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ULBO PLATINUM シトルリン アルギニン 亜鉛 厳選8成分配合 180粒 栄養機能食品
More product info From ULBO(アルボ)


Rating:
860 Reviews
92% of potentially unnatural reviews removed (Why?)
Adjusted:
Jump to Report Card


Report Card

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

Most Trusted Reviews

突然勃起出来なくなって... [Go to full review]
Jan 4, 2019      
100% TRUST
  • Verified Purchaser
  • Critical Reviewer (avg. rating: 2.0)


Least Trusted Reviews

59歳男性ですが最近元気... [Go to full review]
Mar 29, 2019      
0% TRUST
  • Verified Purchaser
  • Overrepresented word count (50 words)
  • Overlapping Review History: reviewed 1 of 9 top products
  • Overrepresented Participation (posted 13 reviews)
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Fail Deleted Reviews

We discovered a total of 19 deleted reviews for this product, with an average rating of 3.3. 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 the Deleted Reviews test here.

3.3 average rating of deleted reviews

3.3


Show distribution of deleted reviews

Fail Suspicious Reviewers

One-Hit Wonders


Approximately 65% of reviewers have only reviewed this product. This is an excessively large percentage of One-Hit Wonders which may indicate unnatural reviews.

from one-hit wonders

from reviewers with more than one review


4.9
4.6


Read more about our Suspicious Reviewers test.

Fail 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 4.8, while the average ease score for reviewers in this category is 4.2. 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.

4.8 Product's Average Ease Score

4.2 Category's Average Ease Score


4.8
4.2


Read more about our Reviewer Ease test.


Warn Rating Trend
It appears that several reviews were created during just a short period of time.
Read more about our Rating Trend test.

Warn Word Count Comparison
Word counts are approximated for Hanzi and Kanji


  • ~65%
  • Have an overrepresented word count

In the graph above, we can see the distribution of review word counts for this product and the expected distribution for this category. We see the following 1 group with a statistically significant greater concentration than what we'd expect to see:In total, we found that approximately 65% are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.9
4.6


Read more about our Word Count Comparison test.

Pass Unverified Purchases

24 of the 860 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from unverified purchasers

from verified purchases


N/A
4.8


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.

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

Does not include products
from the same brand


Approximately 15% of 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


5.0
4.7


Read more about our Overlapping Review History test.

Pass Brand Repeats

Brand Repeaters

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

N/A Phrase Repetition
We have not yet completed optimization for this test for Hanzi or Kanji.

N/A Reviewer Participation
We haven't collected sufficient data to run this test yet. See more

N/A Incentivized Reviews
We have not yet completed optimization for this test for Hanzi or Kanji.


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