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Osamu Utsunomiya

Publications and source records attributed to Osamu Utsunomiya.

4 recordsLinked to original sources
PubMed2003

An epidemiological study on the effectiveness of workplace smoking control programs.

The workplace is an important field for smoking control, but there are relatively few reports on the current situation of workplace smoking control with the exception of reports from North-American countries. The aim of this study was to evaluate the effectiveness of workplace smoking control programs on the smoking prevalence among Japanese workers. A self-administered questionnaire regarding workplace smoking control programs was sent to 531 workplaces and a total of 315 workplaces returned the questionnaire. The number of employees in the study sample was 57,051 males and 19,818 females. The restriction of smoking area and/or time was found to be associated with a 13.1% and 44.5% decrease in smoking prevalence for males and females, respectively. The data were also analyzed, restricting to the workers in manufacturing industry which constituted the largest part of workers, in order to control a possible confounding arising from different characteristics among different industries. Restriction of smoking area and/or smoking time gave the largest effects of 15.4% and 36.2% lower prevalence in males and females, respectively. The differences observed in all female workers combined for individual consultation for smokers were also identified. In conclusion, it is suggested that workplace smoking control programs are effective at lowering the prevalence of workers who smoke.

Adult↗
PubMed2002

[Performance study of analytical method for ethoxyquin in fruit].

A performance study of an analytical method of ethoxyquin (ET) in apples and pears was conducted. In the proposed method, the sample was homogenized with thiourea and ET was extracted with acetone instead of hexane used in the official analytical method for ET, in order to improve the extraction efficiency. Furthermore, dibutyl hydroxytoluene was added in the test solution to prevent the decomposition of ET. For evaluation of the method. ET spiked into apples and pears at the level of 0.2 microgram/g was determined in replicate in six laboratories. Mean recoveries from apple, pear and Japanese pear were 85.3, 83.0 and 83.9%, respectively. Repeatability relative standard deviation values were 3.8-4.7% and reproducibility relative standard deviation values were 7.8-11.3%. The detection limits were 0.001-0.025 microgram/g in the six laboratories; this value may reflect instrument performance. ET spiked into apples and pears at the level of 0.2 microgram/g was detected by both LC/MS and GC/MS.

Antioxidants↗