Epidemiological principles for EMF and EMR studies - Lincoln ...

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Table 3: A sample of 2x2 statistical results of Relative Risk, as for Table 2, with the
Healthy Worker Effect Adjustment, expressed as a % reduction adjustment
to the control group population.
HWE(%) Np Ne Nc RR 95%CI p-value
0 500 12 6 2.00 0.76 - 5.29 0.154
33 500 12 4 3.00 0.97 - 9.24 0.044
50 500 12 3 4.00 1.14 - 14.09 0.019
0 1000 24 12 2.00 1.01 - 3.98 0.044
33 1000 24 8 3.00 1.35 - 6.65 0.0094
50 1000 24 6 4.00 1.64 - 9.74 0.00093
0 2000 48 24 2.00 1.23 - 3.24 0.004
33 2000 48 16 3.00 1.71 - 5.26 0.000055
50 2000 48 12 4.00 3.13 - 7.51 0.0000028
0 3000 72 36 2.00 1.34 - 2.97 0.0005
33 3000 72 24 3.00 1.90 - 4.75 0.0000008
50 3000 72 18 4.00 2.39 - 6.69