Objective To explore the influencing factors of coal workers''''cognitive function. Meth-ods There was a physical examination on 3205 workers in the coal mine enterprise.The physical examina-tion included height,weight,blood pressure,blood routine examination and routine urine test,and Mini Men-tal State Examination (MMSE) was used to evaluate the cognitive function.The coal workers were divided in-to cognitive dysfunction group (84 cases) and cognitive function normal group (3121 cases) according to MMSE scores.Logistic regression analysis was used to explore the influencing factors of cognitive function. Results The prevalence of cognitive dysfunction was 2. 62％ in coal workers. The age of the cognitive dys-function group(47.27±8.24) was significantly higher than that in the cognitive function normal group (41.39 ±8.65)(P<0.05),and the degree of culture in cognitive dysfunction group was significantly lower than those in the cognitive function normal group (χ2= 46. 610, P<0. 01 ) . The low density lipoprotein cholesterol ((2.72±0.65)mmol/L),urine pH(5.54±1.51) in the cognitive dysfunction group were significantly lower than those in the cognitive function normal group((2.89±0.73)mmol/L,(5.92±1.28))(P<0.05). The lo-gistic regression analysis showed that age, culture level, BMI, low density lipoprotein cholesterol, urine pH were the impacting factors of cognitive dysfunction. Conclusion Cognitive dysfunction is influenced by age, culture level,BMI and low density lipoprotein cholesterol. The higher of the age and the lower of the culture level,BMI,low density lipoprotein cholesterol,urine pH,the more vulnerable to cognitive dysfunction.

Objective To carry out a control study on the mental health,perceived stress,and coping styles of executives and underground workers in coal enterprise.Methods Totally 238 executives of state-owned coal enterprise and 240 underground workers were tested by symptom self-assessment scale (SCL-90), perceived stress scale and simple coping style scale. Then the test results were analyzed.Results according to the SCL-90 results,the total score of coal enterprise executives was (123.670±27.850) and it was lower than that of national norm (t=-3.151,P<0.01). The total score of underground workers was (138.610±49.720) and it was higher than that of national norm (t=2.882,P<0.01). The difference between them was significant (t=-4.05,P<0.01);the score of perceived stress of enterprise executives (15.70±7.37) was lower than that of underground workers (t=-9.553,P<0.01);the scores of positive coping of executives were (2.04±0.43),and they were significantly higher than those of the underground workers (t= 2.886,P<0.01);the scores of negative coping of executives were (1.06±0.49),and they were significantly lower than those of the underground workers (t=-9.225,P<0.01).Conclusions Executives of coal enterprise get a better psychological health level than underground workers;the executives are not sensitive to perceived stress;and they use more positive coping styles to deal with difficulties and setbacks. The underground workers are sensitive to perceived stress,and they use more negative coping styles to deal with difficulties and setbacks.