TABLE 1

Composition (n) and demographic characteristics of diagnosis onset cohort: the Pittsburgh EDC study

1950–1959 cohort1960–1964 cohort1965–1969 cohort1970–1974 cohort1975–1980 cohortTotal
n235153172167179906
Predeceased (n)9335141143
Exam (n)122102136143149652
Survey only (n)2016222330111
Age at onset (mean ± SD)*7.8 ± 3.98.1 ± 3.88.1 ± 4.38.6 ± 3.99.1 ± 3.88.3 ± 3.9
Sex (% male)545449514450.4
  • *

    * P < 0.01, significant trend.