Males | Females | ||||
Subjectsn | Ageyrs | Subjectsn | Ageyrs | ||
Idiopathic | 66 | 47±12 | 109 | 49±11 | |
Connective | 19 | 51±10 | 92 | 52±11 | |
Congenital | 28 | 44±17 | 60 | 44±15 | |
Total | 113 | 50±13 | 261 | 52±12 |
Data are presented as mean±sd, unless otherwise stated. SMR: Scottish Morbidity Record. #: Scottish males and females aged 16–65 yrs who were discharged from a Scottish hospital for the first time during the period 1986–2001.