Close
Hashimoto's Thyroiditis: Lifestyle Interventions for Finding and Treating the Root Cause
More product info
From Izabella Wentz PharmD
This report was last updated 3/18/2023.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
Jump to Report Card
Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
*This is only a Preliminary Report
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)
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
Warn Overall Grade
FAIL Deleted Reviews
FAIL Unverified Purchases
FAIL Suspicious Reviewers
FAIL Phrase Repetition
WARN Reviewer Ease
PASS Rating Trend
PASS Word Count Comparison
PASS Overlapping Review History
PASS Brand Repeats
PASS Incentivized Reviews
N/A Reviewer Participation
Most Trusted Reviews
Good book [Go to full review]
Aug 3, 2021
100%
TRUST
TRUST
- Verified Purchaser
- Overlapping Review History: reviewed 1 of 9 top products
- Easy Grader (avg. rating: 4.5)
Least Trusted Reviews
I went on a very long, lonely journey by myself. ... [Go to full review]
Nov 21, 2015
0%
TRUST
TRUST
- Unverified Purchaser
- Contains repetitive phrases (show)
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Brand Repeater (2 of 60 reviews for this brand; avg rating: 5.0)
- Critical Reviewer (avg. rating: 4.3)
Analysis Details
Fail Deleted Reviews
We discovered a total of 69 deleted Reviews for this product, with an average rating of 4.8. 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.
Fail Unverified Purchases
348 of the 3,593 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 5.0 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.
Fail Suspicious Reviewers
One-Hit Wonders
Less than approximately 10% 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 25% of 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 4.9 while the reviewers who don't have any deleted reviews in their history 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.
Single-Day Reviewers
Less than approximately 10% of reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 3.0 while all other reviewers 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.
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
~9% of reviews
(5.0/5)
(5.0/5)
~6% of reviews
(5.0/5)
(5.0/5)
~6% of reviews
(5.0/5)
(5.0/5)
~3% of reviews
(5.0/5)
(5.0/5)
~4% of reviews
(5.0/5)
(5.0/5)
~3% of reviews
(5.0/5)
(5.0/5)
~3% of reviews
(5.0/5)
(5.0/5)
~3% of reviews
(5.0/5)
(5.0/5)
~3% of reviews
(5.0/5)
(5.0/5)
~4% of reviews
(4.7/5)
(4.7/5)
Common Phrases in Titles:
~3% of reviews
(4.5/5)
(4.5/5)
~4% of reviews
(5.0/5)
(5.0/5)
~3% of reviews
(5.0/5)
(5.0/5)
Approximately 30% of reviews use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.8 while reviews without substantial repetitive phrases 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.
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 4.6, 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.
4.6 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Rating Trend
-
- <10%
- Created on high-volume days
We didn't notice any signals that would indicate reviews were created unevenly over time.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Word Count Comparison
-
- <10%
- 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:
<10% also reviewed:
Why Do I Still Have Thyroid Symptoms? when My Lab... by Dr. Datis Kharrazian
<10% also reviewed:
Hashimoto's Protocol: A 90-Day Plan for... by Izabella Wentz
<10% also reviewed:
Thyroid Natural Glandular Allergy Research Group... by Allergy Research Group
<10% also reviewed:
Baby Food Storage Containers w Write What You... by Sprout Cups
<10% also reviewed:
Hyperbiotics Pro 15 Vegan Probiotic Supplement |... by Hyperbiotics
Does not include products
from the same brand
from the same brand
Less than approximately 10% 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.
Pass Brand Repeats
Brand Repeaters
Less than approximately 10% of 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.
-
- <10%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.