1.The technique and development of total skin electron irradiation-Taiwan experiences
Jiaming WU ; Shian YE ; Yimin REN
Chinese Journal of Radiation Oncology 2015;(4):449-453
Objective The aim of this study is to present two novel technique?Lying on position and rotational board TSEI in which uniform dose to the whole body as well as the soles and vertex of scalp can be achieved in one electron beam treatment fraction. Methods Patients are treated with two groups in prone and supine position by leaning on inner rotational board in prone and supine position, each group can further be separated into two subgroup with tilting and rotation positions for treatment. By incorporating all these setting on the aswirl board with the optimal gantry angle, the patient will final accumulate compensated dosages on whole body surface. Results The dose uniformity for the rotational board?TSET or Lying on position could be control within ±10%. Conclusions The two TSEItechnique?Lying on and Rotational board TSEI techniques presented in this study is able to deliver a uniform dose to the patient’s skin surface as well as to the vertex and the soles all in one time, eliminating the troubles of having to further boost fields for these two regions when using the Stanford Six Field Technique.
2. Prevalence of calf muscle cramps and influencing factors for pregnant women in China during 2010-2012
Yifan DUAN ; Jie WANG ; Shan JIANG ; Ye BI ; Xuehong PANG ; Shian YIN ; Zhenyu YANG
Chinese Journal of Preventive Medicine 2018;52(1):14-20
Objective:
To investigate the prevalence of calf muscle cramps and possible influencing factors for pregnant women in China.
Methods:
Using a multi-stage stratified probability proportional to size cluster randomization sampling method during 2010-2012. A total of 3 582 pregnant women were investigated at 150 counties from 31 provinces in China mainland. Information on calf muscle cramps, demographic socio-economic status, pregnancy information, and the physical activities was collected through questionnaires. The semi-quantitative food frequency questionnaire (FFQ) was used to collect food intake of pregnant women. Dynamic cluster analysis was used to assess dietary pattern. Multiple logistic regression was used to investigate the possible influencing factors for calf muscle cramps.
Results:
The prevalence of calf muscle cramps was 32.9% (1 180/3 582) in Chinese pregnant women, which was 11.6% (87/748), 28.2% (420/1 492), and 50.2% (673/1 342), respectively, during the first, second and third trimester. There were significant differences between them (χ2=349.16,
3. The influencing factors of anemia for pregnant women between 2010-2012 in China
Shan JIANG ; Xuehong PANG ; Yifan DUAN ; Ye BI ; Jie WANG ; Shian YIN ; Lichen YANG ; Zhenyu YANG
Chinese Journal of Preventive Medicine 2018;52(1):21-25
Objective:
To investigate the prevalence of anemia and related risk factors for pregnant women in China.
Method:
Based on Chinese National Nutrition and Health Surveillance 2010-2012, a total of 3 501 pregnant women were investigated from 150 counties of 31 provinces, municipalities and autonomous regions in China, using a multi-stage stratified cluster randomization sampling method. General information of pregnant women, health status, and food intake during the gestation, was collected through a questionnaire investigation. 6 ml fasting venous blood was collected for the determination of hemoglobin concentration. Data were analyzed using multiple logistic regression to investigate the prevalence of anemia and the related influencing factors.
Results:
The 605 of 3 501 pregnant women had anemia. The prevalence of anemia was 17.2%; and mild anemia accounted for about 61.0% (369/605). Compared with the pregnant women living in the large cities, the
4. Status and related factors for gestational weight gain of Chinese pregnant women during 2010-2012
Ye BI ; Yifan DUAN ; Jie WANG ; Shan JIANG ; Xuehong PANG ; Shian YIN ; Zhenyu YANG ; Jianqiang LAI
Chinese Journal of Preventive Medicine 2018;52(1):26-30
Objective:
To examine the status and related factors for gestational weight gain of Chinese pregnant women at different trimesters in 2010-2012.
Methods:
Participants were from Chinese National Nutrition and Health Surveillance in 2010-2012. Using a multi-stage stratified cluster random sampling method, we recruited 2 805 singleton pregnant women with gestational age 13 weeks or more from 31 provinces of China. A standard questionnaire was used to collect general information and pre-pregnancy weight; body weight and height of pregnant women were measured using a unified weighing scale and stadiometer, dietary intake during the previous year was collected using a food frequency questionnaire. A multiple logistic regression was used to analyze potential factors associated with appropriate gestational weight gain.
Results:
Among 2 805 pregnant women, 1 441 were in the second (13-27 weeks) and 1 364 in the third trimesters (≥28 weeks) . In the 2nd trimester, 229 cases (15.9%), 440 cases (30.5%) and 772 cases (53.6%) were insufficient gestational weight gain, appropriate gestational weight gain and excessive gestational weight gain respectively. So were 256 cases (18.8%), 474 cases (34.8%), 634 cases (46.5%) in the 3rd trimester respectively. In the multivariate unconditional logistic model, less fruit intake was associated with insufficient weight gain for women in the 2nd trimester (