Age (years)

60.0 ± 10.2

Male

261 (53.5)

Houshold income*

Low income

390 (79.9)

Average income or higher

98 (21.1)

Level of education

Less than high school

243 (49.8)

High school

167 (34.2)

Associate degree and higher

78 (16)

Employed

115 (23.6)

Having medical insurance

382 (78.3)

Weight (kilogram)

82.1 ± 13.5

Body mass index ≥ 30 kg/m2

210 (43.0)

Medical treatment of diabetes mellitus

Oral hypoglycemic

318 (65.2)

Insullin injection

94 (19.3)

Oral hypoglycemic and insullin injection

76 (15.6)

Duration of diabetes mellitus

10.4 ± 7.1