Nonsteroidal anti-inflammatory drugs (NSAIDs) use has consistently been associated with lower risk of colorectal cancer (CRC); however, studies showed inconsistent results on which cohort of individuals may benefit most. We performed multivariable logistic regression analysis to systematically test for the interaction between regular use of NSAIDs and other lifestyle and dietary factors on CRC risk among 11,894 cases and 15,999 controls. Fixed-effects meta-analyses were used for stratified analyses across studies for each risk factor and to summarize the estimates from interactions. Regular use of any NSAID, aspirin, or non-aspirin NSAIDs was significantly associated with a lower risk of CRC within almost all subgroups. However, smoking status and BMI were found to modify the NSAID-CRC association. Aspirin use was associated with a 29% lower CRC risk among never-smokers (OR = 0.71; 95% CI: 0.64, 0.79), compared to 19% and 17% lower CRC risk among smokers of pack-years below median (OR = 0.81; 95% CI: 0.71, 0.92) and above median (OR = 0.83; 95% CI: 0.74, 0.94), respectively (p-interaction = 0.048). The association between any NSAID use and CRC risk was also attenuated with increasing BMI (p-interaction = 0.075). Collectively, these results suggest that obese individuals and heavy smokers are unlikely to benefit as much as other groups from the prophylactic effect of aspirin against CRC.
This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 15 August 2018.
All research outputs
#22,919,377
of 34,350,842 outputs
Outputs from Cancer Research
#31,105
of 35,807 outputs
Outputs of similar age
#232,606
of 372,947 outputs
Outputs of similar age from Cancer Research
#475
of 653 outputs
Altmetric has tracked 34,350,842 research outputs across all sources so far. This one is in the 32nd percentile – i.e., 32% of other outputs scored the same or lower than it.
So far Altmetric has tracked 35,807 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 8.7. This one is in the 12th percentile – i.e., 12% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 372,947 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 36th percentile – i.e., 36% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 653 others from the same source and published within six weeks on either side of this one. This one is in the 26th percentile – i.e., 26% of its contemporaries scored the same or lower than it.
