Hired farm workers provide the majority of the workforce for California's labor-intensive agricultural sector, and they also suffer the greatest health burden. California's hired farm workers face increased risks of morbidity and mortality from respiratory disease, musculoskeletal problems, infectious diseases, stress- related mental health disorders and lifestyle-related diseases such as obesity. There has been very little research into the etiology of the poor health outcomes that occur disproportionately in this population. The overall goal of this proposed project is to continue with a longitudinal follow-up of a cohort of hired farm worker families in California that was established through supplemental funding from NIOSH. We propose to conduct two follow-up assessments of the MICASA study cohort in Mendota, California to assess the incidence and prevalence of diseases in this population. These follow-up assessments will be conducted on the 400 families comprising our farm worker cohort in Mendota. Interviews will be conducted with all MICASA study participants (both the head of household and spouse) twice during the five-year study period. We will also conduct pulmonary function testing, measure vital signs and take anthropometric measurements at two time periods in the population. Finally, the exposure assessment component will collect quantitative data on particulate exposure in this population.
The specific aims of the study are to: 1) measure the incidence of respiratory symptoms and agricultural injuries and assess the independent association of agricultural exposures and lifestyle factors to respiratory symptoms, agricultural injuries, and musculoskeletal problems;2) examine the prevalence and determinants of atopy, asthma and asthma symptoms;3) determine levels of particulate matter exposure for tasks and crops commonly conducted by agricultural workers in our population;4) examine incident respiratory symptoms and changes in pulmonary function over time and assess the relationship between predictors such as occupational factors with incident symptoms and changes in pulmonary function. This approach allows us to address a wide range of factors affecting health including work, home environment, and personal health behaviors. This cohort is being established to improve understanding of important health risks and to provide a basis for the design of effective public health and clinical interventions, and ultimately to improve the health of this underserved population.

Agency
National Institute of Health (NIH)
Institute
National Institute for Occupational Safety and Health (NIOSH)
Type
Research Project (R01)
Project #
5R01OH009293-05
Application #
8286748
Study Section
Special Emphasis Panel (ZOH1-SBO (50))
Program Officer
Potula, Viji
Project Start
2008-04-01
Project End
2014-03-31
Budget Start
2012-04-01
Budget End
2014-03-31
Support Year
5
Fiscal Year
2012
Total Cost
$618,018
Indirect Cost
$121,628
Name
University of California Davis
Department
Public Health & Prev Medicine
Type
Schools of Medicine
DUNS #
047120084
City
Davis
State
CA
Country
United States
Zip Code
95618
Moran, Rebecca E; Bennett, Deborah H; Garcia, John et al. (2014) Occupational exposure to particulate matter from three agricultural crops in California. Int J Hyg Environ Health 217:226-30
Trunnelle, Kelly J; Bennett, Deborah H; Ahn, Ki Chang et al. (2014) Concentrations of the urinary pyrethroid metabolite 3-phenoxybenzoic acid in farm worker families in the MICASA study. Environ Res 131:153-9
Rodriquez, Erik J; Stoecklin-Marois, Maria T; Bennett, Deborah H et al. (2014) Agricultural work exposures and pulmonary function among hired farm workers in California (the MICASA study). J Agromedicine 19:427-36
McCurdy, Stephen A; Xiao, Hong; Hennessy-Burt, Tamara E et al. (2013) Agricultural injury in California Hispanic farm workers: MICASA follow-up survey. J Agromedicine 18:39-49
Trunnelle, Kelly J; Bennett, Deborah H; Tancredi, Daniel J et al. (2013) Pyrethroids in house dust from the homes of farm worker families in the MICASA study. Environ Int 61:57-63
Xiao, Hong; McCurdy, Stephen A; Stoecklin-Marois, Maria T et al. (2013) Agricultural work and chronic musculoskeletal pain among Latino farm workers: the MICASA study. Am J Ind Med 56:216-25