Table 2: Patient distribution correlated to age, sex, and start of follow-up.

Patients% of the total cohort

GenderWomen54657
Men41843

Age at the start of follow-up (years)<50808
50–6420021
65–7939741
80+28730

Calendar year at the start of follow-up1977–80748
1981–8555157
1986–9133735

Median/meanRange

Age of the patients at start of follow-up73/70.621–95

Number of years in follow-upPatients8.9/8.90–20.9
Controls7.4/8.30–20.9