Left ventricular mass index (LVMI) among OSA categories stratified by sex. P values are based in multivariable linear regression adjusted by age, BMI, hypertension, diabetes, smoking status, systolic blood pressure, and self-reported use of statins, beta-blockers, angiotensin-blockers, or mineralocorticoid blockers assessed at both time points (the polysomnography and the echocardiography times) and by self-reported use of CPAP at the time of the echocardiography.