Table 3.

Multiple regression analysis

	BESAQ		EF		OF		SD		IS		OS		IIEF – total score
	t	P value	t	P value	t	P value	t	P value	t	P value	t	P value	t	P value
Age			−2.96	.01
NYHA class			−2.64	.0001	−2.11	.03							−4.11	.001
VAS score
Presence of OSA	2.65	.01
BMI
How do you rate your weigh—normal					2.22	.03
BESAQ
Education—secondary	2.60	.01
Employment—unemployed					−4.11	.001
Employment—blue collar worker					4.39	.001
Duration of relationship (years)							−2.71	.01
Quality of relationship∗—poor			−2.13	.03					−2.21	.03	−2.63	.01	−2.2	.03
Quality of relationship∗—good			2.65	.01					2.98	.001			2.57	.01
Importance of sex∗—low					−3.34	.01			−2.73	.01
Importance of sex∗—medium							−2.01	.04
Importance of sex∗—high					2.11	.04

Only significant variables are presented and bolded.

Statistics for the models: for EF, adjusted R² for the model = .31, F(5,89) = 5.89, P = .0001; for IS, adjusted R² = .34, F(8,84) = 5.53, P = .00001; for OF, adjusted R² = .45, F(10,78) = 6.51, P = .0001; for SD, adjusted R² = .31, F(4,44) = 4.78, P = .003; for OS, adjusted R² = .24; F(4,82) = 6.58, P = .0001; for total IIEF score, adjusted R² = .30, F(1,34) = 6.25, P = .001; for BESAQ, adjusted R² = .14; F(3,81) = 4.46, P = .01.

BESAQ = Body Exposure in Sexual Activities Questionnaire; CSFQ = Changes in Sexual Functioning Questionnaire; EF = erectile function; HADS = Hospital Anxiety and Depression Scale; IIEF-15 = International Index of Erectile Function; IS = intercourse satisfaction; NYHA = New York Heart Association; OF = orgasmic function; OS = overall satisfaction; OSA = obstructive sleep apnea; SD = sexual desire; VAS = Visual Analogue Scale.

^∗5-point Likert scale.