A nested case-control study of residential and personal magnetic field measures and miscarriages
Authors not listed · 2002
Personal magnetic field metrics measured at 30 weeks showed positive associations with miscarriage, while wire codes and area measures showed little association.
Plain English Summary
Researchers conducted a nested case-control study with 177 cases and 550 controls to assess the relation between retrospective magnetic field measures and clinical miscarriage among Kaiser Permanente members in northern California. They evaluated wire codes, area measures, and three personal meter metrics including rate-of-change, maximum level, and time-weighted average. For personal metrics at 30 weeks, adjusted odds ratios for the highest quartile were 3.1 for rate-of-change, 2.3 for maximum value, and 1.7 for time-weighted average. A prospective substudy of 219 participants found exposure measurements at 12 weeks were poorly correlated with those at 30 weeks, yet miscarriage risk results were consistent with the nested study.
Why This Matters
Each exposure metric was divided into quartiles with the lowest quartile serving as the referent group for odds ratio calculations. The odds ratio for being above a 24-hour time-weighted average of 2 milligauss was 1.0 with a 95% confidence interval of 0.5 to 2.1.
Show BibTeX
@article{a_nested_case_control_study_of_residential_and_personal_magnetic_field_measures_and_miscarriages_ce1515,
author = {Unknown},
title = {A nested case-control study of residential and personal magnetic field measures and miscarriages},
year = {2002},
doi = {10.1097/00001648-200201000-00005},
}