Table 2.

Demographic and characteristics of respondents, overall and by sleep quality status.

Characteristic	No. (%)
		Poor Sleep Quality*
	Total	Yes	No
Overall	502 (100)	346 (68.9)	156 (31.1)
Sex
Men	150 (30.6)	97 (46.1)	53 (54.3)
Women	341 (69.5)	241 (53.9)	100 (45.7)
Age, y
18–30	244 (48.6)	171 (70.1)	73 (29.9)
31–40	121 (24.1)	80 (66.1)	41 (33.9)
41–50	69 (13.8)	52 (75.4)	17 (24.6)
51–60	44 (8.8)	28 (63.6)	16 (36.40
>60	24 (4.8)	15 (62.5)	9 (37.5)
Education level
< High school	1 (0.2)	0 (0)	1 (100)
High school	131 (26.2)	96 (73.3)	35 (26.7)
Some college	101 (20.2)	71 (70.3)	30 (29.7)
Bachelor's	184 (36.7)	119 (64.7)	65 (35.3)
Graduate	84 (16.8)	59 (70.2)	25 (29.8)
Employment status
Full time	201 (46.6)	141 (70.2)	60 (29.9)
Part time	102 (23.7)	70 (68.6)	32 (31.4)
Not employed	128 (29.7)	87 (68.0)	41 (32.0)
Income
<£10,000	57 (11.4)	41 (71.9)	16 (28.1)
£10,000–£30,000	171 (34.1)	119 (69.6)	52 (30.4)
£30,001–£50,000	147 (29.3)	105 (71.4)	42 (28.6)
£50,001–£80,000	80 (15.9)	50 (62.5)	30 (37.5)
£80,001–£100,000	20 (4.0)	12 (60.0)	8 (40.0)
£>100,000	27 (5.4)	19 (70.4)	8 (29.6)
Political leaning
Conservative	81 (16.1)	55 (67.9)	26 (32.1)
Liberal	261 (52.0)	183 (70.1)	78 (29.9)
Ambivalent	160 (31.9)	108 (67.5)	52 (32.5)

^*Defined as PSQI>5.