Male:Female Birth Ratios and Phthalate Levels

Completed

Conditions studied: Endocrine Diseases

In brief

Objective 1: To assess environmental exposure to chemicals/toxins, including phthalates, among rural and urban Mexican American men and women (n=300), aged 18 to 40, in urban Baytown, TX and rural Rio Grande Valley (Hidalgo County) communities along the Texas-Mexico border region via survey. Objective 2: To determine generational sex ratio trends in urban Baytown, TX and along the rural Rio Grande Valley (Hidalgo County) utilizing vital statistics data from the Texas Department of Health and the Center for Health Statistics. Objective 3: To measure urinary phthalate levels and self-reported phthalate exposure in Mexican American men and women from urban Baytown, Texas and rural communities along the lower Rio Grande Valley (Hidalgo County) on theTexas-Mexico border. To conduct an optional procedure, chromosomal sex determination, among a subgroup of 50 persons (13 men + 12 women in each community) from participants who complete the survey in Objective 1.

Key facts

Study ID

NCT00903318

Run by

M.D. Anderson Cancer Center

People needed

300

Starts

2009-05-15

Expected to finish

2017-02-09

Last updated by the study team

2017-02-13

Who can join

Age: 18 and older, up to 40. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Men and Women of Mexican American origin ages 18 to 40 years
• Residing in Baytown or the lower Rio Grande Valley in Hidalgo County, Texas
• Who have signed the informed consent
• Individuals will have had to reside in the study area for at least 5 years
• Pregnant women are eligible for the study.

You may not qualify if…

• None

Where it is running

• Goose Creek Consolidated Independent School District — Baytown, Texas, United States
• Texas Southern University — Houston, Texas, United States
• LaJoya Independent School District — La Joya, Texas, United States

Full record on ClinicalTrials.gov

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