PEREZGONZALEZ Jose D (2012). BNI of kinds of corn chips (descriptive statistics). Journal of Knowledge Advancement & Integration (ISSN 1177-4576), 2012, pages 300-304. [Printer friendly]
BNI of generic brands (description)
Some corn chips4 are sold under a generic brand (eg, a supermarket brand) while others are sold under proprietary brands. Thus, it is of interest to test whether such characteristic informs about overall nutritional balance (BNI) and, thus, whether it may help choose more balanced products. As part of a research on the nutritional balance of corn chips (2012b)3, Perezgonzalez also assessed whether generic and proprietary brands differed in regards to overall nutritional balance. This article provides descriptive information both about the sample of products under research (foodBNI) as well as about hypothetical diets based on those products (dietBNI).
foodBNI
Named brands were more abundant than generic brands, overall. The distribution of nutritional balance within each group was also different, with most generic products clustering higher than most named products. Indeed, the proprietary brand group had a median of BNI 57.88 and the middle 68% of products ranged between BNI 39 (P16) and BNI 71 (P84). In comparison, the generic brand group had a median of BNI 71.24 and the middle 68% of products ranged between BNI 55 and BNI 77. In both cases, the means appeared slightly more balanced, being off-centered towards the 16th percentile.
Both types of products, thus, appeared as extremely unbalanced5. Even so, the difference between both groups was over 10 units on the BNI scale, a moderate difference in favor of the proprietary brands.
Illustration 1: Kind of corn chips | |||||||||
---|---|---|---|---|---|---|---|---|---|
Generic brand | |||||||||
Unbalance | No | Yes | |||||||
=0 | |||||||||
>0 | |||||||||
≥10 | |||||||||
≥20 | 2 | ||||||||
≥30 | 2 | ||||||||
≥40 | 7 | ||||||||
≥50 | 5 | 3 | |||||||
≥60 | 6 | ||||||||
≥70 | 4 | 8 | |||||||
≥80 | |||||||||
≥90 | |||||||||
≥100 | |||||||||
≥110 | |||||||||
≥120 | |||||||||
≥130 | |||||||||
≥140 | |||||||||
≥150 | |||||||||
≥160 | |||||||||
≥170 | |||||||||
≥180 | |||||||||
≥190 | |||||||||
≥200 | |||||||||
Median | 57.88 | 71.24 | |||||||
SPR | 15.83 | 11.14 | |||||||
P16 | 38.86 | 54.90 | |||||||
P84 | 70.52 | 77.17 | |||||||
RSkew | -3.19 | -5.21 | |||||||
Mean | 53.81 | 68.29 | |||||||
StDev | 14.77 | 9.30 | |||||||
zSkew | -0.05 | -1.43 | |||||||
zKurt | -1.19 | -0.62 | |||||||
Mean diff6 | 10.41 | ||||||||
Effect size7 | 0.77 |
dietBNI
As part of two hypothetical diets where the corresponding generic and named products contributed the same weight of chips, the resulting nutritional composition of such diets would still be highly unbalanced (around BNI 47 for proprietary brands, and around BNI 55 for generic brands, when estimating fiber). The mean difference for both diets would be small and in favor of the proprietary brands.
Illustration 2: Diet's nutritional balance corn chips | ||||||||
---|---|---|---|---|---|---|---|---|
Corn chips | Protein | Carbs | Sugar | Fat | Sat.fat | Fiber | Sodium | BNI |
Named brand (unest) | 7.7 | 58.9 | 2.5 | 25.2 | 8.0 | 2.6 | 549.0 | 50.75 |
Named brand (est) | 7.7 | 58.9 | 2.5 | 25.2 | 8.0 | 3.7* | 549.0 | 47.09 |
Generic brand (unest) | 6.2 | 58.9 | 2.7 | 25.2 | 10.3 | 0.0 | 687.4 | 67.47 |
Generic brand (est) | 6.2 | 58.9 | 2.7 | 25.2 | 10.3 | 3.7* | 687.4 | 55.14 |
Mean difference (unest)6 | 16.72 | |||||||
Mean difference (est)6 | 8.05 | |||||||
(*) Fiber content estimated from 'Doritos Burn'. |
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Author
Jose D PEREZGONZALEZ (2012). Massey University, Turitea Campus, Private Bag 11-222, Palmerston North 4442, New Zealand. (JDPerezgonzalez).
Want to know more?
- BNI analysis of individual products
- You can access either the BNI™ database or the 'BNI™ journal (2012, issue 6) - Corn utopia' for individual nutrition analyses of each food product in the sample.
- Wiki of Science - BNI of kinds of corn chips (further knowledge)
- Two Wiki of Science pages provide further introductory and inferential information about the nutritional balance of kinds of corn chips.
- Wiki of Science - Nutritional balance of corn chips
- This Wiki of Science page provides an introduction to the BNI of corn chips, irrespective of brand.
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