Doctor's Best Serrapeptase, Non-GMO, Vegan, Gluten Free, Supports Healthy Sinuses, 40,000...
More product info
From Doctor's BEST
Refresh the report to view the most up-to-date data available:
Our full report will examine much more data, but requires considerably more processing power. Enter your email to receive a notification when the full report is complete.
(more info)
Report Card
Most Trusted Reviews
TRUST
- Verified Purchaser
- Critical Reviewer (avg. rating: 3.2)
Least Trusted Reviews
TRUST
- Unverified Purchaser
- Never-Verified Reviewer
- Single-Day Reviewer (posted all reviews on Sep 29, 2015)
- Brand Loyalist (2 of 4 reviews for this brand; avg rating: 5.0)
- Easy Grader (avg. rating: 5.0)
Analysis Details
We discovered a total of 62 deleted Reviews for this product, with an average rating of 4.4. 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.
One-Hit Wonders
Approximately 20% of 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.
Take-Back Reviewers
Approximately 30% of 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.
(3.7/5)
Approximately 70% of reviews use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
-
- <10%
- Created on high-volume days
Read more about our Rating Trend test.
75 of the 4,531 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.
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.
-
- <10%
- Have an overrepresented word count
Read more about our Word Count Comparison test.
~20% also reviewed:
New Chapter Women's, Every... by New Chapter
<10% also reviewed:
Nordic Ware Deluxe Plate Cover, 10" by Nordic Ware
<10% also reviewed:
isotoner Men's Terry Moccasin Slipper... by isotoner
<10% also reviewed:
Squatty Potty The Original Bathroom Toilet Stool,... by Squatty Potty
<10% also reviewed:
ExceptionalSheets Rayon from Bamboo Mattress Pad... by ExceptionalSheets
<10% also reviewed:
Pompeian 100% Avocado Oil Cooking Spray, Mildly... by Pompeian
<10% also reviewed:
York Peppermint Patties Miniatures, 40-Ounce Bag by York
<10% also reviewed:
Mr Coffee Claredale Stainless Steel Whistling Tea... by Mr. Coffee
<10% also reviewed:
Farberware Plastic Utility Cutting Board by Farberware
Approximately 20% 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.
4.2 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Brand Repeaters
-
- <10%
- 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.