Adverse Reproductive Events and Electromagnetic Radiation.
Department of Epidemiology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, Maryland 1991 Jul:43 pages
In 1989 approximately 42,000 questionnaires were mailed to female physical therapists to assess the risk of adverse reproductive effects among those exposed to electromagnetic radiation at radiofrequencies. From the resulting data, the risk of early recognized fetal loss was assessed using a nested case/control design. The cases (1753 miscarriages) were matched to controls (1753 other pregnancies except ectopics) on mothers age at conception and the number of years elapsed between conception and interview. The results of the study indicate that female physical therapists who work with microwave diathermy 6 months prior to the pregnancy and/or during the first trimester were at increased risk of experiencing a recognized early fetal loss, but female physical therapists who work with shortwave diathermy were not at an increased risk. This association was shown to hold even when the mother's age at conception, the number of years elapsed between conception and interview, the number of prior early fetal losses, mother's conditions ever diagnosed, and use of other modalities were controlled. The data also suggest a possible association between exposure to transcutaneous electrical nerve stimulation with an elevated risk of early recognized fetal loss.
NIOSH-Grant; Reproductive-system-disorders; Epidemiology; Reproductive-system-disorders; Reproductive-hazards; Radiation-exposure; Health-care-personnel; Microwave-radiation; Physical-therapy; Nonionizing-radiation;
Epidemiology Johns Hopkins University 615 N Wolfe Street Baltimore, MD 21205
Final Grant Report;
NTIS Accession No.
Fertility and Pregnancy Abnormalities; Disease and Injury; Reproductive-system-disorders;
Department of Epidemiology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, Maryland
Johns Hopkins University, Baltimore, Maryland