Male:Female Birth Ratios and Phthalate Levels
2 other identifiers
observational
300
1 country
3
Brief Summary
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.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started May 2009
Longer than P75 for all trials
3 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
May 15, 2009
CompletedStudy Start
First participant enrolled
May 15, 2009
CompletedFirst Posted
Study publicly available on registry
May 18, 2009
CompletedPrimary Completion
Last participant's last visit for primary outcome
February 9, 2017
CompletedStudy Completion
Last participant's last visit for all outcomes
February 9, 2017
CompletedFebruary 13, 2017
February 1, 2017
7.7 years
May 15, 2009
February 10, 2017
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Prevalence of exposure to chemical/toxins (Survey Responses)
3 Years
Study Arms (1)
Mexican American Men and Women
Rural and urban Mexican American men and women , aged 18 to 40, in urban Baytown, TX and rural Rio Grande Valley (Hidalgo County) communities along the Texas-Mexico border
Interventions
Questionnaire about family's characteristics taking about 30-35 minutes to complete.
Eligibility Criteria
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 for at least 45 years.
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
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (3)
Goose Creek Consolidated Independent School District
Baytown, Texas, 77521, United States
Texas Southern University
Houston, Texas, 77004, United States
LaJoya Independent School District
La Joya, Texas, 78560, United States
Related Links
Biospecimen
Urine sample.
MeSH Terms
Conditions
Interventions
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Richard A. Hajek, PHD, MS, BA
M.D. Anderson Cancer Center
Study Design
- Study Type
- observational
- Observational Model
- CASE ONLY
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
May 15, 2009
First Posted
May 18, 2009
Study Start
May 15, 2009
Primary Completion
February 9, 2017
Study Completion
February 9, 2017
Last Updated
February 13, 2017
Record last verified: 2017-02