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Fagundo-Rivera J, Allande-Cussó R, Ortega-Moreno M, García-Iglesias JJ, Romero A, Ruiz-Frutos C, Gómez-Salgado J. Implications of Lifestyle and Occupational Factors on the Risk of Breast Cancer in Shiftwork Nurses. Healthcare (Basel) 2021; 9:649. [PMID: 34070908 PMCID: PMC8228409 DOI: 10.3390/healthcare9060649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 05/26/2021] [Accepted: 05/28/2021] [Indexed: 11/21/2022] Open
Abstract
Shift work that involves circadian disruption has been highlighted as a likely carcinogenic factor for breast cancer in humans. Also, unhealthy lifestyle habits observed in night work nurses could be causally related to an increase in the incidence of estrogen-positive breast tumours in this population. Assessing baseline risk of breast cancer in nurses is essential. The objective of this study was to analyze the risk of breast cancer that nurses had in relation to their lifestyle and labour factors related to shift work. A cross-sectional descriptive study through a questionnaire about sociodemographic variables, self-perception of health, and working life was designed. The sample consisted of 966 nurses. The relationship between variables was tested. A binary logistic regression and a classification and regression tree were performed. The most significant labour variables in relation to the risk of breast cancer were the number of years worked (more than 16 years; p < 0.01; OR = 8.733, 95% CI = 2.811, 27.134) and the total years performing more than 3 nights per month (10 or more years; p < 0.05; OR = 2.294, 95% CI = 1.008, 5.220). Also, the nights worked throughout life (over 500; OR = 4.190, 95% CI = 2.118, 8.287) were significant in the analysis. Nurses who had or ever had breast cancer valued their self-perceived health more negatively (p < 0.001) and referred a lower quality of sleep (p < 0.001) than the non-cases nurses. The occupational factors derived from night work could have several impacts on nurses' health and their family-work balance. Promoting healthy lifestyles, informing about shift work risks, and adjusting shift work schedules are critical methods to decrease the possible effects of circadian disruption in nurses.
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Affiliation(s)
- Javier Fagundo-Rivera
- Health Sciences Doctorate School, University of Huelva, 21071 Huelva, Spain;
- Centro Universitario de Enfermería Cruz Roja, University of Seville, 41009 Seville, Spain
- Escola Superior de Saúde, Universidade Atlântica, 2730-036 Barcarena, Portugal
| | | | - Mónica Ortega-Moreno
- Department of Economy, Faculty of Labour Sciences, University of Huelva, 21007 Huelva, Spain;
| | - Juan Jesús García-Iglesias
- Department of Sociology, Social Work and Public Health, Faculty of Labour Sciences, University of Huelva, 21007 Huelva, Spain; (C.R.-F.); (J.G.-S.)
| | - Adolfo Romero
- Nursing and Podiatry Department, Health Sciences School, University of Malaga, Instituto de Investigación Biomédica de Málaga (IBIMA), 29071 Málaga, Spain
| | - Carlos Ruiz-Frutos
- Department of Sociology, Social Work and Public Health, Faculty of Labour Sciences, University of Huelva, 21007 Huelva, Spain; (C.R.-F.); (J.G.-S.)
- Safety and Health Postgraduate Programme, Espíritu Santo University, Guayaquil 092301, Ecuador
| | - Juan Gómez-Salgado
- Department of Sociology, Social Work and Public Health, Faculty of Labour Sciences, University of Huelva, 21007 Huelva, Spain; (C.R.-F.); (J.G.-S.)
- Safety and Health Postgraduate Programme, Espíritu Santo University, Guayaquil 092301, Ecuador
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