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

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

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

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

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

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

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

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