Table 1.

Cost^∗ differences according to ablation technology

	Full sample, mean (95% CI)	Post-2015, mean (95% CI)	Pre-2015, mean (95% CI)	Cost difference, mean (95% CI)†
Pre-CA (pharmacological management)	18,348 (16,188; 20,509)	23,522 (19,880-27,165)	15,037 (12,442-17,632)	9054 (4663-13,446)
Post-CA	37,217 (34,235; 40,199)	39,226 (33,742; 44,709)	35,932 (32,498; 39,366)	2573 (-2336 to 7481)
Difference: post-CA–pre-CA	18,869 (15,570-22,168)‡	15,703 (9886-21,521)‡	20,895 (17,233; 24,555)‡	-

The pre-2015 sample represents patients who were treated with non-contact force sensing CA and the post-2015 group represents patients treated with contact force sensing CA.

CA, catheter ablation; CI, confidence interval.

^∗All values are CAD$.

^†Differences in costs estimated using an augmented inverse probability of treatment weighting with lasso variable selection (10-fold cross-validation) model with 95% CI constructed from robust standard errors.

^‡95% CI constructed from bootstrapped (1000 replications) standard errors.