Table 3

Goodness-of-fit of the outcome binary response variable related to GSM exposure (log=ln)

SymptomROC curves areaClassification tablePseudo-R**2 (1)Cut-off (2) (log GSM)Cut-off (2) GSM (μW/m2)
SSVSPFAV
Headaches0.84***0.900.230.720.411.77
Sleep0.78***0.820.660.760.281.665.26
Attention0.78***0.670.720.690.283.6136.97
Irritability0.76***0.670.730.710.263.6136.97
Memory0.67**0.540.770.670.114.99146.94
Depression0.75***0.460.760.650.20184.93
Visual0.65*0.240.830.600.08368.71
Fatigue0.73***0.220.900.690.18685.4
Vertigo0.74***0.160.870.670.19685.4
Appetite0.87***0.400.940.850.431495.18
Nausea0.86***0.460.930.870.381495.18
Vascular0.85***0.201.00.900.343041.18
Skin0.67*0.001.000.810.0728604.15
  • Cut-off values of exposure to microwaves according to ROC analysis. The data are presented in the ascending order.

  • *p<0.05; **p<0.01; ***p<0.001 (1) Nagelkerke (2) cut-off (ROC curve): only values showing SSV and SPF above 0.5 are reported.

  • AV, average; GSM, Global System for Mobile Communication; ROC, receiver operating characteristic; SPF, specificity; SSV, sensitivity.