Correlation of lower 2 h C-peptide and elevated evening cortisol with high levels of depression in type 2 diabetes mellitus

Table 2 Multiple stepwise regression models for all patients with T2DM

Dependent variable: PHQ-9 total scores					Dependent variable: CES-D total scores
Independent variables	B	Beta	t	R Square	B	Beta	t	R Square
Independent variables	(Std. Error)			Change	(Std. Error)			Change
Plasma cortisol (12:00 pm)	0.19(0.07)	0.38	2.71**	0.21	0.62(0.20)	0.43	3.19**	0.10
Fasting ghrelin	−1.54(0.51)	−0.31	−2.99**	0.11
2hCP	−2.55(0.93)	−0.30	−2.74**	0.09	−4.79(1.43)	−0.50	−3.35**	0.19
Gender					4.78(1.63)	0.45	2.93**	0.15

T2DM Type 2 diabetes mellitus, PHQ-9 Patient Health Questionnaire-9, CES-D Center for Epidemiological Studies Depression scale, Std Error Standard error, 2hCP 2 h postprandial C-peptide
**There was a significant correlation (p < 0.01). Gender (1-male, 2-female)

ISSN: 1471-244X