| |
1987
|
1987-1992a
|
1997
|
2002
|
2008
|
---|
Total
| |
151
|
241
|
220
|
195
|
197
|
|
Exposedd
|
112(83)
|
181(108)
|
165(90)
|
141(57)
|
146(52)
|
|
Unexposed
|
39
|
60
|
55
|
54
|
51
|
Returners from baseline (1987-1992)c
|
Exposedd
| | | |
8(1)
|
26(13)
|
|
Unexposed
| | | |
3
|
2
|
Lost to Follow up
|
Exposede
| |
9b(7)
|
16(12)
|
32(22)
|
21(4)
|
|
Unexposed
| |
3b
|
5
|
4
|
5
|
- a Baseline 1987-1992. Baseline consists of subjects entering the study in 1987 and 1992.
- b Lost to follow up between 1987 and 1992. The subjects are included in baseline (n = 241).
- c Subjects who were included at baseline, lost to follow up, but returned later to the study group in 2002 and/or 2008.
- d Subjects that currently are or previously have been exposed, the currently exposed in brackets.
- e Subjects that currently are or previously have been exposed, the currently exposed (based on the latest study) in brackets.