The mailed 2003 Diabetes Supplement was fielded to
2,381 individuals who had affirmed they had an unspecified kind of diabetes in the previous (2002) HRS round and
who were not participating in any other HRS mail surveys
that year. The mailed survey requested information on a
variety of domains, including medications, comorbidities,
and health care providers. Questionnaires were returned
by 1,901 participants (nearly 80% response rate), of which
1,516 had type 2 diabetes mellitus (385 respondents were
excluded because they reported having type 1 diabetes or
that they were uncertain).