1. What is your current gender identity? (check and/or circle all that apply)

□ Female

□ Male

□ Transgender male/transman/FTM

□ Transgender female/transwoman/MTF

□ Genderqueer

□ Additional category (please specify):__________

□ Decline to answer

2. What sex were you assigned at birth? (check one)

□ Male

□ Female

□ Decline to answer

Adapted from Tate CC, Ledbetter JN, Youssef CP. A two-question method for assessing gender categories in the social and medical sciences. J Sex Res 2013;50(8):767–776; with permission.