Table 3.

Bivariate analyses between participants’ characteristics, sleep quality and Framingham 10-year risk score (n = 154)

Participants’ characteristics	Statistical values	p-value
Categorical variablesa	t/F
Marital status	t = 0.076	0.783
Educational level	F = 0.242	0.786
Employment status	t = 6.414	0.012
Physical exercise habit	t = 0.127	0.722
Current drinker	t = 1.561	0.722
Continuous variablesb	r
Subjective sleep quality	0.138	0.087
Sleep latency	0.103	0.203
Sleep duration	0.106	0.191
Habitual sleep efficiency	0.077	0.343
Sleep disturbance	0.264	0.001
Sleep medication	0.006	0.936
Daytime dysfunction	0.021	0.800
Global PSQI score	0.124	0.126

^aExamined by independent t-test or one way analysis of variance

^bExamined by Person correlation analyses. PSQI: Pittsburgh sleep quality index