Table 3.

Operator Characteristics Before and During Transseptal Needle Study

Operator ID	Years of Experience With BRK‐1 Needle Before Study	Years of Experience With RF Needle Before Study	Preferred Needle Before Study	Number of Patients in Study Randomized to BRK‐1 Needle	Number of Patients in Study Randomized to RF Needle	Number of Crossover Patients From BRK‐1 to RF Needle
1	18	1	BRK‐1	4	5	3
2	10	0	BRK‐1	2	6	1
3	10	0	BRK‐1	4	0	0
4	8	2	RF	18	17	4
5	7	2	BRK‐1	2	1	1
6	5	2	RF	5	7	2
7	1	1	RF	1	0	0

ID indicates identification; RF, radiofrequency.