Table 2 Cox proportional survival analyses according to measures of chronotropic incompetence (univariate analysis).

Variable	HR	95% CI	p Value	χ2
RHR	1.02	1.00 to 1.04	0.07	3.3
PHR	0.99	0.98 to 1.00	0.14	2.3
Delta HR	0.98	0.96 to 0.99	0.003	9.2
%Max‐PPHR	1.0	0.98 to 1.01	0.76	0.1
%HRR	0.99	0.98 to 1.00	0.20	1.7
Determination of chronotropic incompetence
%Max‐PPHR	1.13	0.62 to 2.08	0.69	0.2
%HRR	0.87	0.45 to 1.68	0.67	0.2
β Blocker use	0.52	0.29 to 0.95	0.03	4.3
Age	1.06	1.02 to 1.10	0.0004	13.9
Ve/Vco2 slope	1.05	1.05 to 1.08	<0.0001	13.1
pVo2	0.88	0.82 to 0.93	<0.0001	18.6

Hazard ratios for continuous variables apply per unit of the analysed variable.

CI, confidence interval; HR, hazard ratio.