Table 1.

Characteristics of 508 consecutive patients seen in a general internal medicine clinic at Mayo Clinic in Rochester, Minnesota

Characteristic	No. (%) a
Age, mean ± SD, y	62.9 ± 14.9
Sex
Female	257 (51)
Male	251 (49)
Home
Minnesota	176 (35)
US, not Minnesota	296 (58)
International	35 (7)
Education level
<High school graduate	31 (6)
High school graduate	100 (21)
Some college	125 (26)
College graduate	102 (21)
Postgraduate	122 (25)
Smoking status
Never	244 (48)
Former	217 (43)
Current	44 (9)

^aValues are number (percentage) of patients unless indicated otherwise.