Table 2:
Treatment characteristics I.
Avg. – average, mean
SD – standard deviation
SEM - standard deviation of the mean
Exp. - exposure.
Range
Avg
SD
SEM
Age 1
st
exp., months
1-84
20.1
17.1
3.1
Age 50
th
exp., months
5-123
44.3
23.1
4.1
Duration between 1
st
and 50th exp., months
4-57
24.2
12.8
2.2
No. of exp. Episodes
4-10
6.5
1.4
0.2