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Amazon.com > Health & Household > Vitamins, Minerals & Supplements > Digestive Supplements > Probiotics
Nutrition Now Pb 8 Pro-biotic Acidophilus for Life -- 120 Capsules X 2
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From Nutrition Now
This report was last updated 10/12/2018.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: While Amazon.com claims 119 Ratings, we counted 88 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Warn Overall Grade
FAIL Deleted Reviews
FAIL Suspicious Reviewers
FAIL Reviewer Ease
WARN Word Count Comparison
PASS Rating Trend
PASS Unverified Purchases
PASS Phrase Repetition
PASS Overlapping Review History
PASS Reviewer Participation
PASS Brand Repeats
PASS Incentivized Reviews
Most Trusted Reviews
Very effective in rectifying digestive issues. This was prescribed by ... [Go to full review]
Jan 26, 2017
100%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (1 deleted Review; avg. rating: 3.0)
- Overrepresented Participation (posted 45 Reviews)
- Critical Reviewer (avg. rating: 4.0)
Least Trusted Reviews
First time using, noticed less bloating and gas. [Go to full review]
Oct 25, 2015
10%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (8 words)
- Easy Grader (avg. rating: 4.7)
Analysis Details
Fail Deleted Reviews
We discovered a total of 38 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.
Fail Suspicious Reviewers
Take-Back Reviewers
48 of the 88 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.
Fail 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 4.4. 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.
4.6 Product's Average Ease Score
4.4 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn Word Count Comparison
-
- 69%
- 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 61 reviews (or 69%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.
Pass Rating Trend
-
- 0%
- Created over 24 days
We counted 88 reviews for this product over the span of 1,406 days, an average of 0.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day.
However, we see the following 24 days exceeding this threshold:
Read more about our Rating Trend test.
However, we see the following 24 days exceeding this threshold:
- 10 Reviews on Jan 8, 2017 (Avg. rating: 4.7)
- 9 Reviews on Feb 23, 2017 (Avg. rating: 4.2)
- 7 Reviews on Jan 25, 2017 (Avg. rating: 5.0)
- 7 Reviews on Feb 12, 2017 (Avg. rating: 5.0)
- 7 Reviews on Sep 12, 2016 (Avg. rating: 4.6)
- 7 Reviews on Jan 30, 2017 (Avg. rating: 4.4) Show All
Read more about our Rating Trend test.
Pass Unverified Purchases
2 of the 88 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.
Pass Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
4 of the 88 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.
Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
3% also reviewed:
The Fast Metabolism Diet: Eat More Food and Lose... by Haylie Pomroy
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Amy's Soups, Low Fat No Chicken Noodle, 14.1 Ounce by Amy's
3% also reviewed:
Camco Premium Freshwater Drinking Water Hose by Camco
3% also reviewed:
Epica 18 oz Clear Glass Bottles with Lids |... by Epica
3% also reviewed:
Amazon Prime Video by Amazon.com
2% also reviewed:
Mrs. Meyers Liquid Hand Soap Refill Lemon Verbena... by Mrs. Meyer's Clean Day
2% also reviewed:
Hippo Issues by Michael Mayer
2% also reviewed:
Men's Holeless Leather Ratchet Click Belt -... by VINICIOBELT
Does not include products
from the same brand
from the same brand
16 of the 88 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 Reviewer Participation
-
- 28%
- 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 25 reviewers (or 28%) 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.
Pass Brand Repeats
Brand Repeaters
20 of the 88 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.
-
- 0%
- 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.