title: [Meta-analysis and its application in epidemiology].
abstract: Meta-analysis provides a powerful statistical tool for epidemiological study. The basic principle of meta-analysis is introduced in this paper, and some problems about its application in epidemiology are discussed. This method was used by the authors to study the relationship between exposure to extreme low frequency electromagnetic fields (ELF) and childhood leukemia, and the result showed that there is a significant association between them.
authors.affiliation: Tongji Medical University, Wuhan.
authors.forename: J
authors.initials: J
authors.lastname: Lu
authors.forename: L
authors.initials: L
authors.lastname: Shi
mesh_terms: D004574:Electromagnetic Fields / Q000009:adverse effects*; D006801:Humans; D007953:Leukemia, Radiation-Induced / Q000453:epidemiology; D015201:Meta-Analysis as Topic