Table 4.
Univariate and Multivariable Analyses of Predictors Associated With Transseptal Time
| Variable | Univariate Analysis | Multivariable Analysis | ||
|---|---|---|---|---|
| Percent Increase in Transseptal Time* (95% CI) | P Value | Percent Increase in Transseptal Time* (95% CI) | P Value | |
| Age (per 10‐year increase) | 15.4% (−5.1 to 35.9) | 0.138 | 18.2% (1.6 to 34.8) | 0.032 |
| Previous transseptal puncture | 34.1% (−16.6 to 84.8) | 0.184 | 31.0% (−10.0 to 72.1) | 0.136 |
| Radial view intracardiac ultrasound | 87.5% (29.6 to 145.3) | 0.004 | 79.6% (29.6 to 129.7) | 0.002 |
| Attending physician experience (per 1‐year increase) | 9.8% (4.1 to 15.5) | 0.001 | 8.3% (3.2 to 13.3) | 0.002 |
| Conventional needle | 67.8% (23.3 to 112.2) | 0.003 | 73.3% (35.8 to 110.9) | <0.001 |
| Male sex | −22.0% (−71.9 to 27.9) | 0.381 | * | — |
| Congestive heart failure | −29.2% (−114.5 to 56.1) | 0.497 | * | — |
| Fellow physician experience (per 1‐year increase) | −5.2% (−57.1 to 46.7) | 0.842 | * | — |
| Biplane fluoroscopy | 34.8% (−39.9 to 109.6) | 0.356 | * | — |
CI indicates confidence interval.
*
The β coefficient from regression analyses represents the percent increase in transseptal time per unit increase of continuous predictor variables or as associated with individual categorical variables.
*
Covariates failing to meet criteria for inclusion in the multivariable model (as described in the Methods and Results section).