Patient-Reported Outcomes of Arsenic-Related Skin Lesions in China

Table 2

Spearman correlation between the patient-reported measures.

	Itching NRS	PSQI	GAD-2	PHQ-2
PSQI	0.18	1
GAD-2	0.11	0.28	1
PHQ-2	0.13	0.31	0.74	1
DLQI	0.71	0.18	0.17	0.18

NRS: numeric rating scale; PSQI: Pittsburgh Sleep Quality Index; GAD-2: two-item Anxiety Disorder Scale; PHQ-2: two-item Patient Health Questionnaire; DLQI: Dermatology Life Quality Index. and .