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Vitamina C 1000 mg – 180 Compresse Vegane Premium – Fornitura per 6 mesi – Acido Ascorbico ad...
More product info From Nutravita

Amazon Reviews for  Vitamina C 1000 mg – 180 Compresse Vegane Premium – Fornitura per 6 mesi – Acido Ascorbico ad Alta Resistenza – Con Bioflavonoidi Aggiunti e Rosa Canina – Supporta il Sistema Immunitario – Nutravita
Rating:
2,037 Ratings
("Ratings" vs. "Reviews")
0% of potentially unnatural reviews removed (why?)
Adjusted:
2,037 Ratings*




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Jump to Report Card

Report Info:

Report Card

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

Most Trusted Reviews

Ragazzi sembra sia la vitamina C più semplice...cosa intendo. Senza ... [Go to full review]
Feb 15, 2022      
100% TRUST
  • Verified Purchaser
  • Critical Reviewer (avg. rating: 3.7)


Least Trusted Reviews

buona qualità ottimo rapporto qualità prezzo [Go to full review]
Nov 8, 2020      
0% TRUST
  • Verified Purchaser
  • Overrepresented word count (6 words)
  • Contains repetitive phrases (show)
  • Overlapping Review History: reviewed 1 of 9 top products
  • Overrepresented Participation (posted 5 Reviews)
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Warn Deleted Reviews

We discovered a total of 2 deleted Reviews for this product, with an average rating of 5. 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 our Deleted Reviews test.

5.0 average rating of deleted reviews

5.0


Show distribution of deleted reviews

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 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


4.6
4.3


Read more about our Reviewer Ease test.


Warn Word Count Comparison

  • ~50%
  • 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 approximately 50% are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, the discrepancy in ratings between reviews with overrepresented word groups and all other reviews isn’t significant enough to rule out the possibility of it being due to random chance.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.9
4.7


Read more about our Word Count Comparison test.

Warn 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:
~6% of reviews
(5.0/5)
~12% of reviews
(5.0/5)
~4% of reviews
(5.0/5)
~4% of reviews
(4.5/5)
~4% of reviews
(4.5/5)
~4% of reviews
(4.0/5)
~4% of reviews
(5.0/5)
~4% of reviews
(5.0/5)
~4% of reviews
(4.5/5)
Show MoreShow Less
Common Phrases in Titles:
~4% of reviews
(5.0/5)


Approximately 30% of reviews use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.8
4.8


Read more about our Phrase Repetition test.

Pass Unverified Purchases

7 of the 2,037 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 Suspicious Reviewers

One-Hit Wonders

We didn't detect a substantial amount of One Hit Wonders.

Never-Verified Reviewers

We didn't detect a substantial amount of Never-Verified Reviewers.

Take-Back Reviewers


Less than approximately 10% of reviewers have had at least one of their past reviews for another product deleted. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from take-back reviewers

from reviewers without previously deleted reviews


4.8
4.8


Single-Day Reviewers


Less than approximately 10% of reviewers have written multiple reviews but posted all of them on a single day. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from single-day reviewers

from non-single-day reviewers


5.0
4.8


Read more about our Suspicious Reviewers test.

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

Does not include products
from the same brand


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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.4
4.9


Read more about our Overlapping Review History test.

Pass Brand Repeats

Brand Repeaters


Approximately 20% 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.

from Brand Repeaters

from Non-Repeaters


4.9
4.8


Read more about our Brand Repeats test.

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.

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