. Author manuscript; available in PMC: 2009 Sep 26.

Published in final edited form as: Toxicol Lett. 2008 Jul 23;181(2):118–125. doi: 10.1016/j.toxlet.2008.07.009

Table 1.

Summary of Demographic information

	Control (n=19)	Cases (n=15)
Age (year) (95% CI)	36.7±9.5 (32.1~41.3)	35.5±7.9 (31.1~39.7)
Sex (male/female) (95% CI)	15/4	13/2
Year of employment (year) (95% CI)	12.32±9.53 (7.7~16.9)	16.60±8.54 (11.9~21.3)
Education (year) (95% CI)	14.11±0.737 (13.7~14.5)	13.67±0.617 (13.3~14.0)
Cigarette Smoking	7 (36.8%)	6 (40.0%)
Alcohol	14 (73.7%)	10 (66.7%)
Air Pb fume level (mg/m³)^#	0.00	0.24±0.32 (0.01~1.25)^**
Air Pb dust level (mg/m³)^#	0.00	0.98±1.29 (0.01~3.97)^**
BPb (µg/dL) (95% CI)	8.74±1.91 (6.1~12.2)	63.5±20.9 (17.4~89.6) ^**

^**

p<0.01 compared with the control group.

Note: for airborne Pb levels in working environment, sample numbers were 15, 17 and 10 for Pb in fume, Pb in dust and airborne Pb in control sites, respectively.