Review Article

Evaluation of Mobile Phone and Cordless Phone Use and Glioma Risk Using the Bradford Hill Viewpoints from 1965 on Association or Causation

Table 12

Coherence. Hazard ratio (HR) and 95% confidence interval (CI) for survival of patients with glioma and use of wireless phones, study period 1997–2009 [55].

Latency > 20 yearsGliomaGlioblastoma multiforme
HR95% CIHR95% CI

Wireless phone1.681.23–2.292.091.45–3.01
Mobile phone1.791.30–2.471.991.37–2.91
Cordless phone1.350.49–3.723.371.04–10.92