Table 7.

Known-groups validity: 3L and 5L with socio-demographic variables^a

Demographic variable	Age-groups (Spearman’s rho)		Education (Spearman’s rho)		Smokingb (p value)
	3L	5L	3L	5L	3L	5L
Mobility	0.44**	0.45**	−0.16**	−0.20**	<.001	<.001
Self-Care	0.32**	0.33**	−0.13**	−0.13**	<.001	<.001
Usual Activities	0.28**	0.27**	−0.15**	−0.17**	<.001	<.001
Pain/Discomfort	0.23**	0.24**	−0.15**	−0.14**	0.068	<.001
Anxiety/Depression	−0.04*	−0.06**	−0.04	−0.04	<.001	<.001

* p < 0.05; ** p < 0.001

^a Education was included only in Denmark, England, and Scotland (n = 1,869); smoking status was included in England and Scotland (n = 1,501)

^bKruskall–Wallis H