Table 1.

Demographic questions.

Demographic	Number of items	Description of measure and method of administration	Role in study	Development and modifications
Sexual identity	1	Response options include only lesbian, mostly lesbian, bisexual, mostly heterosexual, only heterosexual, pansexual, queer, asexual, or none of the above. Participants are asked to specify a different term if “none of the above” is chosen. [Interview]	IVa Covariate	Adapted from Skrocki [62]—revised to be inclusive of additional identities (eg, pansexual and asexual)
Sexual attraction	1	Response options include attracted to women, attracted to men, attracted to people with nonbinary identities, attracted to people of other genders, my attraction to people is not based on gender, not attracted to people of any gender, and not sure. Participants are asked to check all that apply and specify another term if “attracted to people with other genders” was selected. [Interview]	IV Covariate	Adapted from Skrocki [62]—revised to be inclusive of attractions other than to women or men
Sexual behavior	2	Past year sexual relationships with people other than the current partner (the partner who is also participating in the study). Response options include relationships with a woman or women, man or men, or nonbinary persons. [Interview]	IV Covariate	Adapted from Skrocki [62]—revised to be inclusive of relationships with nonbinary individuals
Sex or gender	1	We first ask about sex assigned at birth, then about current gender. Response options include female, male, transgender man or FTMb transgender, nonbinary or genderqueer, and another gender identity. Participants are asked to specify a term if another gender identity is chosen. [Interview]	IV Covariate	Follows recommendations presented by Suen et al [63]
Race or ethnicity	2	We first ask about ethnicity (ie, Hispanic, Latina, Latinx, and Latino) and the second about race (response options include African American or Black, Asian or Pacific Islander, American Indian or Alaska Native, White, biracial or multiracial, and another race or ethnicity). If none of these apply, participants are asked to specify their racial or ethnic identities. [Interview]	IV Covariate	On the basis of questions asked in the 2010 census
Relationship status	1	In a committed relationship not living together, committed relationship living together, not in a committed relationship, or other; participants are asked to specify if “other” is chosen. [Interview]	Covariate	Adapted from Hughes et al [64]
Marital status	1	For participants in a committed relationship, response options include legally married, in a domestic partnership or civil union, or not married or in a domestic partnership or civil union. [Interview]	Covariate	From previous CHLEWc waves
Education level	1	No formal schooling, eighth grade or less, some high school, high school diploma or GEDd, some college or 2-year degree, bachelor’s degree, graduate or professional school [Interview]	Covariate	Adapted from Hughes et al [64]
Annual household income	1	“Looking at hand card #18, which of these groups represents your total annual household income from all sources? Household means everyone living in your house that you consider part of your family. Don’t include a roommate or housemate.” Response options include under US $1000 to US $9999 to >US $200,000 [Interview]	Covariate	From previous CHLEW waves
Managing finances as a couple	2	Two questions about how finances are managed as a couple; the first asks about each partners’ contribution to the total household income, and the second asks who decides how household income is used [Interview]	Covariate Moderator	Developed for the CHLEW Couples Study
Health insurance	2	Two questions about health insurance status; the first asks whether the participant has health insurance; a follow-up question asks if this is their own or their partner’s plan [Interview]	Covariate	Developed for the CHLEW Couples Study
Geographic location	1	In open country but not on a farm, on a farm, in a small city or town, in a medium-size city, in a suburb near a large city, or a large city [Interview]	Covariate	From previous CHLEW waves
Employment status	1	Working full-time for pay, working part-time for pay, unemployed and looking for work, managing the household, not looking for work, retired or disabled, not looking for work, for other reasons [Interview]	Covariate	From previous CHLEW waves
Number of children in the household	2	How many children younger than 18 years live in the household; then how many children older than 18 years live in the household. [on the web]	Covariate	From previous CHLEW waves

^aIV: independent variable.

^bFTM: female-to-male.

^cCHLEW: Chicago Health and Life Experiences of Women.

^dGED: General Educational Development.