Table 2.
Study findings.
| <20% RVP | >80% RVP | ||
|---|---|---|---|
| Number of patients | 565 | 4968 | P = .0016 |
| Age at implant (years) | 66.67 | 72.10 | P < .0001 |
| Male | 552 (98%) | 4889 (98%) | P = ns |
| Rate responsiveness | 516 (91%) | 4732 (95%) | P = .01 |
| Pacemaker type: | |||
| Single chamber | 182 (32%) | 887 (18%) | P = .0003 |
| Dual chamber | 383 (68%) | 4081 (82%) | |
| Indication: | |||
| Sinus node dysfunction | 373 (66%) | 2782 (56%) | P < .01 |
| Atrioventricular block | 192 (34%) | 2186 (44%) | |
| Average followup (years) ± SE | 5.1 ± 2.5 | 5.3 ± 2.4 | P = .062 |
| Deaths | 126 (22.3%) | 1113 (22.4%) | P = .39 |
| Average time to death (years) (95% confidence interval) | 4.34 (3.98–4.70) | 4.72 (4.60–4.84) | P < .0001 |
RVP = right ventricular pacing.