Table 4.

Rates of STDs among users before and after starting an ED drug (per 100,000 men)

	Months before first ED drug fill				Months after first ED drug fill
	−12 mo.	−9 mo.	−6 mo.	−3 mo.	+3 mo.	+6 mo.	+9 mo.	+12 mo.
Chlamydia (%)	41	38	29	15	15	18	26	26
Gonorrhea (%)	12	9	3	3	3	6	6	9
Herpes (%)	9	6	3	0	0	0	3	12
HIV (%)	218	206	168	79	59	165	218	262†
Syphilis (%)	15	12	12	9	3	3	12	18
Other (%)	6	6	6	3	3	12	12	18
All (%)	289	265	212	103	82	200	265	327†
N	33,968	33,968	33,968	33,968	33,968	33,968	33,968	33,968

Notes:

^† p < 0.05. STD rates were computed for users by quarter for one year before and after first ED drug fill.