Subgroup analysis of percentage changes in abdominal aortic aneurysm (AAA) diameter. Forest plots of hazard ratios for confounding factors (age, smoking history, statin treatment, sex, and hypertension) associated with AAA growth. The impact of confounding factors was tested in terms of percentage changes in AAA diameter following treatment with candesartan (CAN) or amlodipine (AML). CKD, chronic kidney disease; LCL, lower confidence limit; SBP, systolic blood pressure; UCL, upper confidence limit.