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

Table 3

Comparisons of patient-reported outcomes by pigmentary changes and hyperkeratosis.

	Pigmentary changes			Hyperkeratosis			Hair arsenic concentration
PROs	Presence	Absence		Presence	Absence		≥1 μg/g	<1 μg/g
Itch NRS			0.947			0.208			0.012
PSQI			0.223			0.555			0.910
GAD-2			0.899			0.129			0.315
PHQ-2			0.887			0.010			0.522
DLQI			0.181			0.211			0.003

PROs: patient-reported outcomes; 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.