Table 3.

PrEP knowledge

	Pre- training (T1)	Post- training (T2)*	1 M follow- up (T3)
How effective is PrEP?	61.1%	91.7%	89.2%
About how many people are using PrEP worldwide?	32.5%	77.1%	58.0%
Out of 100 PrEP users, about how many would you expect to experience common side effects such as headache, nausea or weight loss?	49.7%	97.5%	87.9%
How often should someone see a healthcare provider to monitor medication side effects, lab bloodwork, and STIs once they are using PrEP?	53.5%	91.7%	79.0%
For PrEP users, which parts of their bodies should be tested for gonorrhea and chlamydia regularly?	66.2%	89.8%	86.0%
One should not drink alcohol while on PrEP use. True or false?	21.0%	93.6%	89.8%
Does TDF/FTC have approval by the China FDA to be used as PrEP in China	17.2%	77.1%	66.2%
PrEP knowledge score	M (SD)	M (SD)	M (SD)
	3.78 (1.28)	6.25 (1.00)	5.65 (1.12)

M: mean; SD: standard deviation.

Analyses restricted to participants who had heard of PrEP prior to T1 and completed all three surveys (n=157).

^*We used McNemar’s test to compare each item’s correct response rate at T2 versus T1. All increases were significant at p<0.0001, results not shown in the table.