در مقابل، شرکت کنندگان از هارلم و کیپ تاون بیشتر احتمال دارد که Tenofovir تشخیص داده شود، زمانی که از آنها خواسته شده بود روزانه PrEP را.
In contrast, participants from Harlem and Cape Town were more likely to have Tenofovir detected when they had been asked to take PrEP daily.