Engaging a hard-to-reach population in research

Sampling and recruitment of hired farm workers in the MICASA study

M. T. Stoecklin-Marois, T. E. Hennessy-Burt, Marc B Schenker

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Hired farm workers provide the majority of the workforce for California's labor-intensive agricultural sector. Agriculture is one of the most hazardous occupations, but there has been little research into the etiology of poor health outcomes that occur disproportionately in hired farm worker populations. MICASA is a cohort investigation of occupational and environmental health risks in hired farm worker households in Mendota, California, that employed a two-stage sampling process, including random selection of census blocks and door-to-door enumeration. The aim of this analysis was to evaluate the success of the sampling process and compare demographics of the enumerated population to other regional samples of Latino populations. In the enumeration, 1257 addresses were mapped and 729 hired farm worker households were enumerated. Findings showed no significant differences between the enumerated population and the resulting MICASA study sample; however, the MICASA population was more likely to be male, from Central America, work in agriculture, and have fewer years residency in the U.S. than California Health Interview Survey (CHIS) respondents. Additionally, 9.4% of the enumerated dwellings were back houses or unofficial dwellings and may have been missed by the U.S. Census 2000. Demographic comparisons between the enumerated population, census data, and CHIS data highlight the differences in these sampling methods and suggest possible demographic changes in hired farm workers in California. While difficulties in accessing hired farm workers often account for the lack of population-based research, the MICASA cohort provides an opportunity to examine occupational health patterns relevant to other farm worker populations.

Original languageEnglish (US)
Pages (from-to)291-302
Number of pages12
JournalJournal of Agricultural Safety and Health
Volume17
Issue number4
StatePublished - 2011

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farm labor
Farms
Sampling
Research
Population
Censuses
occupational health and safety
sampling
demographic statistics
Demography
Agriculture
Occupational Health
Health Surveys
households
interviews
Health
Interviews
agriculture
Health risks
Central America

Keywords

  • Farm workers
  • Hard-to-reach populations
  • Occupational health
  • Sampling

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Safety, Risk, Reliability and Quality
  • Public Health, Environmental and Occupational Health

Cite this

Engaging a hard-to-reach population in research : Sampling and recruitment of hired farm workers in the MICASA study. / Stoecklin-Marois, M. T.; Hennessy-Burt, T. E.; Schenker, Marc B.

In: Journal of Agricultural Safety and Health, Vol. 17, No. 4, 2011, p. 291-302.

Research output: Contribution to journalArticle

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