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Melatonin Fast Dissolve From Natrol Report Feedback

Pass Reviews appear natural

Original:

29 Reviews

Adjusted:

20 Reviews

85%
95%

View/Edit Adjustment
How is this calculated
Report Last Updated: Jul 19, 2017
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Report Card

Click a test to jump to details

FAIL Suspicious Reviewers
WARN Rating Trend
WARN Reviewer Ease
WARN Overlapping Review History
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Reviewer Participation
PASS Brand Repeats
PASS Sample Reviews
PASS Deleted Reviews
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Other analysis for this product:

Melatonin Fast Dissolve (5mg) From Natrol

Warn Unnatural reviews possible


Original:

166 Reviews


Adjusted:

127 Reviews

Most Trusted Reviews

10/10
User did not leave written text for this review. [Go to full review]
Apr 9, 2017      
100% TRUST
  • Verified Purchaser
  • Easy Grader (avg. rating: 10.0)


Least Trusted Reviews

9/10
Works well and helped me sleep [Go to full review]
Jul 31, 2013      
40% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • One-Hit Wonder
  • Easy Grader (avg. rating: 9.0)


Analysis Details

Note: While Bodybuilding.com claims 29 reviews, we counted 27 available on their site.

Fail Suspicious Reviewers

One-Hit Wonders


7 of the 27 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, the discrepancy in ratings between the One-Hit Wonders and reviewers who have posted more than one review isn't significant enough to rule out the possibility of it being due to random chance.

from one-hit wonders

from reviewers with more than one review


9.6
9.3


Take-Back Reviewers


5 of the 27 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


9.0
9.4


Single-Day Reviewers


5 of the 27 reviewers have written multiple reviews but posted all of them on a single day. While this is more Single-Day Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.

from single-day reviewers

from non-single-day reviewers


8.6
9.5


Read more about our Suspicious Reviewers test.

Warn Rating Trend

  • 7%
  • Created over 1 day

We counted 27 reviews for this product over the span of 1,411 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 1 day exceeding this threshold:In total, we found that 2 reviews were created on just 1 day. Although any days with a larger number of reviews than expected is suspicious, these reviews do not appear to have a significant impact on the overall rating.

from reviews created on high volume days

from reviews created on normal volume days


8.5
9.4


Read more about our Rating Trend test.

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 9, while the average ease score for reviewers in this category is 8.8. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.

9.0 Product's Average Ease Score

8.8 Category's Average Ease Score


9.0
8.8


Read more about our Reviewer Ease test.


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

15% also reviewed:
Pre JYM by JYM

11% also reviewed:
Opti-Men by Optimum Nutrition

11% also reviewed:
C4 Original by Cellucor

11% also reviewed:
COR-Performance Whey by Cellucor

11% also reviewed:
CLA by RSP Nutrition

7% also reviewed:
N.O.-Xplode by BSN

7% also reviewed:
AMINOx by BSN

7% also reviewed:
Clear Muscle by MuscleTech

Does not include products
from the same brand


14 of the 27 reviewers have substantial overlapping product review history. While this is more than we'd expect to see, it does not appear to have a significant impact on the overall rating.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


8.9
9.8


Read more about our Overlapping Review History test.

Pass Unverified Purchases

1 of the 27 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


10.0
9.3


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 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:
2 reviews
2 reviews


3 of the 27 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


9.7
9.3


Read more about our Phrase Repetition 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 Brand Repeats

Brand Repeaters


3 of the 27 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


8.0
9.5


Read more about our Brand Repeats test.

Pass Sample Reviews
  • 0%
  • Mentioned the word "Sample"
We didn't find the word "sample" used in any reviews
Read more about our Sample Reviews test.

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:
  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.


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