Novel risk factors for primary prevention of oesophageal carcinoma: A case-control study from Sri Lanka
File(s)
Published version
Author(s)
Talagala, Ishanka Ayeshwari
Nawarathne, Metthananda
Arambepola, Carukshi
Type
Journal Article
Abstract
Background
Oesophageal carcinoma (OC) is one of the leading cancers in Sri Lanka. Its increasing incidence despite the implementation of various preventive activities addressing the conventional risk factors indicates the possibility of the existence of novel, country-specific risk factors. Thus, the identification of novel risk factors of OC specific to Sri Lanka is crucial for implementation of primary prevention activities.
Methods
A case-control study was conducted among 49 incident cases of OC recruited from the National Cancer Institute, Maharagama using a non-probability sampling method, and unmatched hospital controls (n = 196) excluded of having OC recruited from the endoscopy unit of the National Hospital of Sri Lanka. Data were collected using an interviewer administered questionnaire. Risk factors for OC were assessed by odds ratio (OR) with 95% confidence interval (CI). The risk factors were adjusted for possible confounding by logistic regression analysis.
Results
Of the study population, OC was common among males (69%) and the majority presented with squamous cell carcinoma (65%) at late stages (Stage IV: 45%; Stage III: 37%). Following adjusting for confounders, the risk factor profile for OC included; age > 65 years (OR = 4.0; 95% CI: 1.2–14.2); family history of cancer (OR = 5.04; 95% CI: 1.3–19.0); sub-optimal consumption of dietary fibre (OR = 3.58; 95% CI: 1.1–12.3); sub-optimal consumption of anti-oxidants (OR = 7.0; 95% CI: 2.2–22.5); over-consumption of deep fried food (OR = 6.68; 95% CI:2.0–22.6); ‘high risk’ alcohol drinking (OR = 11.7; 95% CI: 2.8–49.4); betel quid chewing (OR = 6.1; 95% CI: 2.0, 20.0); ‘low’ lifetime total sports and exercise activities (MET hours/week/year) (OR = 5.83; 95% CI: 1.5–23.0); agrochemicals exposure (OR = 6.57; 95% CI: 1.4–30.3); pipe-borne drinking water (OR = 5.62; 95% CI:1.7–18.9) and radiation exposure (OR = 4.64; 95% CI: 1.4–15.5). Significant effect modifications were seen between betel quid chewing and male sex (p = 0.01) and between ever exposure to radiation and age over 65 years (p = 0.04).
Conclusions
Risk profile for OC includes novel yet modifiable risk factors in relation to diet, occupation, environment and health. Primary prevention should target these to combat OC in Sri Lanka.
Oesophageal carcinoma (OC) is one of the leading cancers in Sri Lanka. Its increasing incidence despite the implementation of various preventive activities addressing the conventional risk factors indicates the possibility of the existence of novel, country-specific risk factors. Thus, the identification of novel risk factors of OC specific to Sri Lanka is crucial for implementation of primary prevention activities.
Methods
A case-control study was conducted among 49 incident cases of OC recruited from the National Cancer Institute, Maharagama using a non-probability sampling method, and unmatched hospital controls (n = 196) excluded of having OC recruited from the endoscopy unit of the National Hospital of Sri Lanka. Data were collected using an interviewer administered questionnaire. Risk factors for OC were assessed by odds ratio (OR) with 95% confidence interval (CI). The risk factors were adjusted for possible confounding by logistic regression analysis.
Results
Of the study population, OC was common among males (69%) and the majority presented with squamous cell carcinoma (65%) at late stages (Stage IV: 45%; Stage III: 37%). Following adjusting for confounders, the risk factor profile for OC included; age > 65 years (OR = 4.0; 95% CI: 1.2–14.2); family history of cancer (OR = 5.04; 95% CI: 1.3–19.0); sub-optimal consumption of dietary fibre (OR = 3.58; 95% CI: 1.1–12.3); sub-optimal consumption of anti-oxidants (OR = 7.0; 95% CI: 2.2–22.5); over-consumption of deep fried food (OR = 6.68; 95% CI:2.0–22.6); ‘high risk’ alcohol drinking (OR = 11.7; 95% CI: 2.8–49.4); betel quid chewing (OR = 6.1; 95% CI: 2.0, 20.0); ‘low’ lifetime total sports and exercise activities (MET hours/week/year) (OR = 5.83; 95% CI: 1.5–23.0); agrochemicals exposure (OR = 6.57; 95% CI: 1.4–30.3); pipe-borne drinking water (OR = 5.62; 95% CI:1.7–18.9) and radiation exposure (OR = 4.64; 95% CI: 1.4–15.5). Significant effect modifications were seen between betel quid chewing and male sex (p = 0.01) and between ever exposure to radiation and age over 65 years (p = 0.04).
Conclusions
Risk profile for OC includes novel yet modifiable risk factors in relation to diet, occupation, environment and health. Primary prevention should target these to combat OC in Sri Lanka.
Date Issued
2018-11-19
Date Acceptance
2018-10-19
Citation
BMC Cancer, 2018, 18
ISSN
1471-2407
Publisher
BioMed Central
Journal / Book Title
BMC Cancer
Volume
18
Copyright Statement
© 2018 The Author(s). Open Acces This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver
(http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
(http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
License URL
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000451293400003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Life Sciences & Biomedicine
Oncology
Oesophageal carcinoma
Novel risk factors
Primary prevention
Sri Lanka
SQUAMOUS-CELL CARCINOMA
BODY-MASS
CANCER
POPULATION
ADENOCARCINOMAS
ASSOCIATION
DIAGNOSIS
HABITS
FOODS
Publication Status
Published
Article Number
1135