1.Predictive modle for violence risk in hospitalized schizophrenia patients based on support vector machine
Huan LIU ; Peifang SHI ; Kun ZHANG ; Li KANG ; Yan ZHANG ; Long NA ; Binhong WANG ; Meiqing HE
Sichuan Mental Health 2026;39(1):27-35
BackgroundThe violent aggressive behaviors of patients with schizophrenia usually have the characteristics of suddenness, unpredictability, high severity, and great difficulty in prevention. Early identification and accurate assessment of their risk of violent aggression have significant clinical significance. ObjectiveTo construct a predictive model for the violence risk in hospitalized patients with schizophrenia, to identify the key factors influencing the occurrence of violent behavior in these patients, so as to provide references for clinical precise quantitative assessment and early intervention. MethodsA total of 200 patients with schizophrenia who were hospitalized at Taiyuan Psychiatric Hospital from March 2022 to September 2024 and met the diagnostic criteria of the International Classification of Diseases, eleventh edition (ICD-11) were collected to form the modeling cohort. They were randomly divided into a training set (n=140) and a test set (n=60) at a ratio of 7∶3. Based on the least absolute shrinkage and selection operator (LASSO) regression algorithm, the feature variables were screened and dimension-reduced. The support vector machine (SVM) from machine learning was selected for model training and prediction. The discrimination efficacy of the model was evaluated by the area under the receiver operating characteristic (ROC) curve (AUC), accuracy, precision, sensitivity, specificity, F1 value, and Brier value. ResultsLASSO regression screening identified 16 feature variables. Pearson correlation analysis revealed a positive correlation between prior violent behavior frequency and clinical psychiatric symptom scores (r=0.580, P<0.01), a positive correlation between hospitalization compliance and current disease status (r=0.550, P=0.003), and a positive correlation between educational level and family per capita monthly income (r=0.367, P<0.01). The SVM model achieved an AUC of 0.853, accuracy of 0.800, precision of 0.810, sensitivity of 0.895, specificity of 0.636, F1 value of 0.850, and Brier value of 0.168. ConclusionThe SVM model has a relatively high level of applicability and overall predictive performance in the assessment of violent risk in schizophrenia patients, which is helpful for the early identification of violent risks in such patients. [Funded by Specialized Research Project for Enhancing the Competence of Health Professionals in Taiyuan City (number, Y2023006)]
2.Causal relationship of liposomes and circulating metabolomes to schizophrenia: a two-step, two-sample Mendelian randomization study
Mengyun LEI ; Yanhong DU ; Yao GAO ; Huaili DENG ; Binhong WANG ; Zhiyong REN ; Sha LIU
Sichuan Mental Health 2025;38(3):223-228
BackgroundSchizophrenia is a complex, chronic and severe mental disorder, and the pathogenesis of which has not been fully elucidated. The abnormalities in lipid metabolism and circulating metabolomes have already been implicated in the pathophysiology of schizophrenia. However, available studies have mainly focused on a few liposomes and circulating metabolites, failing to systematically reveal the mediating role of circulating metabolomes in the causal relationship between liposomes and schizophrenia. ObjectiveTo uncover mediating role of circulating metabolomes in the causal relationship between liposomes and schizophrenia, thereby providing biomarkers and potential therapeutic targets for the prevention and treatment of schizophrenia. MethodsData from Genome-Wide Association Studies (GWAS) were analyzed, taking data on 179 liposomes as exposure variables, data on 123 circulating metabolites as intermediate variables, and data on schizophrenia as outcome variable. A two-step, two-sample Mendelian randomization analysis was conducted using the inverse-variance weighted (IVW), MR- Egger, Weighted median, and Weighted mode methods to study the causal relationship of liposomes with schizophrenia and the mediating role of circulating metabolomes in the relationship. ResultsIVW model identified 8 lipids associated with schizophrenia without reverse causality. There were 5 circulating metabolomes strongly associated with schizophrenia. Acetate played a significant mediating role in the causal relationship between phosphatidylinositol (18:0_18:2) and schizophrenia (P=0.023, 95% CI: 0.036~0.532), accounting for 28.4% of the causal relationship. ConclusionThis study demonstrates a causal relationship between liposomes and schizophrenia, with phosphatidylinositol being a risk factor in the progression of schizophrenia, and acetate playing a mediating role in this process. [Fund by National Natural Science Foundation of China General Program (number, 82271546); Shanxi Merit Funding for Overseas Students Sci-Tech Activities Project (number, 20240041); Shanxi Province Science and Technology Innovation Leading Talent Team Project (number, 202304051001049); Shanxi Scientific Research Foundation for the Returned Overseas Chinese Scholars (number, 2022-190); "Six Measures for Health Care Prosperity" Specialized Research Program (number, Y2024008)]
3.Guideline for Adult Weight Management in China
Weiqing WANG ; Qin WAN ; Jianhua MA ; Guang WANG ; Yufan WANG ; Guixia WANG ; Yongquan SHI ; Tingjun YE ; Xiaoguang SHI ; Jian KUANG ; Bo FENG ; Xiuyan FENG ; Guang NING ; Yiming MU ; Hongyu KUANG ; Xiaoping XING ; Chunli PIAO ; Xingbo CHENG ; Zhifeng CHENG ; Yufang BI ; Yan BI ; Wenshan LYU ; Dalong ZHU ; Cuiyan ZHU ; Wei ZHU ; Fei HUA ; Fei XIANG ; Shuang YAN ; Zilin SUN ; Yadong SUN ; Liqin SUN ; Luying SUN ; Li YAN ; Yanbing LI ; Hong LI ; Shu LI ; Ling LI ; Yiming LI ; Chenzhong LI ; Hua YANG ; Jinkui YANG ; Ling YANG ; Ying YANG ; Tao YANG ; Xiao YANG ; Xinhua XIAO ; Dan WU ; Jinsong KUANG ; Lanjie HE ; Wei GU ; Jie SHEN ; Yongfeng SONG ; Qiao ZHANG ; Hong ZHANG ; Yuwei ZHANG ; Junqing ZHANG ; Xianfeng ZHANG ; Miao ZHANG ; Yifei ZHANG ; Yingli LU ; Hong CHEN ; Li CHEN ; Bing CHEN ; Shihong CHEN ; Guiyan CHEN ; Haibing CHEN ; Lei CHEN ; Yanyan CHEN ; Genben CHEN ; Yikun ZHOU ; Xianghai ZHOU ; Qiang ZHOU ; Jiaqiang ZHOU ; Hongting ZHENG ; Zhongyan SHAN ; Jiajun ZHAO ; Dong ZHAO ; Ji HU ; Jiang HU ; Xinguo HOU ; Bimin SHI ; Tianpei HONG ; Mingxia YUAN ; Weibo XIA ; Xuejiang GU ; Yong XU ; Shuguang PANG ; Tianshu GAO ; Zuhua GAO ; Xiaohui GUO ; Hongyi CAO ; Mingfeng CAO ; Xiaopei CAO ; Jing MA ; Bin LU ; Zhen LIANG ; Jun LIANG ; Min LONG ; Yongde PENG ; Jin LU ; Hongyun LU ; Yan LU ; Chunping ZENG ; Binhong WEN ; Xueyong LOU ; Qingbo GUAN ; Lin LIAO ; Xin LIAO ; Ping XIONG ; Yaoming XUE
Chinese Journal of Endocrinology and Metabolism 2025;41(11):891-907
Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.
4.Application progress of digital health intervention in children with asthma
Binhong LUO ; Min QIAN ; Yuying CHEN ; Yingdi WANG
Journal of Clinical Medicine in Practice 2025;29(3):144-148
Asthma is one of the most prevalent chronic respiratory diseases in children.The im-plementation of digital health interventions can enhance self-management abilities in pediatric asthma patients and improve asthma control outcomes.This study summarized the intervention forms of digital health intervention in children with asthma and its application in health education,lung function moni-toring and chemical exposure monitoring,aiming to elaborate the current research status of digital health intervention in children with asthma and provide guidance and reference for the implementation of such intervention measures.
5.Clinical efficacy of Di'ao Xinxuekang Capsules combined with injectable pancreatic kallidinogenase in the treatment of diabetic retinopathy
Zheng SUN ; Xiaoye WANG ; Jing YUAN ; Binhong WEN
Chinese Journal of Primary Medicine and Pharmacy 2025;32(10):1477-1481
Objective:To investigate the clinical efficacy of Di'ao Xinxuekang Capsules combined with injectable pancreatic kallidinogenase in the treatment of diabetic retinopathy. Methods:This study was a prospective research. A total of 90 patients with diabetic retinopathy treated at The People's Hospital of Liaoning Province from September 2021 to March 2024 were included in this study. The patients were randomly assigned to an observation group and a control group, with 45 patients in each group, using the random number table method. The control group received treatment with injectable pancreatic kallidinogenase, while the observation group underwent treatment with Di'ao Xinxuekang Capsules in addition to injectable pancreatic kallidinogenase. Both groups were treated for 14 days. The clinical efficacy, changes in visual acuity after treatment compared with before treatment, ocular hemodynamic indicators (peak systolic velocity and resistance index), and the incidence of adverse reactions were compared between the two groups. Results:The response rate in the observation group was significantly higher than that in the control group [90.91% (40/45) vs. 73.33% (33/45), χ2 = 8.61, P<0.05]. Before treatment, there were no significant differences between the two groups regarding visual acuity values, retinal thickness, and ocular hemodynamic parameters ( t = 0.11, 0.05, 0.47, 1.08, all P>0.05). After 14 days of treatment, the visual acuity in the observation group was significantly higher than that in the control group [(1.06 ± 0.11) vs. (0.81 ± 0.06), t = 12.62, P<0.001]. The peak systolic velocity in the observation group was significantly greater than that in the control group [(31.85 ± 1.92) cm/s vs. (27.01 ± 1.33) cm/s, t = 8.01, P<0.001]. The retinal thickness in the observation group was significantly lower than that in the control group [(311.5 ± 45.2) μm vs. (350.3 ± 59.3) μm, t = -3.49, P<0.001]. The resistance index in the observation group was significantly lower than that in the control group [(0.59 ± 0.02) vs. (0.68 ± 0.04), t = -12.57, P<0.001]. There was no significant difference in the incidence of adverse reactions between the observation and control groups [8.89% (4/45) vs. 6.67% (3/45), χ2 = 0.16, P>0.05]. Conclusions:Di'ao Xinxuekang Capsules combined with injectable pancreatic kallidinogenase for the treatment of diabetic retinopathy can effectively enhance clinical efficacy, improve patients' visual acuity and ocular hemodynamic indicators, and is considered safe.
6.Clinical study on the treatment of type 2 diabetes mellitus complicated by metabolic-associated fatty liver disease using Zhibitai capsules combined with liraglutide
Zheng SUN ; Jing YUAN ; Xiaoye WANG ; Binhong WEN
Chinese Journal of Primary Medicine and Pharmacy 2025;32(11):1667-1672
Objective:To investigate the clinical efficacy of Zhibitai capsules combined with liraglutide in the treatment of type 2 diabetes mellitus (T2MD) complicated by metabolic-associated fatty liver disease (MAFLD). Methods:This study used a prospective design. A total of 92 patients with T2DM complicated by MAFLD who were admitted to The People's Hospital of Liaoning Province from September 2023 to September 2024 were included in this study. They were randomly divided into an observation group and a control group, with 46 patients in each group. Both groups received lifestyle intervention and standard antidiabetic treatment. The control group received subcutaneous injections of liraglutide, while the observation group was treated with liraglutide combined with Zhibitai capsules. All patients were treated for 3 months. Blood glucose levels, glycated hemoglobin, blood lipid levels, liver function, and hemodynamic parameters were compared between the two groups both before and after treatment. The controlled attenuation parameter of liver fat was measured using Fibro Touch. Results:After treatment, there were no statistically significant differences in fasting blood glucose, 2-hour postprandial blood glucose, and glycated hemoglobin levels between the two groups (all P > 0.05). The high-density lipoprotein cholesterol level in the observation group was significantly higher than that in the control group [(1.31 ± 0.40) mmol/L vs. (0.90 ± 0.30) mmol/L, t = -5.56, P < 0.001]. The levels of total cholesterol [(3.70 ± 0.80) mmol/L vs. (4.40 ± 0.90) mmol/L], triglycerides [(1.50 ± 0.40) mmol/L vs. (2.60 ± 0.50) mmol/L], and low-density lipoprotein cholesterol [(1.80 ± 0.50) mmol/L vs. (2.60 ± 0.60) mmol/L] in the observation group were significantly lower than those in the control group ( t = 3.94, 11.65, 6.39, all P < 0.001). The controlled attenuation parameter of liver fat in the observation group was significantly lower than that in the control group [(249.20 ± 7.60) dB/m vs. (264.70 ± 8.70) dB/m, t = 9.10, P < 0.001]. The level of total bilirubin in the observation group was significantly higher than that in the control group [(16.40 ± 1.50) μmol/L vs. (15.00 ± 1.40) μmol/L, t = -4.63, P < 0.05], while the levels of other liver function indicators in the observation group were significantly lower than those in the control group ( t = 4.83, 9.57, 3.66, all P < 0.001). After treatment, whole blood viscosity at high shear rates, whole blood viscosity at lower shear rates, plasma viscosity, and platelet aggregation levels were all significantly lower in the observation group compared with the control group ( t = 2.13, 2.62, 2.97, 6.15, 4.00, all P < 0.05). Conclusions:Zhibitai capsules combined with liraglutide can improve blood glucose levels, lipid profiles, and liver function, while also decreasing blood viscosity in patients with T2MD complicated by MAFLD.
7.Clinical efficacy of Di'ao Xinxuekang Capsules combined with injectable pancreatic kallidinogenase in the treatment of diabetic retinopathy
Zheng SUN ; Xiaoye WANG ; Jing YUAN ; Binhong WEN
Chinese Journal of Primary Medicine and Pharmacy 2025;32(10):1477-1481
Objective:To investigate the clinical efficacy of Di'ao Xinxuekang Capsules combined with injectable pancreatic kallidinogenase in the treatment of diabetic retinopathy. Methods:This study was a prospective research. A total of 90 patients with diabetic retinopathy treated at The People's Hospital of Liaoning Province from September 2021 to March 2024 were included in this study. The patients were randomly assigned to an observation group and a control group, with 45 patients in each group, using the random number table method. The control group received treatment with injectable pancreatic kallidinogenase, while the observation group underwent treatment with Di'ao Xinxuekang Capsules in addition to injectable pancreatic kallidinogenase. Both groups were treated for 14 days. The clinical efficacy, changes in visual acuity after treatment compared with before treatment, ocular hemodynamic indicators (peak systolic velocity and resistance index), and the incidence of adverse reactions were compared between the two groups. Results:The response rate in the observation group was significantly higher than that in the control group [90.91% (40/45) vs. 73.33% (33/45), χ2 = 8.61, P<0.05]. Before treatment, there were no significant differences between the two groups regarding visual acuity values, retinal thickness, and ocular hemodynamic parameters ( t = 0.11, 0.05, 0.47, 1.08, all P>0.05). After 14 days of treatment, the visual acuity in the observation group was significantly higher than that in the control group [(1.06 ± 0.11) vs. (0.81 ± 0.06), t = 12.62, P<0.001]. The peak systolic velocity in the observation group was significantly greater than that in the control group [(31.85 ± 1.92) cm/s vs. (27.01 ± 1.33) cm/s, t = 8.01, P<0.001]. The retinal thickness in the observation group was significantly lower than that in the control group [(311.5 ± 45.2) μm vs. (350.3 ± 59.3) μm, t = -3.49, P<0.001]. The resistance index in the observation group was significantly lower than that in the control group [(0.59 ± 0.02) vs. (0.68 ± 0.04), t = -12.57, P<0.001]. There was no significant difference in the incidence of adverse reactions between the observation and control groups [8.89% (4/45) vs. 6.67% (3/45), χ2 = 0.16, P>0.05]. Conclusions:Di'ao Xinxuekang Capsules combined with injectable pancreatic kallidinogenase for the treatment of diabetic retinopathy can effectively enhance clinical efficacy, improve patients' visual acuity and ocular hemodynamic indicators, and is considered safe.
8.Clinical study on the treatment of type 2 diabetes mellitus complicated by metabolic-associated fatty liver disease using Zhibitai capsules combined with liraglutide
Zheng SUN ; Jing YUAN ; Xiaoye WANG ; Binhong WEN
Chinese Journal of Primary Medicine and Pharmacy 2025;32(11):1667-1672
Objective:To investigate the clinical efficacy of Zhibitai capsules combined with liraglutide in the treatment of type 2 diabetes mellitus (T2MD) complicated by metabolic-associated fatty liver disease (MAFLD). Methods:This study used a prospective design. A total of 92 patients with T2DM complicated by MAFLD who were admitted to The People's Hospital of Liaoning Province from September 2023 to September 2024 were included in this study. They were randomly divided into an observation group and a control group, with 46 patients in each group. Both groups received lifestyle intervention and standard antidiabetic treatment. The control group received subcutaneous injections of liraglutide, while the observation group was treated with liraglutide combined with Zhibitai capsules. All patients were treated for 3 months. Blood glucose levels, glycated hemoglobin, blood lipid levels, liver function, and hemodynamic parameters were compared between the two groups both before and after treatment. The controlled attenuation parameter of liver fat was measured using Fibro Touch. Results:After treatment, there were no statistically significant differences in fasting blood glucose, 2-hour postprandial blood glucose, and glycated hemoglobin levels between the two groups (all P > 0.05). The high-density lipoprotein cholesterol level in the observation group was significantly higher than that in the control group [(1.31 ± 0.40) mmol/L vs. (0.90 ± 0.30) mmol/L, t = -5.56, P < 0.001]. The levels of total cholesterol [(3.70 ± 0.80) mmol/L vs. (4.40 ± 0.90) mmol/L], triglycerides [(1.50 ± 0.40) mmol/L vs. (2.60 ± 0.50) mmol/L], and low-density lipoprotein cholesterol [(1.80 ± 0.50) mmol/L vs. (2.60 ± 0.60) mmol/L] in the observation group were significantly lower than those in the control group ( t = 3.94, 11.65, 6.39, all P < 0.001). The controlled attenuation parameter of liver fat in the observation group was significantly lower than that in the control group [(249.20 ± 7.60) dB/m vs. (264.70 ± 8.70) dB/m, t = 9.10, P < 0.001]. The level of total bilirubin in the observation group was significantly higher than that in the control group [(16.40 ± 1.50) μmol/L vs. (15.00 ± 1.40) μmol/L, t = -4.63, P < 0.05], while the levels of other liver function indicators in the observation group were significantly lower than those in the control group ( t = 4.83, 9.57, 3.66, all P < 0.001). After treatment, whole blood viscosity at high shear rates, whole blood viscosity at lower shear rates, plasma viscosity, and platelet aggregation levels were all significantly lower in the observation group compared with the control group ( t = 2.13, 2.62, 2.97, 6.15, 4.00, all P < 0.05). Conclusions:Zhibitai capsules combined with liraglutide can improve blood glucose levels, lipid profiles, and liver function, while also decreasing blood viscosity in patients with T2MD complicated by MAFLD.
9.Guideline for Adult Weight Management in China
Weiqing WANG ; Qin WAN ; Jianhua MA ; Guang WANG ; Yufan WANG ; Guixia WANG ; Yongquan SHI ; Tingjun YE ; Xiaoguang SHI ; Jian KUANG ; Bo FENG ; Xiuyan FENG ; Guang NING ; Yiming MU ; Hongyu KUANG ; Xiaoping XING ; Chunli PIAO ; Xingbo CHENG ; Zhifeng CHENG ; Yufang BI ; Yan BI ; Wenshan LYU ; Dalong ZHU ; Cuiyan ZHU ; Wei ZHU ; Fei HUA ; Fei XIANG ; Shuang YAN ; Zilin SUN ; Yadong SUN ; Liqin SUN ; Luying SUN ; Li YAN ; Yanbing LI ; Hong LI ; Shu LI ; Ling LI ; Yiming LI ; Chenzhong LI ; Hua YANG ; Jinkui YANG ; Ling YANG ; Ying YANG ; Tao YANG ; Xiao YANG ; Xinhua XIAO ; Dan WU ; Jinsong KUANG ; Lanjie HE ; Wei GU ; Jie SHEN ; Yongfeng SONG ; Qiao ZHANG ; Hong ZHANG ; Yuwei ZHANG ; Junqing ZHANG ; Xianfeng ZHANG ; Miao ZHANG ; Yifei ZHANG ; Yingli LU ; Hong CHEN ; Li CHEN ; Bing CHEN ; Shihong CHEN ; Guiyan CHEN ; Haibing CHEN ; Lei CHEN ; Yanyan CHEN ; Genben CHEN ; Yikun ZHOU ; Xianghai ZHOU ; Qiang ZHOU ; Jiaqiang ZHOU ; Hongting ZHENG ; Zhongyan SHAN ; Jiajun ZHAO ; Dong ZHAO ; Ji HU ; Jiang HU ; Xinguo HOU ; Bimin SHI ; Tianpei HONG ; Mingxia YUAN ; Weibo XIA ; Xuejiang GU ; Yong XU ; Shuguang PANG ; Tianshu GAO ; Zuhua GAO ; Xiaohui GUO ; Hongyi CAO ; Mingfeng CAO ; Xiaopei CAO ; Jing MA ; Bin LU ; Zhen LIANG ; Jun LIANG ; Min LONG ; Yongde PENG ; Jin LU ; Hongyun LU ; Yan LU ; Chunping ZENG ; Binhong WEN ; Xueyong LOU ; Qingbo GUAN ; Lin LIAO ; Xin LIAO ; Ping XIONG ; Yaoming XUE
Chinese Journal of Endocrinology and Metabolism 2025;41(11):891-907
Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.
10.Analysis of the relationship between social activities and depressive symptoms in the elderly based on a cross-lagged model
Yating HOU ; Limei JIANG ; Zhenjie SUN ; Junwei SUN ; Fuxin YAO ; Fude YANG ; Binhong WANG ; Long NA
Chinese Journal of Psychiatry 2024;57(10):646-652
Objective:To explore the causal relationship between social activity and depressive symptoms in the elderly, and to provide a reference for preventing and interventing depressive symptoms in the elderly.Methods:Data were sourced from the China Health and Retirement Longitudinal Study (CHARLS) program, involving 3 164 elderly individuals aged≥60 years with data collected in two measurements, in 2015 (T1) and 2018 (T2). The sample included 1 240 males and 1 924 females aged (71±7) years. Social activities were assessed by constructing a social activity index from the 11 social activities included in the CHARLS questionnaire and the frequency of their activities. The depressive symptoms were assessed using the short version of the Center for Epidemiological Studies Depression Scale (the 10-item Center for Epidemiological Studies Depression Scale, CESD-10). A mixed-design ANOVA was used to explore the trends in social activity and depressive symptoms over time and across genders in the elderly adults. Pearson correlation analysis was used to investigate whether social activity and depressive symptoms in the elderly met the criteria for simultaneous and sequential correlations, followed by a cross-lagged model to analyze the causal temporal or mutual prediction between social activeness and depressive symptoms over a 3-year intervals.Results:The social activity of elderly men at T2 was significantly lower than at T1 ( F=21.00, P<0.001), while no significant difference observed in elderly women ( F=0.31, P<0.001). At both T1 and T2, elderly men scored higher in social activity than elderly women [T1: 2.93±2.98 vs 2.55±2.65,T2: 2.28±2.49 vs 2.24±2.43); F=43.60, 11.24, both P<0.01]. Depressive symptoms at T2 were higher than at T1 for both elderly men and elderly women ((male: 1.90±6.10 vs 21.52±6.08, female: 23.84±6.54 vs 23.07±6.44); F=5.20, 32.77, both P<0.05). Elderly men scored lower than elderly women on depression symptoms at both T1 and T2 (T1: F=45.74, P<0.001; T2: F=69.96, P<0.001). Pearson correlation analysis showed a negative correlation between social activity and depressive symptoms at both measurement points (T1: r=-0.329, P<0.01; T2: r=-0.343, P<0.01), and a positive correlation across T1 and T2 ( r=0.391, 0.573; both P<0.01), meeting the criteria for simultaneous and sequential correlations, and supporting the basic assumptions of cross-lagged design. Cross-lagged analysis revealed that T1 social activity negatively predicted T2 depressive symptoms (β=-0.128, P<0.001), and T1 depressive symptoms negatively predicted T2 social activity (β=-0.202, P<0.001). Conclusion:There is a bidirectional predictive relationship between social activity and depression symptoms in the elderly. Depression symptoms lead to a decrease in social activity, and a decrease in social activity predicts an exacerbation of depression in the elderly.

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