Table 3.

Multiple linear regression analysis.

Unadjusted for predictors							Adjusted for predictors
Covariate	R-value	Adjusted R-square value	Un-standardized beta coefficient	F	t-value	p-value	Standardized coefficients beta	t-value	p-value
Sleep efficiency	0.061	0.003	− 0.001	5.895	− 2.428	0.015*	− 0.123	− 1.125	0.261
BMI	0.043	0.001	− 0.003	2.857	− 1.690	0.091	0.041	1.044	0.297
ADBP	0.095	0.008	− 0.003	14.230	− 3.772	0.000*	− 0.307	− 4.916	0.000*
ASBP	0.029	0.000	0.000	1.323	− 1.150	0.250	0.224	3.543	0.000*
Sleep N3	0.039	0.001	− 0.002	2.364	− 1.537	0.124	0.007	0.209	0.834
Alcohol use	0.004	− 0.001	− 0.001	.028	− 0.169	0.866	− 0.005	− 0.194	0.846
Cigarette packs per year	0.031	0.000	0.001	1.500	1.225	0.221	0.025	0.965	0.335
Sleep time	0.055	0.002	0.000	4.822	− 2.196	0.028*	0.091	0.870	0.384
Age	0.097	0.009	0.008	14.915	3.862	0.000*	0.043	1.527	0.127
Gender	0.016	0.000	− 0.023	0.380	− 0.616	0.538

Association of the number of angina episodes with sleep efficiency, BMI, average diastolic blood pressure, average systolic blood pressure, percent time in stage N3 of sleep, alcohol use, cigarette use, sleep time, age, and gender.

BMI: body mass index; ADBP: average diastolic blood pressure; ASBP: average systolic blood pressure; Sleep N3: percent time in stage N3 of sleep.

*Significant.