TABLE 4.

Linear regression analysis between PHQ-9 score and MFCC7-negative.

	β	SE	t	p	95% confidence interval of β
					Lower bound	Upper bound
PHQ-9 score
(constant)	17.00	1.79	9.49	< 0.001	13.34	20.65
MFCC7-negative	0.90	0.33	2.69	0.01	0.22	1.58
HAMD anxiety/somatization score
(Constant)	4.33	1.11	3.92	< 0.001	2.09	6.58
MFCC9-neutral	–0.45	0.22	–2.04	0.049	–0.91	–0.001