Ascertainment corrected prevalence rate (ACPR) of leukopenia in workers exposed to benzene in small-scale industries calculated with capture-recapture methods.
ACPRs of leukopenia in peripheral blood of workers exposed to benzene in small-scale industries are calculated using capture-recapture methods. The results from two figures with 6-month apart demonstrate that the ACPR in workers exposed to benzene is 36.81(29.14-44)%, significantly higher than that of control 12.71(7.20-18.22)% (P < 0.05), with a relative risk of 2.9. The prevalences of 4 cross-sectional investigations in exposure group calculated with routine method are 18.73%, 26.37%, 27.93%, and 36.76% respectively; in controls, 8.38%, 6.85%, 7.94%, and 15.00% respectively and all fall in the range of 95% CI of ACPR. It is suggested that the methods of calculating ACPR by capture-recapture methods is simple, feasible and efficient, with the results more precise than with traditional methods.
Xia
Z L
ZL
School of Public Health, Shanghai Medical University, China.
Jin
X P
XP
Lu
P L
PL
Gu
X Q
XQ
LaPorte
R E
RE
Tajima
N
N
D000328:Adult; D000395:Air Pollutants, Occupational / Q000009:adverse effects*; D001554:Benzene / Q000009:adverse effects*; D002617:Chemical Industry; D002681:China / Q000453:epidemiology; D003430:Cross-Sectional Studies; D006801:Humans; D007970:Leukopenia / Q000139:chemically induced / Q000453:epidemiology*; D008875:Middle Aged; D009784:Occupational Diseases / Q000139:chemically induced / Q000453:epidemiology*; D016273:Occupational Exposure; D015995:Prevalence; D018570:Risk Assessment
D000395:Air Pollutants, Occupational; D001554:Benzene