Fig. 2

RRs (95% CIs) for the association between current use of low-dose aspirin and risk of CRC by case subgroup and subpopulation. RRs were adjusted for the matching variables (age, sex and year of index date) and number of PCP visits, smoking (any time before index date), insulin, NSAIDs, BMI (any time before index date) and oral steroids.. For all RRs other than those for each Dukes stage, all CRC cases were used irrespective of whether stage was recorded or not recorded (unknown). ^*Deaths within the first year after CRC diagnosis were considered to be fatal cases. ^†Record of an adenoma, colonoscopy or sigmoidoscopy. BMI, body mass index; CI, confidence interval; CVD, cardiovascular disease; GI, gastrointestinal, NSAIDS, non-steroidal anti-inflammatory drugs; PCP, primary care practitioner; RR, rate ratio