Quality of sleep and its determinants among people with type 2 diabetes mellitus in Northwest of Iran

Table 1 Demographic characteristics of the patients with type-2 diabetes in diabetes clinic of Ardabil (n = 256) in 2014

Characteristics	n (%)
Age group (yr)
< 50	68 (26.6)
50-59	113 (44.1)
> 60	75 (29.3)
Sex
Male	75 (29.3)
Female	181 (70.7)
Education
Illiterate	127 (49.6)
Primary school	70 (27.3)
Secondary school and higher	59 (23)
Income
Low ( < 500)	151 (71.6)
Acceptable	60 (28.4)
Marital status
Married	227 (88.7)
Single/divorced/widow	29 (11.3)
Occupation
In-paid work	41 (16)
Not working	215 (84)
Smoking
Yes	232 (92.4)
No	19 (7.6)
Body mass index
< 25	49 (19.1)
25-29.9	101 (39.5)
≥ 30	106 (41.4)