Supanwadee Chanthopas. Appropriate linear models of factors influencing occupational stress among commercial pilots in Thailand . Master's Degree(Biostatistics). Mahidol University. : Mahidol University, 2005.
Appropriate linear models of factors influencing occupational stress among commercial pilots in Thailand
Abstract:
The objectives of this research were to find out the appropriate linear models, identify and study the factors influencing occupational stress, and study the level of occupational stress among commercial pilots in Thailand. The sample consisted of 233 commercial pilots who had renewed there commercial pilot licenses from The Department of Civil Aviation, Thailand, in 2005. The data were collected by self-administered questionnaires which included personal characteristics, organizational factors, the external organizational factor, and the psychological and physical symptoms of stress. The data was collected from January to March 2005. Descriptive statistics, Pearsons product correlation coefficient, Chi-square, and four methods multiple regression, namely, all possible best subset regression, stepwise regression, backward elimination, and forward elimination were used to analyze data. Results indicated that commercial pilots had occupational stress related to psychological symptoms scores at a moderate level with mean score and standard deviation of 28.25 and 7.60 scores respectively. Occupational stress related to physical symptoms scores was at a moderate level with mean score and standard deviation of 11.24 and 7.04 scores respectively. The multiple regression analysis showed that appropriate linear model of factors influencing occupational stress related to psychological symptoms could explain 37 percent of variance in occupational stress related to psychological symptoms. The model included age, company, number of flights in the previous month, factors intrinsic to job, organizational structure, career development, family support and interaction between organizational structure and career development. The appropriate linear model of factors influencing occupational stress related to physical symptoms could explain 16.5 percent of variance in occupational stress related to physical symptoms. The model included age, number of flights in the previous month, factors intrinsic to job, and family support