TABLE 4.

SLEEP-DISORDERED BREATHING AND VENTRICULAR ECTOPIC BEATS/h USING MULTIVARIABLE LINEAR REGRESSION

Model	SDB Status β Coefficient	SDB Status SE	SDB Status p Value
Ventricular Ectopic Beats/h (n = 504)
Unadjusted	0.89	0.22	< 0.0001
Demographics	0.79	0.21	0.0005
CVD risk factors	0.83	0.22	0.0002
CVD manifestations	0.88	0.21	< 0.0001
Demographics + CVD risk factors*	0.78	0.21	0.0003
Demographics + CVD risk factors + CVD manifestations†	0.76	0.22	0.0004
Demographics + CVD risk factors + CVD manifestations‡	0.69	0.21	0.0008

“Model” shows which set of variables used and the resulting effect size and statistical significance for SDB. This analysis is on the subset of patients with complete data on the above variables. The natural logarithm of ventricular ectopic beats/h was used, and to account for values of zero, a constant of 0.05 was added before log transformation.

^*Age, race, hypertension, triglycerides, and cholesterol kept in the model.

^†Age, race, triglycerides, cholesterol, and heart failure kept in the model (reduced data, n = 503).

^‡Age, race, triglycerides, cholesterol, and heart failure kept in the model (all data, n = 535).