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Table 1 Demographic and clinical characteristics

From: Telomere length in peripheral leukocytes is a sensitive marker for assessing genetic damage among workers exposed to isopropanol, lead and noise: the case of an electronics manufacturer

Variables Isopropanol
(= 248)
Lead
(= 182)
Noise
(= 157)
Control
(= 112)
P value
Male, n (%) 207(83.5) 150(82.4) 118(75.2) 83(74.1) 0.066
Age, years, mean±SD 24.86±3.85 27.26±6.25 31.98±7.94 25.73±7.44 <0.001
BMI, kg/m2, mean±SD 21.25±2.93 21.17±3.09 22.33±2.98 20.50±2.87 <0.001
Race Han, n (%) 229(92.3) 165(90.7) 149(94.9) 99(88.4) 0.244
Education, n (%)
 Middle school or lower 50(20.2) 38(20.9) 13(8.3) 38(33.9) <0.001
 High school 130(52.4) 66(36.3) 129(82.2) 65(58.0)  
 College or higher 68(27.4) 78(42.9) 15(9.6) 9(8.0)  
Current smoker, n (%) 75(30.2) 53(29.1) 68(43.3) 34(30.4) 0.018
Current drinker, n (%) 44(17.7) 44(24.2) 57(36.3) 10(8.9) <0.001
Job duration, years, M (P25, P75) 3.0(2.0,4.59) 2.8(1.7,4.0) 3.0(1.7,5.0) - 0.391
Exposure duration, years, M (P25, P75) 3.0(1.84,4.6) 3.0(1.92,4.9) 3.0(1.7,5.0) - 0.867
rTL, M (P25, P75) 1.06(0.71,1.43) 0.88(0.64,1.48) 0.69(0.38,1.01) 1.07(0.84,1.28) <0.001
  1. BMI body mass index, rTL relative telomere length