Table 2 Results of conditional logistic regression showing the association between the last prescription prior to study index date and colorectal cancer diagnosis.

From: The association between colorectal cancer and prior antibiotic prescriptions: case control study

 AntibioticsQuinolonesPenicillin
Last prescription
   Previous year1.17 (1.13–1.21)1.11 (1.01–1.22)1.06 (1.02–1.09)
   ≥2 years1.05 (1.01–1.10)1.01 (0.89–1.13)1.07 (1.03–1.12)
   ≥3 years1.07 (1.01–1.13)1.12 (0.99–1.27)1.12 (1.06–1.18)
   ≥5 years1.09 (1.04–1.15)1.22 (1.13–1.32)1.23 (1.17–1.29)
   ≥10 years1.16 (1.03–1.31)1.32 (1.16–1.50)1.19 (1.07–1.32)
  1. Note: Analyses adjusted for BMI, smoking, ethnicity, deprivation, cholesterol, CVD, type II diabetes, COPD, depression, dementia, and liver disorders