Health and Relationships Project, United States, 2014-2025

The Health and Relationship Project is a study of both spouses in same-sex and different-sex marriages who were legally married and aged 35 to 65 at the time of data collection (2015). There are two parts of this study: a baseline questionnaire and a daily diary questionnaire completed for 10 consecutive days; both components were completed online and spouses were asked to complete the surveys separately. The baseline questionnaire asks participants about a number of topics related to marriage and health, including stress, health status and health behaviors, relationship quality, and how they have approached health problems in the past. The diary questionnaire asks participants a number of questions about the past 24 hours, including daily stress experiences, social interactions, and health behaviors.