Table 1

 Distribution of relatives according to their relationship with the proband

Relationship with probandNo of womenAge (y)*No of menAge (y)*Person years (from 1 January 1970)
*Values are mean (SD).
Child106038.9 (12.8)106837.0 (14.2)45 701
Sibling126657.5 (22.3)128353.7 (22.1)44 499
Parent74873.2 (16.2)73566.2 (15.6)9137
Aunt/uncle141368.1 (23.2)134258.6 (23.4)17 390
Grandparent80273.9 (15.4)79567.4 (15.3)680
Total number52895223117 407