Table 2.

Distribution of the underlying factors of CVS in patients

Factor	Propranolol	Erythromycin	Total	P-value
Pervious history of motion sickness	24(16.4%)	19(12.2%)	43(14.2%)	0.192
Family history of motion sickness	7(4.7%)	7(4.5%)	14(4.6%)	0.562
Family history of migraines	67(45.8%)	69(44.5%)	136(45.1%)	0.515
Pervious history of epilepsy	0(0)	1(0.6%)	1(0.33%)	0.666
Family history of epilepsy	2(1.3%)	2(1.2%)	4(1.3%)	0.451