Association between Genetic Polymorphisms of DNA Repair Genes and Chromosomal Damage for 1,3-Butadiene-Exposed Workers in a Matched Study in China

Table 2

Urinary metabolites of BD-exposed workers and controls (23 pairs).

	Exposure (p.p.b.)				Control (p.p.b.)
	Range	Selected percentile			Range	Selected percentile
		25th	50th (Median)	75th		25th	50th (Median)	75th
DHBMA	<10~1080.10	56.10	122.54^*	199.23	<10~214.76	<10	10.70	61.09

Compared between exposure group and matched controls, P < 0.01; p.p.b.: g/L.