2: Represents you (1) and your partner (+1 = 2)

n: Represents you and your current partner’s number of exposure (this is a compounding 

number – assuming that each person you have had sex with has the exact same number of partners as you)

1: Represents your current partner (this remains the same)

x: The number of your current exposure

The easiest way to find ‘x’ is to refer to the sexual exposure chart. You can see how the numbers compound with the formula above.


What answer did you get?

Now you know whether or not you’re at risk. Whether you’ve slept with two or 25 different people, make an appointment for FREE and confidential STD/STI testing.

Call us at Choices For Women – 812.941.0872


Sexual Exposure – Are you at risk? 




*Sexual Exposure Chart – Info taken from the Gutmacher Institute

Photo by iStock