Table 2.

Reliability and convergent validity of the PtGA item

Test-retest reliability	ICC (95%CI)
Overall	0.84 (0.80, 0.87)
Country
Denmark	0.88 (0.83, 0.91)
US	0.81 (0.79, 0.87)
Sex
Female	0.84 (0.79, 0.87)
Male	0.84 (0.73, 0.92)
Age Group
≤20	1.00 (1.00, 1.00)
21-30	0.81 (0.71, 0.88)
31-40	0.87 (0.80, 0.92)
41-50	0.85 (0.77, 0.90)
51-60	0.82 (0.70, 0.89)
61-70	0.84 (0.64 0.94)
71-80	0.93 (0.68, 0.99)
Race
White	0.82 (0.76, 0.87)
Asian	NC
Black	0.77 (0.61, 0.88)
North American	NC
Indian	NC
Hispanic/Latino	NC
Mixed	NC
Other
Convergent validity	Spearman correlation (95%CI)
	Overall	US	DK
DLQI	0.78 (0.74, 0.82)	0.72 (0.64,0.77)	0.85 (0.81,0.89)
HiSQOL	0.82 (0.78,0.85)	0.76 (0.69,0.81)	0.88 (0.84,0.90)
HADS
Anxiety	0.55 (0.48, 0.61)	0.52 (0.41,0.68)	0.58 (0.48,0.66)
Depression	0.53 (0.48, 0.59)	0.57 (0.48,0.66)	0.48 (0.37,0.58)
NRS for pain	0.66 (0.60, 0.71)	0.60 (0.51,0.68)	0.72 (0.65,0.78)