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A multivariate statistical approach to the assessment of nutrition status
Attention is drawn to the confusion which surrounds the concept of nutrition status and the problem of selecting an optimum subset of variables by which nutrition status can best be assessed is defined. Using a multidisciplinary data set of some 60 variables observed on 1898 school children from fou...
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| Format: | Thesis |
| Language: | English |
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Department of Statistical Sciences
2020
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| _version_ | 1867613182617452544 |
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| access_status_str | Open Access |
| author | Fellingham, Stephen A |
| author2 | Troskie, Casper G |
| author_browse | Fellingham, Stephen A Troskie, Casper G |
| author_facet | Troskie, Casper G Fellingham, Stephen A |
| author_sort | Fellingham, Stephen A |
| collection | Thesis |
| description | Attention is drawn to the confusion which surrounds the concept of nutrition status and the problem of selecting an optimum subset of variables by which nutrition status can best be assessed is defined. Using a multidisciplinary data set of some 60 variables observed on 1898 school children from four racial groups, the study aims to identify statistically, both those variables which are unrelated to nutrition status and also those which, although related, are so highly correlated that the measurement of all would be an unnecessary extravagance. It is found that, while the somatometric variables provide a reasonably good (but non-specific) estimate of nutrition status, the disciplines form meaningful groups and the variables of the various disciplines tend to supplement rather than replicate each other. Certain variables from most of the disciplines are, therefore, necessary for an optimum and specific estimate of nutrition status. Both the potential and the shortcomings of a number of statistical techniques are demonstrated. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/32011 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:05.102Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Department of Statistical Sciences |
| publisherStr | Department of Statistical Sciences |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/32011 A multivariate statistical approach to the assessment of nutrition status Fellingham, Stephen A Troskie, Casper G Statistical Sciences Nutrition Attention is drawn to the confusion which surrounds the concept of nutrition status and the problem of selecting an optimum subset of variables by which nutrition status can best be assessed is defined. Using a multidisciplinary data set of some 60 variables observed on 1898 school children from four racial groups, the study aims to identify statistically, both those variables which are unrelated to nutrition status and also those which, although related, are so highly correlated that the measurement of all would be an unnecessary extravagance. It is found that, while the somatometric variables provide a reasonably good (but non-specific) estimate of nutrition status, the disciplines form meaningful groups and the variables of the various disciplines tend to supplement rather than replicate each other. Certain variables from most of the disciplines are, therefore, necessary for an optimum and specific estimate of nutrition status. Both the potential and the shortcomings of a number of statistical techniques are demonstrated. 2020-05-29T13:13:47Z 2020-05-29T13:13:47Z 1972 2020-04-07T07:39:33Z Doctoral Thesis Doctoral https://hdl.handle.net/11427/32011 eng application/pdf Department of Statistical Sciences Faculty of Science |
| spellingShingle | Statistical Sciences Nutrition Fellingham, Stephen A A multivariate statistical approach to the assessment of nutrition status |
| thesis_degree_str | Doctoral |
| title | A multivariate statistical approach to the assessment of nutrition status |
| title_full | A multivariate statistical approach to the assessment of nutrition status |
| title_fullStr | A multivariate statistical approach to the assessment of nutrition status |
| title_full_unstemmed | A multivariate statistical approach to the assessment of nutrition status |
| title_short | A multivariate statistical approach to the assessment of nutrition status |
| title_sort | multivariate statistical approach to the assessment of nutrition status |
| topic | Statistical Sciences Nutrition |
| url | https://hdl.handle.net/11427/32011 |
| work_keys_str_mv | AT fellinghamstephena amultivariatestatisticalapproachtotheassessmentofnutritionstatus AT fellinghamstephena multivariatestatisticalapproachtotheassessmentofnutritionstatus |