Collecting a set of psoriasis family material through a patient organisation; clinical characterisation and presence of additional disorders

Table 1 Examined persons in all 310 families

Size of sibship	Families *	Proband generation		Parent generation
	N	N with pso	N total	N with pso	N total
1	78	73	78	6	36
2	99	154	198	11	154
3	70	140	210	8	127
4	32	77	128	3	54
5	17	49	85	0	28
6	6	19	36	1	9
7	4	13	28	2	7
8	1	3	8	0	2
9	1	4	9	0	0
10	2	7	20	0	0
Total	310	539	800	31	417

*All families are not complete. This is most obvious in the small families, where only half of the individuals were examined. These families were not ideal for our genetic study, but still represent the study population in this clinic examination study.

ISSN: 1471-5945