PT Journal AU Larsen, AI TI Congenital malformations and exposure to high-frequency electromagnetic radiation among Danish physiotherapists. SO Scandinavian Journal of Work, Environment & Health PD 10VL PY 1991 BP 318 EP 323 IS 5 DI 10.5271/sjweh.1696 WP https://www.sjweh.fi/show_abstract.php?abstract_id=1696 SN 0355-3140 AB

A cluster initiated the present case-referent study to assess the relation between exposure to high-frequency electromagnetic radiation and congenital malformations. Through the linkage of a cohort formed from a union file of Danish physiotherapists with complete national registers of pregnancy outcome, cases (pregnancies terminated by the birth of a malformed child) and referents were identified. From responses in a blinded telephone interview without knowledge of case status, exposure to high-frequency electromagnetic radiation in the first month of pregnancy was assessed. Indices reflecting duration of exposure ("time") and maximum level of exposure ("peak") were composed. After a 7% dropout 54 cases and 247 referents were interviewed. No statistically significant associations between pregnancy outcome and high-frequency electromagnetic radiation were found (odds ratio 1.7, 95% confidence interval 0.6-4.3).

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