TABLE 6.

Comparison of Ventricular Arrhythmias During EST Interaction between Testing Time and Antiarrhythmic Use

	OR (95% CI)
Morning with antiarrhythmics	Ref.
Morning without antiarrhythmics	3.90 (0.61-25.1)
Afternoon with antiarrhythmics	2.61 (1.06-6.42)
Afternoon without antiarrhythmics	21.37 (5.98-76.4)

Adjusted by age, sex, and multicenters. Variables indicate time of EST and whether patient was prescribed an antiarrhythymic at the time of the test.

EST = exercise stress test; other abbreviations as in Table 2.