Statistical quality control charts: New tools for studying the body mass index of populations from the young to the elderly
- S. Ozilgen
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Background and aims
Statistical quality control charts (SQCCs) have been widely used in numerous manufacturing processes to keep fluctuations within the acceptable limits but no applications have been applied to weight management studies yet. The aims of the present study were (1) to show that using the mean Body Mass Index (BMI) values as the only indicator to assess the weight status of populations might be misleading in clinical weight management studies; and (2) to introduce a powerful tool, SQCCs, to keep fluctuations in BMIs within acceptable limits in a given population for healthy aging.
The study design was cross-sectional. The distributions of individual BMIs (n=829) between specified limits (USL=24.9 and LSL=18.5) and the pattern of BMI change by age were studied using X-charts, tolerance charts and a capability analysis.
The mean BMI increased in both genders by age. In some groups, although a significant number of people were outside the normal weight BMI limits the mean BMI values were within the normal limits (18.5 The results clearly indicate that using the mean BMIs as the only indicator might be misleading in weight management studies. This study introduces SQCCs as a potential tool for clinical nutrition studies to maintain the fluctuations of individual BMIs within acceptable limits for healthy aging populations
The results clearly indicate that using the mean BMIs as the only indicator might be misleading in weight management studies. This study introduces SQCCs as a potential tool for clinical nutrition studies to maintain the fluctuations of individual BMIs within acceptable limits for healthy aging populations
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- Statistical quality control charts: New tools for studying the body mass index of populations from the young to the elderly
The journal of nutrition, health & aging
Volume 15, Issue 5 , pp 333-339
- Cover Date
- Print ISSN
- Online ISSN
- Additional Links
- Quality control charts
- body mass index
- clinical weight management
- Industry Sectors
- S. Ozilgen (1)
- Author Affiliations
- 1. Department of Food Engineering, Yeditepe University, Kayisdagi, 34755, Istanbul, Turkey