摘要:

&NA;Readers are invited to submit letters for publication in this department. Submit to Doris Flournoy. Executive Editor, Journal of Occupational Medicine, 150 N. Wacker Drive. Chicago. IL 60606. Letters should be typewritten, double spaced and should be designated “For Publication.”

ISSN:0096-1736    

出版商:OVID    

年代:1979

数据来源: OVID

ISSN:0096-1736    

出版商:OVID    

年代:1979

数据来源: OVID

ISSN:0096-1736    

出版商:OVID    

年代:1979

数据来源: OVID

摘要:

&NA;The completeness of cohorts identified for historical prospective studies of occupational diseases is subject to many sources of error, including clerical oversight or negligence and poor company record‐keeping practices. It is impossible to verify the completeness of occupational cohorts based solely on plant records, since the company files themselves may not be 100% complete. This article presents a method of verification based on IRS records which is completely independent of company‐held records. The sensitivity and effectiveness of the method are demonstrated through the application of the verification scheme to an ongoing study of man‐made mineral fiber workers in the United States. In six participating plants, 1990 (21.4% of the original cohort) additional records were uncovered following an initial verification and a second complete survey of plant files. It is believed that, without independent verification, errors of this magnitude may be present in many historical prospective studies of this type. An independent verification should be incorporated into all occupational study designs which utilize historical plant records as the primary data base.

ISSN:0096-1736    

出版商:OVID    

年代:1979

数据来源: OVID

摘要:

&NA;Field tests are used in many occupations to screen and classify personnel for cardiorespiratory fitness. Presumably these tests yield predictive results which correlate well with maximal oxygen uptake (VO2max), the most widely‐accepted criterion of cardiorespiratory fitness. The purpose of this study was to validate one of the most popular field tests, the modified Kasch Pulse Recovery Step Test (KPRST), used by several emergency service agencies in Southern California. One hundred fourteen male state traffic officers from the California Highway Patrol, ranging in age from 24 to 56 years, performed treadmill VO2max tests to volitional fatigue and the modified KPRST. Heart rates taken during the first and last 10 seconds of the one‐minute recovery period for the modified KPRST compared against treadmill VO2max values yielded correlations of —0.25 and —0.27, respectively, indicating that the modified KPRST is a poor predictor of cardiorespiratory fitness for the population studied. These results suggest that agencies should carefully validate any predictive measure of cardiorespiratory health and performance before adopting that measure for screening purposes and cardiorespiratory classification.

ISSN:0096-1736    

出版商:OVID    

年代:1979

数据来源: OVID

ISSN:0096-1736    

出版商:OVID    

年代:1979

数据来源: OVID

ISSN:0096-1736    

出版商:OVID    

年代:1979

数据来源: OVID

ISSN:0096-1736    

出版商:OVID    

年代:1979

数据来源: OVID

摘要:

&NA;Eight generally accepted heart disease risk factors (age, sex, family history, blood pressure, cholesterol, weight, smoking and exercise) were used in the computation of a cardiac index (RISKO) for 4,066 safety personnel of the County of Los Angeles. Seventy‐one individuals subsequently developed coronary disease. The index had significant value in identifying the individuals who were to develop symptomatic coronary disease, and its discriminative power was comparable to the power of the Framingham index.

ISSN:0096-1736    

出版商:OVID    

年代:1979

数据来源: OVID

摘要:

&NA;In 1974 a study was undertaken to assess the symptoms and pulmonary function of a group of 25 workers who were exposed to an epoxy resin system in the mold room of a ski manufacturing plant. The amine 3‐dimethylamino propylamine (3‐DMAPA) was the only volatilized substance. Assemblers, the sub‐group with the highest breathing zone exposure to 3‐DMAPA (0.9 ppm), had the highest prevalence of symptoms and a significant decrease in lung function over the workshift. Extensive improvements in local ventilation reduced the average breathing zone exposure to nearly one‐seventh of the 1974 concentration. A 1977 cross‐sectional study showed that at this level there was a marked reduction in symptoms and the expiratory function of assemblers no longer decreased over the workshift. Longitudinal comparison of the lung function of workers exposed more than two years showed evidence of a decrease from 1975 to 1977, but none from 1977 to 1978.

ISSN:0096-1736    

出版商:OVID    

年代:1979

数据来源: OVID