Table 3.

Ability questions that correspond to the Fogg Behavior Model

ABILITY COMPONENT	Questions from survey used in the analysis
	Please tell me if you strongly agree, somewhat agree, somewhat disagree, strongly disagree or don’t know.
Mental effort	409. Using condoms during sexual intercourse is wise.
Mental effort	410. Using condoms during sexual intercourse is embarrassing.
	Please tell me how easy or difficult it would be to do each of the following. Would it be very easy, somewhat easy, somewhat difficult, very difficult or you don’t know.
Mental effort	420. How easy or difficult would it be for you to use condoms with a sexual partner?
Mental effort	421. How easy or difficult would it be for you to discuss condoms with a sexual partner?
Mental effort	422. How easy or difficult would it be for you to discuss condoms with your parents?
Mental effort	565. How easy or difficult is it for you to use contraception?
	Please tell me how confident you would feel, extremely confident, somewhat confident, somewhat uncertain, extremely uncertain or you don’t know.
Mental effort	423. How confident are you that you could get a condom if you wanted one?
Mental effort	424. How confident are you that you could have a condom with you when you needed it, that is if you decided to have sex?
Mental effort	425. How confident are you that you could use a condom correctly?
Mental effort	426. Imagine that you are having sex with someone you just met, and you feel it is important to use condoms. How confident are you that you could tell that person you want to use condoms?
Mental effort	427. Imagine that your partner uses birth control pills to prevent pregnancy. You want to use condoms to avoid getting an STD or HIV. How confident are you that you could convince your partner to also use condoms?
Mental effort	563. How confident are you that you could convince your partner to use a method of contraception?
Mental effort	564. How confident are you that you could use a method of contraception even if your partner doesn’t want to?
	Now I am going to ask you about the likelihood of some events. Please tell me if you would be extremely unlikely, somewhat unlikely, somewhat likely, extremely likely or don’t know.
Mental effort	429. How likely is it that your partner would like it if you had a condom with you?
Mental effort	430. During the next 3 months, how likely is it that you will try to persuade your partner to use condoms every time you have sex?
Mental effort	432. During the next 3 months, how likely is it that you will always have a condom with you?
Mental effort	517. Do you know of a place where you can obtain a method of contraception?
Routine	404. Do you carry condoms with you?