Objective:To establish and validate a new model of health belief model(HBM) combined with theory of planned behavior(TPB).Methods:Path analysis was applied to set up a new model predicting iron-fortified soy sauce consumption behavior using baseline survey data among women in rural and urban areas in Beijing,and the model was validated in follow-up survey.Results:It was proved that health values had powerful direct effect on behavior identity and had relatively strong direct effect on attitudes towards behavior;behavior identity had strong effect on behavior barriers,mostly in a direct way,and on behavior intention in a direct or indirect way;control belief was an important external factor influencing behavior intention;behavior intention was the most direct and most important one of factors influencing actual behavior;and convenience to buy was an important external factor influencing actual beha-vior.Conclusion:The integrated model of TPB and HBM explains behavior better and may be attempted in other similar researches.

Endovascular interventional therapy can signifantly improve the clinical outcomes in patients with acute ischemic stroke.It has become the important therapeutic means and research focus for acute ischemic stroke.However,there are many factors affecting its efficacy.This article reviews the factors affecting the treatment effect of endovascular interventional therapy of acute ischemic stroke.

Objective: To test the reliability and validity of a questionnaire on knowledge, beliefs and intentions about AIDS/safe sex for university students. Methods: Based on the data investigated with this questionnaire from 598 university students and the test-retest data from 63 university students, the internal consistency, test-retest reliability and construct validity were calculated. Results: This questionnaire had good reliability, with most parts having Cronbach ? coefficients large than 0.7 and retest coefficients large than 0.6. The factor structure was consistent with the theoretical hypothesis and the factors could explain 58.85% of the whole questionnaire.Conclusion:This questionnaire can be applied among university students to assess AIDS/safer sex related knowledge, beliefs and behavioral intentions.

Objective: To identify variables that significantly predict the intention of NaFeEDTA fortified soy sauce (FeSS) consumption and to develop feasible intervention strategies.Methods: Stratified sampling and random sampling were adopted together.636 women from rural areas and 454 from urban areas completed eligible questionnaires.Theory of Planned Behavior (TPB) and Health Belief Model (HBM) were adopted to design the constructive questionnaire.Path analysis was used to construct the model of intentions to buy FeSS.Results: The model explained 35%(the rural model, RM)or 55%(the urban model, UM) of the variance of behavioral intention.FeSS knowledge directly and indirectly affected the intention to buy FeSS ( the total effect on the intention, 0.151 in RM, 0.368 in UM).And the behavioral intention was also impacted by women's health value and cognition on perceived susceptibility and perceived severity of iron deficiency anemia(IDA) through the behavior identity(0.176 in RM, 0.354 in UM) and attitudes towards behavior(0.161 in RM, 0.091 in UM).Cues, as an external factor, much affected the intention (0.372 in RM, 0.337 in UM).The external control belief was a rather weak factor affecting intention (0.086 in RM, 0.108 in UM).Conclusion: Integrated TPB and HBM could explain the behavioral intention of FeSS consumption among women in Guizhou.Nutrition education should emphasize behavioral attitudes and identity, and improve knowledge of FeSS and perception of IDA, which may help to remove worries about FeSS.

ObjectiveTo investigate the clinical value of transvaginal elastography in diagnosing cervical cancers.MethodsTotally,124 patients of cervical lesions with definite pathological results were enrolled.Elastograms were collected and the strain ratios of the benign and malignant lesions were record and compared.ROC curve was used to find the best cut-off point.ResultsElastography was useful in differentiating benign and malignant lesions by different color.Values of strain ratio of different pathological lesions were statistically different ( P ＜0.01).The mean value of strain ratio was 2.71 ± 1.56 for benign lesions and 8.32 ± 4.11 for malignant ones.The best cut-off point was 4.99 basing on the ROC curve.The sensitivity and specificity were 80.7％ and 89.6％,respectively.ConclusionsReal-time transvaginal elastography was a new way in differential diagnosing cervical cancers from benign lesions of the cervix.

Objective To evaluate Alberta stroke programme early CT score on diffusion-weighted imaging (DWI-ASPECTS)and clot burden score on MR angiography (MRA-CBS)in predicting hemorrhagic transformation(HT) in acute anterior circulation cerebral infarction after thrombolysis in diffusion-weighted imaging Alberta stroke program.Methods A total of 37 consecutive patients with acute anterior circulation cerebral infarction were treated with thrombolysis.The clinical information , score of DWI-ASPECTS before thrombolysis , score of MRA-CBS before thrombolysis and images of enhanced gradient echo T 2*-weighted angiographywithin ( ESWAN) 24 hours before and after thrombolysis were all collected.The interval between onset and the two MRI scans were recorded respectively.We identified HT according to the images of ESWAN scanned after thrombolysis , and divided patients into 2 groups:with HT(14 cases) and without HT (23 cases).Differences of clinical data and imaging indicators between the two groups were compared by using Fisher′s exact test and Wilcoxon rank sum test.Logistic regression analysis was performed by taking HT as the dependent variable , and the scores of NIHSS , DWI-ASPECTS and MRA-CBS at admission were taken as independent variables.The variables which were statistically significant in logistic regression analysis were enrolled in receiver operating characteristic analysis.Results In HT group, the scores of NIHSS, DWI-ASPECTS and MRA-CBS were 15.00 ±5.30, 6.00(4.75,7.00) and 7.00(0.75,8.50) respectively.In the other group without HT, these scores were 7.00 ±4.80, 9.00(8.00,10.00)and 10.00(6.00,10.00) respectively.Compared with patients without HT , patients with HT had a higher baseline NIHSS score ( Z=-3.72,P<0.01), a lower DWI-ASPECTS (Z=-4.13,P<0.01) and a lower MRA-CBS (Z=-2.00, P<0.05).Logistic regression analysis showed that the scores of DWI-ASPECTS ( OR 0.42,95%CI 0.21-0.87,P <0.05 ) and NIHSS ( OR 1.22, 95%CI 1.00-1.48, P <0.05 ) at baseline predicted HT development independently.Receiver operating characteristic analysis showed that the optimal cut -off point of DWI-ASPECTS to predict the development of HT was≤7.Its sensitivity, specificity and area under ROC curve were 92.9%, 78.3% and 0.902 respectively ( P<0.01 ).Conclusions ASPECTS on DWI is of great value in predicting HT after thrombolysis in acute cerebral infarction.CBS on MRA can provide additional information for predicting HT.

Objective:To explore the value of HDlive Flow in prenatal diagnosis of the velamentous placenta.Methods:A total of 2 723 pregnant women underwent prenatal ultrasonography in the second trimester and delivered at Zhejiang Provincial People's Hospital from January 2019 to January 2020, and 48 of them were diagnosed as having velamentous placenta confirmed by postpartum clinical and pathological examination and were included in this retrospective analysis. Two-dimensional echocardiography-color Doppler flow imaging (2D-CDFI) and HDlive Flow were both performed during the prenatal ultrasound examination. The sonographic features of velamentous placenta by HDlive Flow were summarized and the prenatal detection rate between two methods were compared using Chi-square test. Results:The incidence of velamentous placenta was 1.8% (48/2 723) in our hospital. Out of the 48 enrolled cases, 45 were diagnosed by HDlive Flow with a detection rate of 93.8% (45/48), three of them were complicated by vasa previa; the other three cases were misdiagnosed as battledore placenta. There were 38 cases diagnosed by 2D-CDFI with a detection rate of 79.2% (38/48), which was lower than HDlive Flow ( χ2=4.360, P=0.037); the other ten cases were misdiagnosed as battledore placenta. The sonographic features by HDlive Flow were as follow: (1) Umbilical cord attached to fetal membranes outside the placenta in 41 cases with the umbilical vessels distributing along the fetal membrane in a mesh pattern; (2) In three cases, the umbilical cord insertion was located on fetal membranes at the edge of placenta; (3) One case was shown that umbilical cord and the branches of umbilical vessels were inserted into the placenta in a "λ" shape. Conclusions:The anatomy of the umbilical cord, umbilical blood vessels and placenta can be directly shown under HDlive Flow, which can improve the prenatal detection rate of the velamentous placenta.

Objective To investigate the relationship between the lifestyle actual-ideal self-discrepancy and the self-regulatory fatigue.Methods A sample of 434 healthy undergraduate students were recruited from September to October 2015.They were inquired the demographic information questionnaire,the lifestyle actual-ideal self-discrepancy of Chinese Adolescent Lifestyles Scale(CALS) and the Self-Regulatory Fatigue Scale (SRF-S).Results The scores of lifestyle actual-ideal self-discrepancy in study habits ranked the highest(1.00(0.60,1.40)),followed by physical exercise(0.86(0.43,1.29)),sleep status(0.80(0.40,1.00)),diet (0.75 (0.50,1.25)),recreational activities (0.63 (0.00,1.00)),coping style (0.50 (0.25,0.75)),interpersonal relationship (0.46(0.17,0.67)) and health habits(0.25(0.00,0.50)).Furthermore,the scores of actual-ideal self-discrepancy in interpersonal relationship,study habits,sleep,physical exercise,coping style and diet were positively correlated with the scores of self-regulatory fatigue (r=0.22,0.19,0.19,0.16,0.13,0.12,P＜0.05).There was no relationship between the scores of actual-ideal self-discrepancy and the scores of self-regulatory fatigue in health habits and recreational activities(r=0.31,0.04).Conclusion The actual-ideal self-discrepancy in interpersonal relationship,study habits,physical exercise,coping style,sleep and diet were positively correlated with the self-regulatory fatigue.The reduction in these lifestyle actual-ideal self-discrepancy may help college students ease their self-adjustment fatigue.

Objective:To explore the relationship between lifestyle,self-esteem and life satisfaction among Chinese adolescents.Methods:10 899 adolescents in middle schools and colleges from 9 provinces in China were investigated by using Chinese Adolescent Lifestyle Scale(CALS),Rosenberg Self-Esteem Scale(SES).Results:The distribution of adolescents in the four groups divided by lifestyle and life satisfaction scores were different regarding the area and grade of these students(?2=248.93,P

Objective To investigate the lifestyles of internet addiction disorders and explore the relationship between lifestyles and internet addiction among Chinese adolescents.Methods In this cross-sectional stratified cluster sampling study,Demographic Information Questionnaire,Chinese Adolescent Lifestyles Scale (CALS)and Young's Internet Addiction Test were applied.Results (1) Adolescents with internet addiction were 275,accounting for 11.20％.Boys(15.45％) addicted the internet more than girls(7.48％).The prevalence rate of IAD was higher in students from urban(13.55％) than that in students from rural area(9.67％).The ratio of IAD was the highest in junior school students (14.01％),the second in university students (13.84％),the third in senior high school students(9.66％),and the lowest in primary school students(7.67％) (P＜0.01).(2) The internet addicts scored significantly lower on sleep,study habits,physical exercise,interpersonal relationship and coping style,compared to the normal group(P＜0.01).(3) Sleep status,study habits,physical exercise,interpersonal relationship and coping style were negatively correlated with internet addiction (r=-0.193,r=-0.319,r=-0.175,r=-0.225,r=-0.105,P＜0.01).(4)Multiple logistic regression analysis indicated learning habits and interpersonal relationship had negative predictive effects on internet addiction; whereas,the coping style showed a weak positive prediction effect on Internet addiction.Conclusion Internet addict teenagers have poor lifestyles which should be suggested to start the good behavior habit and insist on a healthy lifestyle to prevent the internet addiction disorder.