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Table 1 Results from the case-control studies by Hardell.

From: Mobile phones and head tumours. The discrepancies in cause-effect relationships in the epidemiological studies - how do they arise?

tumours analogue digital cordless
brain malign (82/84): 2.4; 1.6-3.4 (19/18): 2.8; 1.4-5.7 (33/45): 1,8; 1,1-3.0
only astrocytomas I-IV (59/84): 2.7; 1.8-4.2 (15/18): 3.8; 1.8-8.1 (23/45): 2.2; 1.3-3.9
brain benign (57/84): 1.8; 1.2-2.6 (13/18): 1.6; 0.8-3.5 (28/45): 1.4; 0.8-2.3
only meningiomas (34/84): 1.6; 1.02-2.5 (8/18): 1.3; 0.5-3.2 (23/45): 1.6; 0.9-2.8
acoustic neuromas (19/84): 3.1; 1.7-5.7 (1/18): 0.6; 0.1-5.0 (4/45): 1.0; 0.3-2.9
Idem, but also as a function of head tumour laterality [3] (≥ 10-year latency)
tumours MP type all ipsilateral contralateral
astrocytomas analogue + digital (78/99): 2.7; 1.8-3.9 (50/45): 3.3; 2.0-5.4 (26/29): 2,8; 1,5-5.1
cordless (28/45): 2.5; 1.4-4.4 (19/15): 5.0; 2.3-11.0 (8/20): 1.4; 0.6-3.5
others malign analogue + digital (8/99): 3.2; 1.2-8.8 (4/45): 4.1; 1.03-16.0 (1/29): 1.7; 0.2-15.0
cordless (1/45): 1.1; 0.1-10.0 - not analysed (1/20): 3.9; 0.3-44.0
neuromas analogue + digital (20/99): 2.9; 1.6-5,5 (13/45): 3.0: 1.4-6.2 (6/29): 2.4; 0.9-6.3
cordless (4/45): 1.3; 0.4-3.8 (3/15): 2.3; 0.6-8.8 (1/20): 0.5; 0.1-4.0
meningiomas analogue + digital (38/99): 1.5; 0.98-2.4 (18/45): 1.6; 0.9-2.9 (12/29): 1.6; 0.7-3.3
cordless (23/45): 1.8; 1.01-3.2 (11/15): 3.0; 1.3-7.2 (7/20): 1.1; 0.5-2.9
Idem, only individuals who started using MPs < 20-year old (≥ 1-year latency) [3, 16]
tumours MP type all ipsilateral contralateral
astrocytomas analogue + digital (15/14): 5.2; 2.2-12.0 (8/5): 7.8; 2.2-28.0 (2/4): 2.2; 0.4-13.0
cordless (14/16): 4.4; 1.9-10.0 (9/6): 7.9; 2.5-25.0 (1/4): 1.1; 0.1-10.0
neuromas analogue + digital (5/14): 5.0; 1.5-16.0 (3/5): 6.8; 1.4-34.0 (1/4): 2.4; 0.2-24.0
cordless (1/16): 0.7; 0.1-5.9 (1/6): 1.7; 0.2-16.0 - not analysed
  1. Results of the pooled analyses by Hardell [13] on the risk of overall head tumours in exposed subjects compared to that of non-MP-users, as a function of the use of different MP types, (no. of cases and controls with ≥ 10-year use or latency): OR; 95%CI.
  2. 95% s.s. data