[A cross-sectional study about the effects of residential exposure to power transmission line on human nervous system symptoms and hematology].
OBJECTIVE
To investigate the possible effects on nervous system and health condition under the exposure to electromagnetic field.


METHODS
Take the resident around the power transmission line as the objects and were divided into 3 groups by the distance from the power transmission line 20 m, 100 m and 500 m, respectively. Some living conditions and health conditions were recorded by face-to-face the questionnaire survey, and Hematological indices of each groups were examined including IgG, IgM, leukocyte formulae, erythrocyte, hemoglobin and platelet.


RESULTS
There was no significant difference in each group, according exposure of daily life, such as drinking and smoking (P > 0.05). Compared with the each distance groups, it was presented significant difference between the distance from the power transmission line and the incidence of headache or dizziness, insomnia and easy weary and so on (P < 0.05). In hematology aspect, with the horizontal distance from the power transmission line decreasing, PLT level of residents was reductive and the difference was statistically significant (P < 0.001), whereas leukocyte formulae, erythrocyte, hemoglobin, IgG and IgM had no significant difference among each group (P < 0.05).


CONCLUSIONS
Closely exposure to electromagnetic field may induce headache and so on and decrease the level of PLT.
Department of Occupational health, Wuhan University of Science and technology, Wuhan, China.
Lei
L
Wu
Jia-wu
JW
Feng
Xiao-wu
XW
Peng
Yong
Y
Mei
Yu-qing
YQ
Shi
Gao-feng
GF
Jiang
Fang-li
FL
Ye
Shi-zhen
SZ
Song
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D004574:Electromagnetic Fields; D004781:Environmental Exposure; D005260:Female; D006403:Hematologic Tests; D006798:Housing; D006801:Humans; D008297:Male; D008875:Middle Aged; D009420:Nervous System / Q000503:physiopathology*; D011209:Power, Psychological; D011795:Surveys and Questionnaires; D055815:Young Adult