Table 4.

Descriptive statistics and correlation coefficients between variables

Item	$\overline{\mathcal{X}}$ ± s	DDPRQ-10	DDPRQ-PF	DDPRQ-NF	PHQ-9
DDPRQ-10	8.64 ± 10.0	-
DDPRQ-PF	2.81 ± 3.53	0.856***	-
DDPRQ-NF	5.83 ± 7.21	0.967***	0.698***	-
PHQ-9	5.06 ± 0.52	0.329**	0.333**	-0.293**	-

DDPRQ-10 Difficult Doctor-Patient Relationship Questionnaire Chinese Version, DDPRQ-NF Negative feelings subscale of DDPRQ-10 Chinese version, DDPRQ-PF Positive feelings subscale of DDPRQ-10 Chinese version, PHQ-9 Patient Health Questionnaire Depression Scale-9 item, PHQ-9; ^**P < 0.01; ^**P < 0.001