The HHS, implemented by the Office of Health Status Monitoring (OHSM), is an annual survey (started in 1968 and a telephone survey since 1996) modeled after the National Health Interview Survey. HHS collects demographic information for measuring population changes during intercensal years. Sample data are adjusted and weighted to generate estimates of the population in Hawaii. The survey provides demographic information for observing population changes during the intercensal decade. The survey provides information on health and demographic characteristics of the people of Hawaii (e.g., income, race, education, marital status, employment, household size, insurance status, health status, morbidity, food security, and physical and mental health). However, many of the items unrelated to health are added by private agencies. For this reason, the Hawaii DOH can only run customized data analysis on the core survey items related to health issues.