ABSTRACT
ObjectiveTo explore the correlation of sleep quality with negative life events and coping styles in adolescents based on structural equation modeling， and to provide references for improving the adolescents' sleep quality. MethodsFrom December 2021 to May 2022， a total of 767 junior middle school students from three schools in Chongqing were enrolled， and assessed using Pittsburgh Sleep Quality Index （PSQI）， Adolescent Self-rating Life Events Checklist （ASLEC） and Simplified Coping Style Questionnaire （SCSQ）. Then the structural equation model was applied to discuss the correlation of sleep quality with negative life events and coping styles in adolescents. ResultsA total of 222 adolescents （28.94%） were found to have sleep disorders. PSQI score was positively correlated with ASLEC score and negative coping dimension score of SCSQ （r=0.612， 0.590， P<0.01）， and negatively correlated with positive coping dimension score of SCSQ （r=-0.435， P<0.01）. The structural equation model of the relationship between negative life events， coping styles and sleep quality denoted that negative life events exhibited both direct and indirect positive effects on sleep quality （β=0.448， 0.322， P<0.05）， positive coping style had direct negative effects on sleep quality （β=-0.368， P<0.05）， and negative coping style had direct positive effects on sleep quality （β=0.442， P<0.05）. ConclusionNegative life events and negative coping style cause adverse effects on adolescents' sleep quality， while positive coping style exerts positive effects on adolescents' sleep quality.
ABSTRACT
Objective To compare a novel mirror-overlap method with the traditional manual measurement and the subjective assessment in assessing breast symmetry after oncoplastic surgery.Methods 59 patients with breast cancer who underwent conservation/reconstruction surgery were recruited.The post-operative assessment for breast symmetry was conducted using manual measurement,subjective assessment by the patient,their family member and a nurse,and the mirror-overlap method respectively.The latter method involved using the Photoshop to assess the area differences in breast outlines and shadows created by a flashlight when bilateral images were overlapped in the axis of midline.Results The distance differences between bilateral breasts measured using manual method were negatively correlated with symmetric coefficients in the mirror-overlap method (P＜0.05).There was a positive correlation between the average scores in the subjective assessment and symmetric coefficients of mirror-overlap method (P＜0.05).Conclusion The mirror-overlap method is an easy,feasible and cheap method which collects 3D breast information and provides an effective approach to assess breast symmetry after oncoplastic surgery.