Table 3

 Variance and contrast in inhalable dust and dermal CSM exposure in various exposure groupings of rubber workers (n = 590; k =  220)

Grouping variableNo. of groupsInhalable dustDermal CSM
bgSy2*bwSy2wwSy2ε§bgSy2bwSy2wwSy2ε
*Between-group variance.
†Between-worker variance or within-group variance.
‡Within-worker variance.
§Contrast between groups: estimated (between-group variance/sum of between- and within-group variance).
¶Number of groups for inhalable and dermal exposure, respectively.
Worker onlyNA0.590.38NA0.660.83
Department70.010.570.380.020.040.620.830.06
Plant90.030.560.380.050.020.650.840.03
Type30.000.580.380.000.000.660.830.00
Determinant based30.160.420.380.280.230.440.840.34
Plant/department560.100.490.380.160.160.500.840.25
Plant/determinant based25/26¶0.290.300.380.490.210.450.840.32
Department/determinant based21/200.240.350.380.400.190.480.840.28