Table 2.

Linear regression models for natural logarithmic transformations (ln 1 + costs) of absenteeism and presenteeism costs due to psoriasis

	Absenteeism			Presenteeism
	Beta	t-stat	p=	Beta	t-stat	p=
Male sex	-0,609	-2,359	0,040	0,398	1,402	0,180
Income level	-0,322	1,243	0,242	-0,410	-1,553	0,140
Disease duration	0,199	0,859	0,569	0,375	1,687	0,111
Concomitant diseases	0,393	1,095	0,299	0,446	2,208	0,042
	R2 = 0,4			R2 = 0,38