Disparities in oesophageal cancer risk by age, sex, and nativity in Kuwait:1980-2019
Affiliations
Affiliations
- Department of Community Medicine and Behavioural Sciences, College of Medicine, Kuwait University, PO Box 24923, Safat, 13110, Kuwait. saeed.akhtar@ku.edu.kw.
- Department of Surgery, Faculty of Medicine, McGill University, Montreal, QC, Canada.
- Ministry of Health, Kuwait City, Kuwait.
- Department of Surgery, College of Medicine, Kuwait University, Kuwait City, Kuwait.
- Department of Primary Care and Public Health, Brighton and Sussex Medical School, Brighton, UK.
- Department of Medicine, College of Medicine, Kuwait University, Kuwait City, Kuwait.
Abstract
Background: This cross-sectional cohort study assessed the inequalities in oesophageal carcinoma risk by age, sex and nativity in Kuwait: 1980-2019.
Methods: Using oesophageal cancer incidence data from the Kuwait National Cancer Registry, relevant Kuwaiti population data and World Standard Population as a reference, age-standardized incidence rates (ASIR) (per 100,000 person-years) overall and by subcohorts were computed. The incident oesophageal cancer cases count was overdispersed with excessive structural zeros, therefore, it was analyzed using multivariable zero-inflated negative binomial (ZINB) model.
Results: Overall ASIR of oesophageal cancer was 10.51 (95% CI: 6.62-14.41). The multivariable ZINB model showed that compared with the younger age category (< 30 years), the individuals in higher age groups showed a significant (p < 0.001) increasing tendency to develop the oesophageal cancer. Furthermore, compared with the non-Kuwaiti residents, the Kuwaiti nationals were significantly (p < 0.001) more likely to develop oesophageal cancer during the study period. Moreover, compared with 1980-84 period, ASIRs steadily and significantly (p < 0.005) declined in subsequent periods till 2015-19.
Conclusions: A high incidence of oesophageal cancer was recorded in Kuwait, which consistently declined from 1980 to 2019. Older adults (aged ≥ 60 years) and, Kuwaiti nationals were at high risk of oesophageal cancer. Focused educational intervention may minimize oesophageal cancer incidence in high-risk groups in this and other similar settings. Future studies may contemplate to evaluate such an intervention.
Keywords: Age-standardized incidence rate; Incidence rate ratio; Kuwait; Oesophageal carcinoma; Zero-inflated negative-binomial model.
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