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Objective To understand the perceived stress of science and technology professionals (STPs) and its influencing factors and to provide reference for targeted mental health promotion. Methods Totally 1 730 STPs in Zhejiang Province were recuited by typical sampling method and assessed with Perceived Stress Questionnaire (PSQ) . Chi-squared automatic interaction detector (CHAID) with decision tree analysis was conducted to clarify the factors which influenced the scores of each dimension on PSQ. Results Totally 1 730 questionnaires were issued and 1 552 were valid (88.55%) . The perceived stress of male STPs was higher than that of female STPs (P＜0.05) . CHAID with decision tree analysis indicated that age was the primary factor for the perceived stress of housing (F=52.306, P＜0.001) , workload (F=17.814, P＜0.001) , career development (F=57.028, P＜0.001), household income (F=68.573, P＜0.001) and other personal problems (F=13.936, P=0.001) ;gender was the primary factor for the perceived stress of social understanding (F=9.321, P=0.002) and social environment (F=10.738, P=0.001) ; occupation was the primary factor for the perceived stress of supporting parents and children (F=19.810, P＜0.001) ; education background was the primary factor for the perceived stress of on the scores of interpersonal relationship (F=13.936, P=0.001) . Conclusion Age, gender, occupation, and education background are the influencing factors for perceived stress of STPs in Zhejiang Province.
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OBJECTIVE: To explore the effect of positive-pressure ventilation on dust removal in whole lung lavage( WLL).METHODS: By random sample method,21 patients with stage Ⅱ or Ⅲ pneumoconiosis were chosen for different WLL.Using the patients' own left and right lung was used for matched control study. The positive pressure ventilation was performed at the end of the 3rd,6th,9th and 12 th lavage in treatment lung( treatment groups). The positive-pressure ventilation was not implemented at the end of the 3rd and 6th lavage in the contralateral lung( control groups) but implemented at the end of the 9th,11 th and 12 th lavage. The recovery of lavage fluid,dust and dust concentration drained from 4th to 9th lavage were compared in the two groups. RESULTS: There was no statistical difference in the recovery of the lavage fluid in the 4th to 9th lavage in the two groups( P > 0. 05). The amount of dust and the dust concentration in the fourth lavage drainage in the treatment group was higher than that in the control group( P < 0. 01). The amount of dust and the dust concentration in the 6th,8th and 9th lavage drainage in the treatment group was lower than that in control group( P < 0. 01). The amount of dust and the dust concentration in the 3rd positive pressure ventilation were higher than that in the 6th positive pressure ventilation in the treatment group( P < 0. 01). The total amount of dust in the treatment group was higher than that in the the control group( P < 0. 01). CONCLUSION: In whole lung lavage,the positive pressure ventilation can accelerate the discharge of dust in the lung of patients with pneumoconiosis.
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Objective To analyze the mental health status among Chinese officials for providing the evidence for mental health promotion.Methods Meta -analysis was used.The data were extracted from 1 995 to 201 2 published papers on the mental health of Chinese officials.And the results was compared with the norm established in 2006.Results The scores of SCL -90 scale among the police officials were significantly higher than that of the norm(P <0.05)and the effect fell in the middle effect scope of Cohen(0.2 <d <0.8),while there was no significant difference between the non -police group and the norm on the score (P >0.05 ).Conclusion The meta -analysis demonstrates that the mental health of Chinese officials is not optimistic.More attention should be paid to promote the officials'mental health.