Table 4:

Multivariate Linear Regression Model Showing Determinants of LVMI Regression

Variables	β coefficient ± SE	p
Age, per 5y increment	−0.28±0.14	0.02
Male sex	0.18±0.24	0.1
Stage 1 hypertension at Y1*	−0.31±0.18	0.02
Stage 2 hypertension at Y1*	−0.38±0.21	0.009
Doppler COA mean gradient	0.16±0.43	0.5
Doppler aortic valve mean gradient	−0.08±0.14	0.1
Transcatheter stent therapy	0.23±0.35	0.3

COA: Coarctation of aorta; SE: standard error; LVMI: Left ventricular mass index

Severity of hypertension at Y1 modeled as categorical variable using the normal/elevated BP group as the reference group.

A diagnosis of hypertension pre-intervention was also independently associated with regression of LVMI (β coefficient ± SE: −0.49±0.23, p0.005). However, we did not input both pre-intervention hypertension and post-intervention hypertension in the same model because of collinearity