Figure 1.

Numbers of patients in the study population and in the three randomisation groups are listed together with the numbers of events during follow up in each randomisation group. The patients are further divided into groups with (+BTS) and without brady-tachy syndrome (−BTS). AAIR, rate adaptive single chamber atrial pacing; AF, atrial fibrillation; DDDR-l, rate adaptive dual chamber pacing with the pacemaker programmed with a fixed atrioventricular (AV) delay of 300 ms; DDDR-s, rate adaptive dual chamber pacing with the pacemaker programmed with a rate adaptive AV delay ⩽ 150 ms and ventricular capture; TE, thromboembolic event.