. Author manuscript; available in PMC: 2014 Aug 26.

Published in final edited form as: J Toxicol Environ Health A. 2013;76(19):1111–1120. doi: 10.1080/15287394.2013.840708

Table 1.

Means and percentiles for blood lead (PbB) levels obtained for cohorts of lead-exposed Ecuadorian Andean adults during the years 1996, 1997, 1998, 2003, 2006, 2007 and 2012. Standard deviation values are shown in parentheses below the mean values.

	PbB Level Monitoring Year
	1996 (n 41)	1997 (n 25)	1998 (n 32)	2003 (n 14)	2006 (n 23)	2007 (n 10)	2012 (n 39)
Mean	37.9 (22.8)	18.2 (14.0)	16.1 (13.0)	16.1 (10.3)	25.8 (22.7)	30.1 (17.4)	22.7 (16.3)
10^th Percentile	10.6	6.9	5.8	4.3	3.0	3.0	4.4
25^th Percentile	16.8	8.4	9.2	5.4	5.2	21.0	9.2
50^th Percentile	35.3	12.8	12.5	15.4	17.0	32.5	19.0
75^th Percentile	54.5	20.1	18.1	26.1	46.2	45.0	34.6
90^th Percentile	72.3	46.4	30.4	28.2	58.8	51.5	48.6