SANGYO EISEIGAKU ZASSHI
Online ISSN : 1349-533X
Print ISSN : 1341-0725
ISSN-L : 1341-0725
Volume 55 , Issue 4
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Original
  • Maki Shiozaki, Nobuyuki Miyai, Ikuharu Morioka, Miyoko Utsumi, Hiroaki ...
    2013 Volume 55 Issue 4 Pages 115-124
    Published: 2013
    Released: August 15, 2013
    [Advance publication] Released: May 15, 2013
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    Objectives: Compared to other public employees, police officers have higher absence rates due to heart diseases, and ischemic heart disease (IHD) is one of the most frequent causes of death in their occupational life. The aim of this study was to investigate the prevalence of the risk factors for IHD among police officers and to examine its association with working conditions and lifestyles. Methods: First, 58 male police officers who developed IHD from 1996 to 2011 and 116 age- and rank-matched controls who were free from cerebro- and cardiovascular diseases were compared with respect to the prevalence of traditional risk factors five years before the onset of IHD. Then, the prevalence of IHD risk factors, and the frequency of metabolic syndrome (MetS) by age group, working condition and lifestyle were investigated in a cross-sectional survey of data of 1,539 male police officers and 153 male office workers in a prefectural police force. Results: In the case control study, the IHD cases had significantly higher prevalences of hypertension (p<0.001), hyper-LDL-cholesterolemia (p<0.05), glucose intolerance (p<0.05), and hyperuricemia (p<0.05) before the onset of IHD. Multiple logistic regression analysis revealed that hypertension (odds ratio [95% confidence interval] : 3.96 [1.82–8.59]), glucose intolerance (3.28 [1.34–8.03]), hypo-HDL-cholesterolemia (2.26 [1.03–4.97]), and hyper-LDL-cholesterolemia (2.18 [1.03–4.61]) were independently associated with the development of IHD (model chi-square, p<0.001; correct classification rate, 77.0%). In the cross sectional analyses, among the police officers, abdominal obesity (waist circumference of ≥85 cm) was significantly more frequent (57.3% vs. 35.3%, p<0.001) and the prevalence of dyslipidemia and glucose intolerance increased with age more remarkably than in the general office workers. In the age-group of 45–59 years, the clustering number of risk factors in individuals (1.8 vs. 1.4, p<0.01) and the frequency of MetS (25.0 vs. 15.5, p<0.1) were greater in the police officers than the office workers. Among the police officers, subjects with MetS had significantly higher rates of shift work (33.6% vs. 25.4%, p<0.01), lack of sound sleep (42.5% vs. 33.7%, p<0.01), and heavy drinking (12.8 vs. 6.3%, p<0.01) than those without MetS. Conclusions: In this study, the development of IHD in police officers was significantly associated with traditional risk factors, especially with hypertension, dyslipidemia and glucose intolerance. The increase with age of the prevalence of IHD risk factors and the frequency of MetS were greater in police officers than office workers. Irregular working conditions, such as shift work, long working time, and unfavorable lifestyles, e.g. alcohol drinking and poor sleeping conditions, may influence the higher prevalence of risk factors for IHD in police officers.
  • Keiko Seki Sakakibara, Hirono Ishikawa, Takahiro Kiuchi
    2013 Volume 55 Issue 4 Pages 125-134
    Published: 2013
    Released: August 15, 2013
    [Advance publication] Released: May 15, 2013
    JOURNALS FREE ACCESS FULL-TEXT HTML
    Supplementary material
    Purpose: Mentoring is defined as a supporting behavior whereby a knowledgeable and experienced person (mentor) supports an inexperienced person (mentee) in order to develop his/her career and psychosocial aspects. Empirical studies on mentoring in the U.S. and Europe have shown that a high level of mentoring support is associated with greater career success among mentored individuals, such as job satisfaction and organizational commitment, better mental health as well as work life conflict. We translated a 9-item version of Mentoring Functions Questionnaire (MFQ-9, Castro et al. 2004), one of the most frequently used mentoring measures, and examined the internal consistency, reliability, and factor-based and concurrent validities of this measure. Method: In January 2012, we conducted a web survey of internet survey monitors working as employees of private companies and analyzed the data of 357 respondents without missing answers. The questionnaire included the Japanese MFQ-9, job satisfaction, and organizational commitment as well as demographic variables. Results: Cronbach alpha coefficients of MFQ-9 and its three subscales were all above 0.7 (0.75–0.77). The hypothesized three factors (career support, psychosocial support, and role modeling) were extracted by factor analysis. In the confirmatory factor analysis, assuming that there were three factors, fit indices were 0.96, 0.94, 0.97, and 0.05 for GFI, AGFI, CFI, and RMSEA respectively. Concurrent validity was supported by expected correlations of MFQ-9 with job satisfaction (r=0.20, p<0.01) and organizational commitment (r=0.17, p<0.01). As for subscales, career support and role modeling correlated with job satisfaction (r=0.14 and 0.15, respectively; both p<0.01) and commitment (r=0.17 and 0.14, respectively; both p<0.01), while psychosocial support was correlated only with job satisfaction (r=0.14, p<0.01). Conclusions: While issues such as the relationship between psychosocial support with organizational commitment will be a topic for further research, this study has shown that the Japanese version of MFQ-9 has an acceptable level of reliability and validity.
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