The population included workers in paint manufacturing that used solvents in combination with xylene and toluene.
The researcher coordinated with all five paint manufacturers in the Eastern Region; however, responses were obtained
from executives of two manufacturers to participate in the research.
The determination of the sample size applied a sample-size formula that would allow use of multiple logistic regressions to find the factors that had an impact on health, and the calculation of the sample size resulted in 173 persons.
The characteristics of the process in paint production are similar; thus the cluster sampling for two plants was selected for this study.
Every worker who worked in a process related to solvent exposure was eligible as a study subject.