Validity and reliability of a questionnaire developed to explore nutrition determinants among construction workers in Gauteng, South Africa
Objectives: The nutrition of construction workers is related to their health and safety (H&S) at work. Research on the factors influencing construction workers’ food choices and overall nutrition is limited, in South Africa and indeed Africa as a whole. The present paper aims to develop and vali...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2019-04-01
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| Series: | The South African Journal of Clinical Nutrition |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/16070658.2018.1438337 |
| _version_ | 1797678775461216256 |
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| author | Chioma Okoro Innocent Musonda Justus Agumba |
| author_facet | Chioma Okoro Innocent Musonda Justus Agumba |
| author_sort | Chioma Okoro |
| collection | DOAJ |
| description | Objectives: The nutrition of construction workers is related to their health and safety (H&S) at work. Research on the factors influencing construction workers’ food choices and overall nutrition is limited, in South Africa and indeed Africa as a whole. The present paper aims to develop and validate a questionnaire on factors influencing construction workers’ food choices. Design: The study adopted a quantitative approach; 42 items, divided into six constructs, were used to develop a field-survey questionnaire after a detailed literature review. Setting: The study was conducted on eight construction sites (consisting of five building construction and three road construction sites), chosen through heterogeneity sampling, in Midrand, Centurion, Johannesburg and Samrand. Subjects: Participants included construction workers actively involved in site activities. Outcome measures: Principal components analysis (PCA) was conducted to examine the structures and validity of the constructs. Cronbach’s alpha test and mean inter-item correlations were used to examine internal consistency reliability. Results: After repeated factor analysis, the questionnaire on food-choice factors revealed seven different factors: food context, biological factors, nutritional knowledge, personal ideas and systems, economic factors, resources and cultural background. These factors explained 60.09% variance. Cronbach’s alpha coefficients ranged from 0.62 to 0.85, signifying good internal consistency reliability. Conclusion: The determinants of construction workers’ food choices are vital considerations when designing and implementing nutrition interventions in the South African construction industry. Future research can adopt the instrument and developed model when conducting psychometric evaluations of construction workers’ food-choice determinants. |
| first_indexed | 2024-03-11T23:04:39Z |
| format | Article |
| id | doaj.art-b90f4c4265e44705be67ad14c07a58d3 |
| institution | Directory Open Access Journal |
| issn | 1607-0658 2221-1268 |
| language | English |
| last_indexed | 2024-03-11T23:04:39Z |
| publishDate | 2019-04-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | The South African Journal of Clinical Nutrition |
| spelling | doaj.art-b90f4c4265e44705be67ad14c07a58d32023-09-21T13:38:26ZengTaylor & Francis GroupThe South African Journal of Clinical Nutrition1607-06582221-12682019-04-01322323910.1080/16070658.2018.14383371438337Validity and reliability of a questionnaire developed to explore nutrition determinants among construction workers in Gauteng, South AfricaChioma Okoro0Innocent Musonda1Justus Agumba2University of Johannesburg, Johannesburg, South AfricaUniversity of Johannesburg, Johannesburg, South AfricaUniversity of Johannesburg, Johannesburg, South AfricaObjectives: The nutrition of construction workers is related to their health and safety (H&S) at work. Research on the factors influencing construction workers’ food choices and overall nutrition is limited, in South Africa and indeed Africa as a whole. The present paper aims to develop and validate a questionnaire on factors influencing construction workers’ food choices. Design: The study adopted a quantitative approach; 42 items, divided into six constructs, were used to develop a field-survey questionnaire after a detailed literature review. Setting: The study was conducted on eight construction sites (consisting of five building construction and three road construction sites), chosen through heterogeneity sampling, in Midrand, Centurion, Johannesburg and Samrand. Subjects: Participants included construction workers actively involved in site activities. Outcome measures: Principal components analysis (PCA) was conducted to examine the structures and validity of the constructs. Cronbach’s alpha test and mean inter-item correlations were used to examine internal consistency reliability. Results: After repeated factor analysis, the questionnaire on food-choice factors revealed seven different factors: food context, biological factors, nutritional knowledge, personal ideas and systems, economic factors, resources and cultural background. These factors explained 60.09% variance. Cronbach’s alpha coefficients ranged from 0.62 to 0.85, signifying good internal consistency reliability. Conclusion: The determinants of construction workers’ food choices are vital considerations when designing and implementing nutrition interventions in the South African construction industry. Future research can adopt the instrument and developed model when conducting psychometric evaluations of construction workers’ food-choice determinants.http://dx.doi.org/10.1080/16070658.2018.1438337construction workersfood choicehealthnutrition determinantsreliabilityvalidity |
| spellingShingle | Chioma Okoro Innocent Musonda Justus Agumba Validity and reliability of a questionnaire developed to explore nutrition determinants among construction workers in Gauteng, South Africa The South African Journal of Clinical Nutrition construction workers food choice health nutrition determinants reliability validity |
| title | Validity and reliability of a questionnaire developed to explore nutrition determinants among construction workers in Gauteng, South Africa |
| title_full | Validity and reliability of a questionnaire developed to explore nutrition determinants among construction workers in Gauteng, South Africa |
| title_fullStr | Validity and reliability of a questionnaire developed to explore nutrition determinants among construction workers in Gauteng, South Africa |
| title_full_unstemmed | Validity and reliability of a questionnaire developed to explore nutrition determinants among construction workers in Gauteng, South Africa |
| title_short | Validity and reliability of a questionnaire developed to explore nutrition determinants among construction workers in Gauteng, South Africa |
| title_sort | validity and reliability of a questionnaire developed to explore nutrition determinants among construction workers in gauteng south africa |
| topic | construction workers food choice health nutrition determinants reliability validity |
| url | http://dx.doi.org/10.1080/16070658.2018.1438337 |
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