Table 3.

Multivariate linear regression analysis of oxytocin levels

	Unadjusted			Model 1			Model 2
	Β (95% CI)	p	R2	Β (95% CI)	p	R2	Β (95% CI)	p	R2
SAD
LSAS total			0.205			0.272			0.157
Oxytocin	0.112 (0.012–0.211)	0.03		0.146 (-0.015–0.486)	0.013		0.145 (-0.0005–0.291)	0.051
Age				-0.695 (-1.770–0.380)	0.193		-0.691 (-1.946–0.564)	0.263
Years of education							0.044 (-7.298–7.385)	0.99
LSAS fear			0.128			0.234			0.134
Oxytocin	0.045 (-0.008–0.099)	0.094		0.067 (0.009–0.126)	0.026		0.083 (0.007–0.159)	0.034
Age				-0.451 (-1.017–0.115)	0.112		-0.551 (-1.204–0.101)	0.093
Years of education							-1.244 (-5.063–2.576)	0.504
LSAS avoidance			0.251			0.279			0.186
Oxytocin	0.066 (0.014–0.118)	0.015		0.078 (0.019–0.138)	0.013		0.063 (-0.014–0.140)	0.105
Age				-0.244 (-0.819–0.331)	0.388		-0.140 (-0.803–0.523)	0.664
Years of education							1.287 (-2.590–5.165)	0.496
Control
LSAS total			0.006			0.007			0.005
Oxytocin	0.015 (-0.065–0.094)	0.707		0.016 (-0.066–0.098)	0.697		0.014 (-0.072–0.100)	0.736
Age				-0.220 (-2.814–2.374)	0.863		-0.185 (-3.844–3.475)	0.918
Years of education							0.061 (-12.586–12.708)	0.992
LSAS fear			0.004			0.007			0.005
Oxytocin	0.009 (-0.043–0.060)	0.735		0.009 (-0.044–0.062)	0.718		0.008 (-0.047–0.063)	0.764
Age				-0.192 (-1.872–1.487)	0.815		-0.216 (-2.577–2.145)	0.851
Years of education							0.338 (-7.820–8.497)	0.932
LSAS avoidance			0.004			0.004			0.004
Oxytocin	0.006 (-0.032–0.044)	0.741		0.006 (-0.033–0.045)	0.744		0.006 (-0.035–0.047)	0.763
Age				-0.028 (-1.261–1.206)	0.963		0.031 (-1.715–1.778)	0.971
Years of education							-0.277 (-6.311–5.757)	0.925

Β (95% CI): coefficient and 95% confidence interval, Model 1: adjusted for age, Model 2: adjusted for age and years of education. LSAS: Liebowitz Social Anxiety Scale