Schiff Melatonin Ultra. 365 Tablets. 3mg Melatonin + 25mg L-Theanine + 25mg GABA + Chamomile &...
More product info
From Schiff
We're refreshing the the report to provide the most up-to-date data available.
This should only take a few moments.
Report Card
Most Trusted Reviews
TRUST
- Verified Purchaser
- Overrepresented Participation (posted 7 Reviews)
- Critical Reviewer (avg. rating: 2.7)
Least Trusted Reviews
TRUST
- Unverified Purchaser
- Overrepresented word count (14 words)
- Overlapping Review History: reviewed 1 of 9 top products
- Critical Reviewer (avg. rating: 4.2)
Analysis Details
We discovered a total of 15 deleted Reviews for this product, with an average rating of 4.2. 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:
- 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.
13 of the 293 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.7 while the verified purchasers have rated this product an average of 4.5. 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.
Take-Back Reviewers
147 of the 293 reviewers have had at least one of their past reviews for another product deleted. The Take-Back Reviewers have rated this product an average of 4.6 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 4.3. 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.
-
- 52%
- 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 2 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 152 reviews (or 52%) are within an overrepresented word count group. These reviews have rated this product an average of 4.6, while all other reviews have rated this product an average of 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.
7% also reviewed:
AsaVea Fungus Stop, Anti-Fungal Nail Solution,... by AsaVea
2% also reviewed:
Certified Refurbished Fire TV Stick with Alexa... by Amazon Renewed
2% also reviewed:
Fire TV Stick bundle with Echo Dot (2nd Gen) -... by Amazon
2% also reviewed:
American Greetings Mickey Mouse Party Supplies... by American Greetings
2% also reviewed:
Quest Nutrition Protein Bar, Apple Pie, 20g... by Quest Nutrition
2% also reviewed:
The Man In The High Castle - Season 1 (4K UHD) by Alexa Davalos
2% also reviewed:
Zacurate Pro Series 500DL Fingertip Pulse... by Zacurate
2% also reviewed:
Echo Dot (2nd Generation) - Smart speaker with... by Amazon
from the same brand
44 of the 293 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.8 while the reviewers who have a more unique product review history rated this product an average of 4.3. 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.
-
- 0%
- Created on high-volume days
Read more about our Rating Trend test.
(4.4/5)
(5.0/5)
(5.0/5)
(4.8/5)
(4.0/5)
(4.2/5)
(5.0/5)
(4.7/5)
(5.0/5)
17 of the 293 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.
-
- 25%
- From reviewers with an overrepresented participation
We see the following 1 participation group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 72 reviewers (or 25%) are within an overrepresented participation group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
4.3 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Brand Repeaters
33 of the 293 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.
-
- 0%
- Admitted to receiving an incentive
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.