Hardell, Lennart; Carlberg, Michael; Söderqvist, Fredrik; Mild, Kjell Hansson; Morgan, L. Lloyd

Table 3

Summary of nine studies on other brain tumour types or not specified and use of wireless telephones

Study	Period covered	Study type	Age (years)	Tumour type	No. of cases	OR* (95% CI)	Comments
SIR, standardised incidence ratio.
*Unless otherwise stated.
Hardell et al 1999, 2001 Sweden^1,²	1994–1996	Case–control	20–80	Brain tumours	78	1.0 (0.7 to 1.4)	Analogue and digital cell phone use
					34	1.1 (0.6 to 1.8)	Ipsilateral use
					16	1.2 (0.6 to 2.6)	>10-year latency, analogue cell phone
Muscat et al 2000 USA³	1994–1998	Case–control	18–80	Brain tumours	66	0.9 (0.6 to 1.2)	Regular use
Muscat et al 2000 USA³	1994–1998	Case–control	18–80	Neuro-epithelioma	35	2.1 (0.9 to 4.7)	Mean duration of use 2.8 years
Johansen et al 2001 Denmark⁴	1982–1995	Cohort	>18	Brain tumours	20	SIR = 1.3 (0.8 to 2.1)	Analogue and digital cell phone use
Johansen et al 2001 Denmark⁴	1982–1995	Cohort	>18	Brain tumours	9	SIR = 1.2 (0.6 to 2.3)	⩾3-year duration of digital subscription
Inskip et al 2001, USA⁵	1994–1998	Case–control	⩾18	Meningioma	6	0.9 (0.3 to 2.7)	⩾5 years of cell phone use
Lönn et al 2005 Sweden Interphone¹⁰	2000–2002	Case–control	20–69	Meningioma	118	0.7 (0.5 to 0.9)	Regular use
					5	1.3 (0.5 to 3.9)	⩾10 years since first “regular” cell phone use on same side of head as tumour
					3	0.5 (0.1 to 1.7)	⩾10 years since first “regular” cell phone use on opposite side of head as tumour.
Christensen et al 2005 Denmark, Interphone¹²	2000–2002	Case–control	20–69	Meningioma	67	0.8 (0.5 to 1.3)	Regular use
Christensen et al 2005 Denmark, Interphone¹²	2000–2002	Case–control	20–69	Meningioma	6	1.0 (0.3 to 3.2)	⩾10 years since first regular use of cell phone
Schüz et al 2006 Germany, Interphone¹⁴	2000–2003	Case–control	30– (59) –69 (see above)	Meningioma	104	0.8 (0.6 to 1.1)	Regular use
Schüz et al 2006 Germany, Interphone¹⁴	2000–2003	Case–control	30– (59) –69 (see above)	Meningioma	5	1.1 (0.4 to 3.4)	⩾10 years since first “regular use” of cell phone
Hardell et al 2006a, Sweden¹⁵	1997–2003	Case–control	20–80	Meningioma	347	1.1 (0.9 to 1.3)	>1-year latency of cell phone use
					38	1.5 (0.98 to 2.4)	>10 -year latency of cell phone use
					15	2.0 (0.98 to 3.9)	>10 -year latency of ipsilateral cell phone use
					23	1.6 (0.9 to 2.8)	>10 -year latency of cordless phone use
					9	3.2 (1.2 to 8.4)	>10 -year latency of ipsilateral cordless phone use
Schüz et al 2006, Denmark¹⁷	1982–2002	Cohort	⩾18	Brain and nervous system	28	SIR = 0.7 (0.4 to 0.95)	⩾10 -year latency

Long-term use of cellular phones and brain tumours: increased risk associated with use for ⩾10 years

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