Table 4.

Adjusted ORs (95% CIs)a for glioma and meningioma in relation to categorical and continuous indicators of cumulative occupational ELF exposure in the 1- to 4- and 10+-year time window before the date of diagnosis/reference date, including only participants who were very cooperative, responsive, and interested as determined by the interviewer, INTEROCC study, 2000 to 2004, Australia, Canada, France, Germany, Israel, New Zealand, and the United Kingdom

GliomaMeningioma
Cumulative exposure (μT-years)CasesControlsOR (95% CI)aCasesControlsOR (95% CI)a
1–4 years
 <0.342188261.00 (ref.)2017581.00 (ref.)
 0.34–<0.462187291.21 (0.97–1.51)2016771.07 (0.85–1.35)
 0.46–<0.583018251.54 (1.24–1.90)2487781.24 (0.98–1.55)
 0.58–<0.801864501.52 (1.20–1.94)1334001.39 (1.06–1.82)
 0.80+1493041.76 (1.35–2.28)902821.30 (0.96–1.77)
PTrend-value<0.00010.03
10+ years
 <1.382919301.00 (ref.)
 1.38–<2.482879101.06 (0.85–1.32)
 2.48–<3.982719160.99 (0.78–1.25)
 3.98–<6.232145391.14 (0.87–1.50)
 6.23+1093350.88 (0.64–1.21)
PTrend-value0.44
  • aOR estimated for each exposure time window separately using conditional logistic regression models stratified by country, region, sex, and 5-year age group at the reference date and adjusted for level of educational attainment. Cutoff points from Table 3 used here. Tests for linear trend used Wald χ2 tests, with categorical medians modeled as ordinal variables.