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作者 Ling, Kok Yan
書名 Demographic analysis of Certified Industrial Hygienists (CIH) with the use of survival analysis techniques
國際標準書號 9781124360140
book jacket
說明 52 p
附註 Source: Masters Abstracts International, Volume: 49-03, page: 1855
Adviser: Lawrence Whitehead
Thesis (M.P.H.)--The University of Texas School of Public Health, 2010
Objective. The goal of this study is to characterize the current workforce of CIHs, the lengths of professional practice careers of the past and current CIHs
Methods. This is a secondary data analysis of data compiled from all of the nearly 50 annual roster listings of the American Board of Industrial Hygiene (ABIH) for Certified Industrial Hygienists active in each year since 1960. Survival analysis was performed as a technique to measure the primary outcome of interest. The technique which was involved in this study was the Kaplan-Meier method for estimating the survival function
Study subjects: The population to be studied is all Certified Industrial Hygienists (CIHs). A CIH is defined by the ABIH as an individual who has achieved the minimum requirements for education, working experience and through examination, has demonstrated a minimum level of knowledge and competency in the prevention of occupational illnesses
Results. A Cox-proportional hazards model analysis was performed by different start-time cohorts of CIHs. In this model we chose cohort 1 as the reference cohort. The estimated relative risk of the event (defined as retirement, or absent from 5 consecutive years of listing) occurred for CIHs for cohorts 2,3,4,5 relative to cohort 1 is 0.385, 0.214, 0.234, 0.299 relatively. The result show that cohort 2 (CIHs issued from 1970-1980) has the lowest hazard ratio which indicates the lowest retirement rate
Conclusion. The manpower of CIHs (still actively practicing up to the end of 2009) increased tremendously starting in 1980 and grew into a plateau in recent decades. This indicates that the supply and demand of the profession may have reached equilibrium. More demographic information and variables are needed to actually predict the future number of CIHs needed
School code: 0219
Host Item Masters Abstracts International 49-03
主題 Health Sciences, Occupational Health and Safety
Environmental Health
Sociology, Demography
Alt Author The University of Texas School of Public Health. Environmental & Occupational Health Sciences
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