Cancer causes & control : CCC · 2021
Risk factors for early-onset colorectal cancer: a population-based case-control study in Ontario, Canada.
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Chang Vicky C, Cotterchio Michelle, De Prithwish, Tinmouth Jill
Аннотация
PURPOSE: There has been an alarming increase in colorectal cancer (CRC) incidence among young adults aged < 50 years, and factors driving this upward trend are unknown. This study investigated associations between various medical, lifestyle, and dietary factors and risk of early-onset CRC (EO-CRC).
METHODS: A population-based case-control study was conducted in Ontario, Canada during 2018-2019. EO-CRC cases aged 20-49 years (n = 175) were identified from the Ontario Cancer Registry; sex- and age group-matched controls (n = 253) were recruited through random digit dialing. Data on potential a priori risk factors were collected using a web-based self-reported questionnaire. Odds ratios (OR) and 95% confidence intervals (CI) were estimated using multivariable logistic regression.
RESULTS: Family history of CRC in a first- or second-degree relative (OR 2.37; 95% CI 1.47-3.84), longer sedentary time (≥ 10 vs. < 5 h/day, OR 1.93; 95% CI 1.02-3.65), greater consumption of sugary drinks (≥ 7 vs. < 1 drinks/week, OR 2.99; 95% CI 1.57-5.68), and a more Westernized dietary pattern (quartile 4 vs. 1, OR 1.92; 95% CI 1.01-3.66) were each associated with an increased risk of EO-CRC. Conversely, calcium supplement use (OR 0.53; 95% CI 0.31-0.92), history of allergy or asthma (OR 0.62; 95% CI 0.39-0.98), and greater parity in females (≥ 3 vs. nulliparity, OR 0.29; 95% CI 0.11-0.76) were each associated with a reduced risk.
CONCLUSION: Modifiable factors, particularly sedentary behavior and unhealthy diet including sugary drink consumption, may be associated with EO-CRC risk. Our findings, if replicated, may help inform prevention strategies targeted at younger persons.
METHODS: A population-based case-control study was conducted in Ontario, Canada during 2018-2019. EO-CRC cases aged 20-49 years (n = 175) were identified from the Ontario Cancer Registry; sex- and age group-matched controls (n = 253) were recruited through random digit dialing. Data on potential a priori risk factors were collected using a web-based self-reported questionnaire. Odds ratios (OR) and 95% confidence intervals (CI) were estimated using multivariable logistic regression.
RESULTS: Family history of CRC in a first- or second-degree relative (OR 2.37; 95% CI 1.47-3.84), longer sedentary time (≥ 10 vs. < 5 h/day, OR 1.93; 95% CI 1.02-3.65), greater consumption of sugary drinks (≥ 7 vs. < 1 drinks/week, OR 2.99; 95% CI 1.57-5.68), and a more Westernized dietary pattern (quartile 4 vs. 1, OR 1.92; 95% CI 1.01-3.66) were each associated with an increased risk of EO-CRC. Conversely, calcium supplement use (OR 0.53; 95% CI 0.31-0.92), history of allergy or asthma (OR 0.62; 95% CI 0.39-0.98), and greater parity in females (≥ 3 vs. nulliparity, OR 0.29; 95% CI 0.11-0.76) were each associated with a reduced risk.
CONCLUSION: Modifiable factors, particularly sedentary behavior and unhealthy diet including sugary drink consumption, may be associated with EO-CRC risk. Our findings, if replicated, may help inform prevention strategies targeted at younger persons.