Treatment of Lead-exposed Children (TLC) trial: Enrollment

The Wayback Machine - https://web.archive.org/web/19990222112636/http://dir.niehs.nih.gov:80/direb/tlc1/enroll.htm

Treatment of Lead-exposed Children Trial

Enrollment by Race
& Clinical Center

RACE	Baltimore		Newark		Philadelphia		Cincinnati		TOTAL
White	12	5.6%	4	1.9%	6	3.6%	67	34.5%	89	11.4%
Black	186	87.3%	146	70.2%	143	86.7%	120	61.9%	595	76.3%
Hispanic^#	1	0.5%	42	20.2%	4	2.4%	1	0.5%	48	6.2%
Asian	0	0.0%	1	0.5%	1	0.5%	0	0.0%	2	0.3%
Pacific Islander	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
Native American	1	0.5%	1	0.5%	0	0.0%	1	0.5%	3	0.4%
Other	5	2.3%	14	6.7%	7	4.2%	4	2.1%	30	3.8%
Unknown	8	3.8%	0	0.0%	4	2.4%	1	0.5%	13	1.7%
TOTAL^*	213		208		165		194		780

^#Only the Newark TLC clinical center had Spanish language staff and consent documents, and thus could enroll families for which Spanish was the language spoken in the home.

^* Enrollment in TLC, which began September 7, 1994, was completed on January 22, 1997, with 780 total children. Each child will have 3 years of follow up, with periodic medical and psychometric evaluations, cultimating in a final developmental assessment at the 3-year visit. Final developmental assessments should be completed by January 2000.

TLC

NIEHS Epidemiology Branch

Jan	FEB	Mar
	22
1998	1999	2000

Treatment of Lead-exposed Children Trial Enrollment by Race& Clinical Center

Treatment of Lead-exposed Children Trial

Enrollment by Race
& Clinical Center