[Analysis on morbidity rate of residents in Qinghai province in 2006]

The purpose of the study was to understand the epidemiological tendency and distribution of the disease across Qinghai province, so as to serve for the development of a scientific system for prevention and treatment.

Multi-stage lamination stochastic group sampling was applied in the study, with 6 counties randomly selected. The total sample size was 19 201 while the study was conducted in the format of indoor visit. For residents younger than 18 years of age, a questionnaire was distributed to them to obtain related basic information. While for those older than 18, an in-depth survey was conducted. In addition to the measurement of height, weight, blood pressure, 10% of the samples underwent a testing on blood sugar. A database was then developed via Epi Data 3.02 and all the data was processed and classified via Foxpro and SPSS 13.0 software.

The overall morbidity rate was 67.76%, with females significantly higher than males. The morbidity rate was fixed at 65.85% after weighted by region. The morbidity rate increased significantly with age. The top 5 diseases identified would include those from digestive system (28.74%), heart cranial vascular (27.27%), rheumatism and bone joint (19.97%), respiratory system (12.46%), biography reproductive system (8.64%) and urinary system (7.39%). Data from by-region analysis showed that the morbidity rate was the highest in pastoral area (70.17%), followed by villages (66.32%) and cities (61.86%), while the kinds of top diseases in those regions were also different. Data from unhealthy lifestyle showed that 22.16% of the provincial population smoked cigarettes, 17.16% drank alcohol, and the rate of obesity was 3.41%.

Significant differences in morbidity rates among different regions and different genders were found while the prevalence rates of disease significantly increased along with age.