviewer Ease

WARN
Reviewer Participation

PASS
Rating Trend

PASS
Word Count Comparison

PASS
Overlapping Review History

PASS
Brand Repeats

PASS
Incentivized Reviews

PASS
Deleted Reviews

Most Trusted Reviews
I never understood why people spent this much on knee ... [Go to full review]
Mar 28, 2021
100%
TRUST
TRUST
-
Verified Purchaser
-
Take-Back Reviewer (8 deleted Reviews; avg. rating: 3.9)
-
Critical Reviewer (avg. rating: 4.1)
Least Trusted Reviews
These are awesome. A week ago went to deadlift after ... [Go to full review]
Nov 28, 2020
0%
TRUST
TRUST
-
Unverified Purchaser
-
Take-Back Reviewer (1 deleted Review; avg. rating: 2.0)
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Overrepresented Participation (posted 8 Reviews)
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Easy Grader (avg. rating: 4.6)
Analysis Details
Fail
Unverified Purchases

20 of the 853 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.8 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.
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
91 of the 853 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Never-Verified Reviewers
8 of the 853 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 3.8 while the reviewers who have written at least one verified purchase review 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.
Take-Back Reviewers
231 of the 853 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.
Fail
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:
Show MoreShow Less
35 reviews
(4.9/5)
(4.9/5)
16 reviews
(5.0/5)
(5.0/5)
13 reviews
(4.9/5)
(4.9/5)
7 reviews
(5.0/5)
(5.0/5)
12 reviews
(4.9/5)
(4.9/5)
9 reviews
(4.8/5)
(4.8/5)
Common Phrases in Titles:
12 reviews
(4.9/5)
(4.9/5)
40 of the 853 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 5.0 while reviews without substantial repetitive phrases 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.
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 4.4, 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.
4.4 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn
Reviewer Participation

-
- 75%
- 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 636 reviewers (or 75%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass
Rating Trend

-
- 0%
- Created on high-volume days
We counted 853 reviews for this product over the span of 1,848 days, an average of 0.5 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 4 or fewer reviews on any given day. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
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.
Read more about our Word Count Comparison test.
Pass
Overlapping Review History

Reviewers of this product have ALSO reviewed the following products:
1% also reviewed:
Rip Toned Weight Lifting Wrist Wraps for... by Rip Toned
45 of the 853 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.
Pass
Brand Repeats

Brand Repeaters
44 of the 853 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.
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 853 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.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass
Deleted Reviews

- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- 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.
- We have no information on reviews that were never published in the first place.
- 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.