Association of Sleep Quality and Waking Time with Prediabetes: The Qazvin Metabolic Diseases Study, Iran

Table 2

Relationship between sleep patterns and prediabetes.

Variable	Total	Normal	Prediabetes		df	value
Sleep quality
Good	52 (5.4)	44 (84.6)	8 (15.4)	3.757	1	0.053
Poor	904 (94.6)	654 (72.3)	250 (27.7)
Bedtime
At or before 12.00 am	788 (83.9)	580 (73.6)	208 (26.4)	0.280	1	0.597
After 12.00 am	151 (16.1)	108 (71.5)	43 (28.5)
Waking time
Before 6.00 am	113 (12.2)	78 (69.0)	35 (31.0)	12.161	2	0.002
Between 6 and 7 am	427 (46.2)	297 (69.6)	130 (30.4)
After 7 am	384 (41.6)	306 (79.7)	78 (20.3)
Sleep duration
<6 hours	33 (3.5)	23 (69.7)	10 (30.3)	3.238	2	0.198
6–8 hours	668 (70.7)	478 (71.6)	190 (28.4)
>8 hours	243 (25.8)	188 (77.4)	55 (22.6)

Data are presented as number (percent).