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Table 2 Demographic distribution in study population

From: Longitudinal follow-up of health effects among workers handling engineered nanomaterials: a panel study

VariablesControl (n=108)RL1 (n=108)RL2 & RL3 (n=98) 
n%n%n%p-valuea
Age
36yrs5349.076257.415758.160.34
 >36yrs5550.934642.594141.84 
Gender
 Female2926.852321.301818.370.33
 Male7973.158578.708081.63 
Ethnicity
 Taiwanese or South Fujienese8578.708982.417374.490.36
 Hakkanese1614.8198.331717.35 
 Others76.48109.2688.16 
Education
 Senior high school1917.591412.962020.41<0.01
 College6257.414743.523333.67 
 Institute or higher education2725.004743.524545.92 
Smoking
 No9587.969688.897778.570.07
 Yes1312.041211.112121.43 
Alcohol Drinking
 No10193.5210395.378182.65<0.01
 Yes76.4854.631717.35 
Chewing betel nut
 No10799.07108100.009394.900.02
 Yes10.9300.0055.10 
  1. aChi-square analysis
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