TableĀ 1
Per cent misclassified as exposed using duration of employment as opposed to duration of exposure
Per cent misclassified (%)
Exposed job titles (%)
Decade
San Francisco
Chicago
Philadelphia
All departments
1950
7
6
6
99
1960
8
14
10
97
1970
13
25
12
92
1980
16
37
15
83
1990
25
36
20
79
2000
32
33
22
81
Total
20
30
16
85