Table 3.

Adverse events

	PIB (n = 21)	CEI (n = 21)	P-value
	n (%)	n (%)
Adverse effects
Nausea, vomiting	8(38.1)	5(23.8)	0.32
Urinary retention	2(9.5)	3(14.3)	0.63
Feeling dizzy on standing up	4(19.0)	1(4.7)	0.15