Objective To study the health state and service of the elderly in the Tongbai community. Methods The educational degree, disease histories, daily living capability, health care demand and the controlled state of hypertension and diabetes were recorded by questionnaires and physical examination. Results Overweight or obesity (66.1%) was the common disease, hypertension (42.2%) next, then coronary disease (10.0%) and diabetes (9.1%). Nearly 43.3% hypertension patients never or seldom measured their blood pressure. The rate of ideal blood pressure was lower than 25%. 30.4% diabetes patients never or seldom measured their fasting glucose and 69.3% patients never or seldom measured their post-meal glucose. 46.1% of the elderly required one or more kinds of community health services, in which annual health examination was 32.6%, and the next was health guide (23.0%), 53.9% of the elderly had no requirement of community services except medical care. Conclusion The elderly in community had high prevalence and poor control of chronic diseases. They did not fully understand the community health services, which brought the challenges to the medical care, health prevention, health education and reasonable utility of hygiene resources in community health services.

Objective To develop a multidimensional self-report health measurement scale for accurate evaluation of health status in Chinese adults. Methods Delphi method was used to select health measurements. Item database was set up based on available questionnaires. A total of 1858 individuals from Beijing, Hebei ,Tianjin, Shanxi and other provinces of China received field pretest. Results A self-report health assessment tool with 90 items was developed, Cronbach a coefficient of which was 0. 669 to 0. 917,split-half reliability 0. 572 to 0. 877, and test-retest reliability 0. 693 to 0. 896. Six factors from exploratory factor analysis accounted for 71.732% total variance,with the common factor＞0.4. Confirmatory factor analysis showed good fit index and construct validity. Conclusion The newly developed self-rated health measurement scale ,which involves six dimensions and 90 items ,shows good reliability and validity.

Objective Space radiation is an important environmental factor affecting the health and efficiency of astronauts.To explore the effects of radiation on electroencephalogram(EEG)signal,and to provide references for further study of the effects of radiation on Central Nervous System(brain)injury.Methods The resting state EEG of radiotherapy volunteers were collected before and after X-ray exposure.The effects of radiation on EEG was studied by means of spectral analysis,nonlinear dynamic characteristic analysis,correlation coefficient analysis and microstate analysis.Results The results show that radiation induced a"slow wave"phenomenon in the EEG spectrum,with a decrease in Gravity Frequency,Sample Entropy,and Lempel-Ziv Complexity,and an increase in Fatigue Index.The average duration and frequency of EEG microstate C both significantly decreased,and the proportion of time for microstate D decreased,while the average correlation coefficient between microstates A and C increased.Conclusion A decrease was induced by radiation in neuronal excitability,which may affect cognitive brain networks and brain attention.This study can provide reference for the study of radiation damage to the Central Nervous System(brain).