. 2020 Feb 5;43(7):zsaa016. doi: 10.1093/sleep/zsaa016

Table 1.

Multivariable Regression Results Predicting CAP Rate, A1 Index, and A2+A3 Index in MrOS and SOF

	MrOS
	CAP rate, %				A1 index, no./h				A2+A3 index, no./h
Variables	B	SE	t	p	B	SE	t	p	B	SE	t	p
Age, years	0.13	0.05	2.48	0.013*	−0.05	0.05	−0.92	0.36	0.18	0.08	2.36	0.019
AI-NREM, no./h	0.36	0.03	14.05	<0.001*	−0.23	0.03	−8.81	<0.001*	0.70	0.04	18.77	<0.001*
OAHI, no./h	0.02	0.02	0.69	0.49	−0.02	0.03	−0.81	0.42	−0.07	0.04	−1.86	0.063
PLMSI, no./h	0.01	0.01	1.47	0.14	−0.03	0.01	−3.90	<0.001*	0.07	0.01	6.01	<0.001*
Constant	37.02	3.90	9.49	<0.001*	29.79	4.03	7.39	<0.001*	17.57	5.70	3.08	<0.01*
R ²	0.10				0.05				0.16
Adj. R²	0.10				0.05				0.16
	F(4,2806) = 75.60		p < 0.001		F(4,2806) = 36.17		p < 0.001		F(4,2806) = 131.90		p < 0.001
	SOF
	CAP rate, %				A1 index, no./h				A2+A3 index, no./h
Variables	B	SE	t	p	B	SE	t	p	B	SE	t	p
Age, years	−0.52	0.26	−1.96	0.051	0.12	0.25	0.49	0.62	−0.77	0.35	−2.21	0.028
AI-NREM, no./h	0.40	0.07	5.88	<0.001*	−0.20	0.06	−3.06	<0.01*	0.72	0.09	7.91	<0.001*
OAHI, no./h	0.07	0.08	0.95	0.34	−0.04	0.07	−0.60	0.62	0.06	0.10	0.59	0.56
PLMSI, no./h	0.031	0.02	1.19	0.23	−0.02	0.02	−0.81	0.42	0.07	0.03	2.46	0.014*
Constant	85.35	21.62	3.95	<0.001*	12.74	20.56	0.62	0.54	94.33	28.73	3.28	<0.01*
R ²	0.11				0.03				0.18
Adj. R²	0.10				0.02				0.17
	F(4,421) = 12.98		p < 0.001		F(4,421) = 3.62		p < 0.01		F(4,421) = 23.33		p < 0.001

Results of each multivariable regression predicting CAP rate, A1 index, and A2+A3 index in Osteoporotic Fractures in Men (MrOS) Study and women in Study of Osteoporotic Fractures (SOF) with age as independent variable and the obstructive apnea–hypopnea index (OAHI) at 4% oxygen desaturation, the arousal index (AI-NREM) in NREM sleep, and the periodic limb movement in sleep index (PLMSI) as additional independent variables. B, an estimate of beta coefficient; SE, standard error of beta coefficient. *Significance level: p < 0.017 (adjusted to the number of variables under consideration).