Study type: Epidemiological study (observational study)

No association between the use of cellular or cordless telephones and salivary gland tumours. epidem.

Published in: Occup Environ Med 2004; 61 (8): 675-679

Aim of study (acc. to author)

The association between the use of cellular telephones or cordless telephones and the risk for salivary gland tumour was investigated in a case-control study in Sweden.

Further details

Subjects who started their use of a mobile phone or cordless phone within one year prior diagnosis were classified as unexposed.

Endpoint/type of risk estimation

Type of risk estimation: (odds ratio (OR))

Exposure

Assessment

Exposure groups

Group Description
Reference group 1 unexposed
Group 2 analog, 450 MHz, > 1 year latency
Group 3 analog, 450 MHz, > 5 year latency
Group 4 analog, 450 MHz, > 10 year latency
Group 5 analog, 900 MHz, > 1 year latency
Group 6 analog, 900 MHz, > 5 year latency
Group 7 analog, 900 MHz, > 10 year latency
Group 8 analog, all, > 1 year latency
Group 9 analog, all, > 5 year latency
Group 10 analog, all, > 10 year latency
Group 11 analog, ≤ 91 hours, > 1 year latency
Group 12 analog, ≤ 91 hours, > 5 year latency
Group 13 analog, ≤ 91 hours, > 10 year latency
Group 14 analog, > 91 hours, > 1 year latency
Group 15 analog, > 91 hours, > 5 year latency
Group 16 analog, > 91 hours, > 10 year latency
Group 17 digital, > 1 year latency
Group 18 digital, > 5 year latency
Group 19 digital, ≤ 64 hours, > 1 year latency
Group 20 digital, ≤ 64 hours, > 5 year latency
Group 21 digital, > 64 hours, > 1 year latency
Group 22 digital, > 64 hours, > 5 year latency
Group 23 cordless, > 1 year latency
Group 24 cordless, > 5 year latency
Group 25 cordless, ≤ 183 hours, > 1 year latency
Group 26 cordless, ≤ 183 hours, > 5 year latency
Group 27 cordless, > 183 hours, > 1 year latency
Group 28 cordless, > 183 hours, > 5 year latency
Group 29 all, > 1 year latency
Group 30 all, > 5 year latency
Group 31 all, > 10 year latency
Group 32 all, ≤ 182 hours, > 1 year latency
Group 33 all, ≤ 182 hours, > 5 year latency
Group 34 all, ≤ 182 hours, > 10 year latency
Group 35 all, > 182 hours, > 1 year latency
Group 36 all, > 182 hours, > 5 year latency
Group 37 all, > 182 hours, > 10 year latency

Population

Case group

Control group

Study size

Cases Controls
Eligible 415 -
Contacted 293 1,172
Participants 267 1,053
Participation rate 91 % 90 %
Statistical analysis method: (adjustment: )

Conclusion (acc. to author)

No association between use of cellular telephones or cordless telephones and the risk of salivary gland tumours was found.

Study funded by

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