Relative risk (95% CI) | P values | |
Unadjusted regression | 1.46 (1.17 to 1.83) | 0.001 |
Adjusted regression* | 2.10 (1.67 to 2.65) | <0.001 |
Propensity score-matched regression† | 2.29 (1.81 to 2.90) | <0.001 |
As above, adjusting for covariates with an SMD >0.10 | 2.24 (1.77 to 2.83) | <0.001 |
*Adjusted for patient age and gender, type of combination product (ARB, ACE inhibitor or beta blocker), and total number of antihypertensive defined daily dosages (DDD) in the FC/FDC, number of other antihypertensive prescription items, number of other cardiovascular drugs, number of antiplatelet/anticoagulant drugs, number of cholesterol drugs, number of diabetes drugs and number of other prescribed items.
†Propensity score generated from logit model including all covariates adjusted for in *.
ARB, angiotensin II receptor blockers; FC, free combination; FDC, fixed-dose combination; SMD, standardised mean differences.