Table 2.

Mean heart rate pre-ablation and during follow-up

Group	HR response	Pre-ablation	3 months	P-value	6 months	P-value	12 months	P-value
Overall		63.5 ± 8.4	69.1 ± 9.9	< 0.001	71.9 ± 9.4	< 0.001	71.2 ± 10.1	< 0.001
Group 1a		63.5 ± 8.3	68.4 ± 9.3	< 0.001	71.6 ± 9.4	< 0.001	71.0 ± 10.1	< 0.001
Group 2b	Abnormal sinus HR response	61.9 ± 10.6	84.6 ± 9.8	< 0.001	80.1 ± 6.5	0.007	76.3 ± 10.1	0.033
	HR increase ≥ 20 bpm	59.8 ± 10.0	83.2 ± 9.9	< 0.001	78.5 ± 5.2	0.017	75.5 ± 10.8	0.049
	IST	73.0 ± 1.0	94.0 ± 1.0	0.002	80.0 ± 8.7	0.261	76.7 ± 10.2	0.604

Data are mean heart rate ± standard deviation) in beats per minute. P-values are based on difference at follow-up compared with pre-ablation

^a Group 1 comprises patients with normal heart rate (HR) response

^b Group 2 comprises patients with abnormal sinus HR response (HR increase ≥ 20 bpm and/or inappropriate sinus tachycardia (IST))