Objective: To investigate the relationships between behavioral problems and family environment in obese children aged 6-15 years to provide a dereference for the analysis of behavioral problems among obese children and the construction of their family environmet . Methods: Family environment dimensions and behavioral problems were investigated among 2 376 obese children and 2 376 non-obese children with Family Environment Scale Symptoms Questionnaire and Achenbach Child Behavior Checklist. Data were analyzed by SPSS 17.0. Results: The incidence of the behavioral problems in obese children (21.12%) was higher than that of non-obese children (15.53%)(χ2=24.93，P<0.01).The scores of Family Environment Scale Symptoms Questionnaire differed between obese children and nonobese children (Z=-2.44, -2.98, -3.38, P<0.05). Binary logistic regression results showed that for obese boys and girls aged 6 to 11 years, high maternal education levels(OR=0.78, 95%CI=0.69-0.88), family cohesion(OR=0.75, 95%CI=0.67-0.84) and less family conflicts(OR=0.81, 95%CI=0.75-0.87) were related to less behavioral problems; for obese boys and girls aged 12 to 15 years, family cohesion(OR=0.79, 95%CI=0.70-0.90) and less family conflicts(OR=0.78, 95%CI=0.71-0.86) were related to less behavioral problems. Conclusion Family cohesion and less family conflicts might help low the risk of behavioral problems among obese children. The role of family environment on behavioral problems should not be neglected in future mental health promotion and social work service for obese children.

Objective To explore the relationships between advanced puberty timing and frequencies of problem behaviors using two different indexes of pubertal development as cut-off standards. Methods A total of 3003 primary school girls aged 6~11 in Beijing were recruited in the study. Parent-assessed Tanner staging according to the menarche and pubic hair development level and the Achenbach Child Behavior Checklist were applied. Results When timing of menarche and pubic hair development stage were used as reference, the detection rate of girls with advanced puberty timing was 11.2% (337/3003) and 3.4% (101/3003), respectively. The scores of withdrawal problem (Z=-2.23, P=0.03) and physical problem (Z=-2.64, P=0.01) were higher in the advanced menarche group than in the moderate group. The scores of withdrawal behavior problem were higher in the advanced pubic hair development group than in the moderate group (X2=2.53, P=0.03). Scores of social problem (X2=2.71, P=0.02), aggression problem (X2=2.50, P=0.04), total score of problem behavior (X2=2.64, P=0.03) were also higher in the advanced pubic hair development group than in the delayed group. The correlation between the pubertal timing results based on the two different cut-off standards was not significant (r=0.04, P=0.06). Conclusion T he detection rate of girls with advanced puberty timing are different using the two different cut-off standards. The prominent problem behaviors in the advanced group are also different. Compared with girls with advanced menarche, girls with advanced pubic hair development may have more prominent problem behaviors than those with moderate development.

Objective To explore the clinical application value of core needle biopsy guided by fully digital mammography three-dimensional positioning system in the diagnosis of breast lesions.Methods A retrospective analysis of 21 patients who underwent guided core needle biopsy in a fully digital mammography system was performed.2 1 patients had 2 1 lesions,which included mass (4 cases),suspected calcification (15 cases)and glandular collection (2 cases)based on X-ray examination before biopsy.The needle depth was manually calculated according to the mammogram (0°and 90°),and automatically calculated with the full digital mammography three-dimensional positioning system. The needle depth was adjusted according to the combination of above two values with the patient’s skin elasticity and gland structure. After putting a small incision into the needle with local anesthesia,X-ray radiography was taken to observe the position of the puncture needle, and then the puncture gun was excited to take out the tissue at different positions of the lesion.Finally,X-ray radiography of the tissue was performed.Results 21 patients underwent biopsy with the average operation time of 45 minutes and puncture time of 25 minutes.The needle depth adjustment range was 3－5 mm,using 14G puncture needle and 4－8 pieces of tissue were pierced according to the lesions. X-ray radiographywas performed on the removed tissue strips. For all the cases of suspected calcification,the calcified lesions were found in the removed tissue strips.No serious adverse reactions occurred in 21 patients with lateral position (1 9 cases)and sitting position (2 cases).2 patients with sitting position developed dizziness, nausea,and palpitation,and recovered quickly after rest and psychological comfort.Puncture pathology confirmed 6 cases of breast cancer (1 case of intraductal papillary carcinoma,2 cases of ductal carcinoma in situ,3 cases of invasive breast cancer),and 1 5 cases of benign lesions,with no obvious changes after one year follow-up.Conclusion In the core needle biopsy guided by the fully digital mammography three-dimensional positioning system for breast lesions,the patient should be placed in the lateral position, which can effectively reduce the occurrence of adverse reactions.A 14G puncture needle and ≥4 tissue strips can achieve a higher pos-itive rate.The technology is simple and easy to perform with a high puncture accuracy,and has important application value.

Objective: To explore the mediating effect of the childbirth self-efficacy between mindfulness level and fear of childbirth in pregnant women. Methods: A total of 285 pregnant women were measured with five facet mindfulness questionnaire(FFMQ), childbirth attitude questionnaire(FOC), and the short form of the Chinese childbirth self-efficacy inventory(CBSEI-C32). Results: The scores of mindfulness level, fear of childbirth, outcome expectancy and self-efficacy expectancy were(127.51±11.12), (31.44±8.84), (109.36±30.52)and(110.02±30.03), respectively.Pearson correlation analysis showed that mindfulness level was positively correlated with outcome expectancy and self-efficacy expectancy(r=0.247, r=0.235, both P<0.01), while negatively correlated with fear of childbirth(r=-0.274, P<0.01). Outcome expectancy and self-efficacy expectancy were negatively correlated with fear of childbirth(r=-0.251, r=-0.233, both P<0.01). The mediating effect of outcome expectancy and self-efficacy expectancy between mindfulness level and fear of childbirth was significant(P<0.01), and the mediating effect sizes were 17.8% and 15.6%, respectively. Conclusion Childbirth self-efficacy partly mediates mindfulness level and fear of childbirth in pregnant women.