Table 1.
Case-control studies on the risk of central nervous (CNS) tumors due to mobile phones.
| Sample | Relative risk (RR) for tumor (Confidence Interval [CI] – 95%) | Conclusion | |
|---|---|---|---|
| Muscat et al. (2000)17 | 469 cases 422 controls | RR 0.7 (CI – 95% = 0.3–1.4) | No increased risk |
| Inskip et al. (2001)18 | 782 cases: 96 acoustic neuromas, 799 controls | RR 0.9 (CI 95%= 0.7–1.1) for all tumors | No increased risk |
| RR 0.8 (CI 95%= 0.5–1.4) for acoustic neuromas | |||
| Muscat et al. (2002)19 | 90 acoustic neuromas 86 controls | RR 0.9 (CI 95%= 0.3–1.4) | No increased risk |
| Hardell et al. (2003)20 | 1429 cases
1470 controls |
RR 1.3 (CI 95%= 1.04–1.6) for analog handsets
RR 1.4 (CI 95%=0.9–2.1) for digital handsets - use>5 years |
Increased risk when using analog handsets, and when using digital handsets for over 5 years |
| Christensen et al. (2004)21 | 106 acoustic neuromas 212 controls | RR 0.9 (CI 95%= 0.51–1.57) | No increased risk |
| Lönn et al. (2004)7 | 148 acoustic neuromas 604 controls | RR 1.9 (CI 95%= 0.8–4.3) for analog handsets | Increased risk when using analog handsets for 10 years or more |
| Hardell et al. (2005)23 | 413 cases: 84 acoustic neuromas,
692 controls |
RR 4.2 (CI 95%= 1.8–10) for analog handsets
RR 8.4 (CI 95% 1.6–45) for handset use >15 years |
Increased risk when using analog handsets |