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Background: Cerebral pulsatility is thought to reflect arterial stiffness and downstream microvascular resistance. Although previous studies indicated cerebral pulsatility might closely relate to development of cerebral small vessel disease (SVD), yet evidence remain controversial and longitudinal data are rare. Objective: We aimed to explore relationships of cerebral pulsatility with severity and progression of various SVD imaging markers among the community-dwelling elderly. Design: A longitudinal cohort study. Methods: As part of the prospective community-based Shanghai Aging Study cohort, dementia- and stroke-free elderly were recruited for baseline assessment of cerebral pulsatility and SVD severity during 2010–2011 and traced for SVD progression during 2016–2017. Cerebral pulsatility was quantified for both anterior and posterior circulation with transcranial Doppler ultrasound. SVD imaging markers were measured with brain magnetic resonance imaging (MRI) including white matter hyperintensities (WMHs), enlarged perivascular spaces (ePVS), lacunes, and microbleeds. The cross-sectional and longitudinal relationships between cerebral pulsatility and SVD were analyzed by univariable and multivariable regression models. Results: Totally, 188 eligible subjects were included at baseline and out of them, 100 (53.19%) returned for a 7-year follow-up. At baseline, increased pulsatility of posterior circulation was independently associated with more periventricular WMH (PWMH) and ePVS in basal ganglia (BG-ePVS) but not with other SVD markers. Longitudinally, higher posterior pulsatility predicted greater PWMH progression in participants with hypertension (β = 2.694, standard error [SE] = 1.112, p = 0.020), whereas pulsatility of anterior circulation was shown to prevent BG-ePVS progression among followed-up elderly (β = −6.737, SE = 2.685, p = 0.012). However, no significant relationship was found between cerebral pulsatility and burden of lacunes or cerebral microbleeds. Conclusion: Higher pulsatility of posterior circulation could worsen PWMH progression, especially for participants with hypertension. But for development of ePVS, increased cerebral pulsatility could play a compensatory role among several healthy elderly. The distinct relationships between cerebral pulsatility and various SVD markers emphasized the importance of individualized SVD management. [ABSTRACT FROM AUTHOR]

With widespread internet and social media use among youngsters, cyberbullying has emerged as a novel form of bullying. According to the routine activity and lifestyle theories, cyberbullying and victimization overlap significantly. However, the nature and mechanism of the overlap is not yet adequately understood. This study contributes to extant literature by investigating the role of network structure in cyberbullying-victimization overlap. Participants included 520 residential students from a single department of a Chinese university. This study applied prevalent, bivariate, and social network approach to investigate the overlap. Linear regressions with interactive terms are applied to investigate the moderating effect of network structure. First, the results revealed that the overlap phenomenon is robust against different approaches. Second, the findings demonstrated that indegree significantly moderates the effect of victimization on the perpetration of cyberbullying. Third, for betweenness and closeness, neither direct effect nor moderating effect, is statistically significant. Overall, cyberbullying-victimization overlaps among surveyed Chinese university students and social network may moderate the relationship between cyberbullying and victimization. [ABSTRACT FROM AUTHOR]

This study examined the temporal variations in calls for service before, during, and after the COVID-19 pandemic lockdown in China using a sample of 37,124 police service calls made from January 1, 2019, to December 31, 2020 to a 110 command center in a county-level city in Hubei Province. There was a significant temporal effect, and the calls for service peaked between 08:00 and 19:59 throughout the entire period. The busiest hours of the day for calls for police service were between 12:00 and 19:59, and the calls peaked between 12:00 and 15:59 during the lockdown. The distribution of calls by weekday showed no significant pattern, with the exception of traffic-related calls. The results are discussed from the perspective of routine activity theory. [ABSTRACT FROM AUTHOR]

Previous studies have established a link between prior victimization and subsequent victimization, although research in the context of fraud victimization, particularly among older adults, remains limited. To address this research gap, this study examines data from the China Health and Retirement Longitudinal Study, a national survey of older Chinese adults, to explore the occurrence of re-victimization in fraud and the influence of routine activities on re-victimization. The findings of this study are threefold. First, a higher number of previous fraud victimizations significantly increases the likelihood of experiencing subsequent fraud exposure and loss. Second, the diversity and frequency of routine activities have a significant impact on fraud exposure and mitigate the effect of prior victimization on subsequent fraud loss. Third, both leisure and non-leisure routine activities contribute positively to fraud exposure, but the moderating effect is observed only in the case of leisure activities, instead of non-leisure activities. This research underscores the importance of considering the relationship between previous victimization and subsequent victimization in the context of fraud, specifically among older adults. These findings contribute to the understanding of re-victimization dynamics and offer insights for developing targeted prevention strategies to reduce fraud victimization among older adults. [ABSTRACT FROM AUTHOR]

Analysts of discrete data often face the challenge of managing the tendency of inflation on certain values. When treated improperly, such phenomenon may lead to biased estimates and incorrect inferences. This study extends the existing literature on single-value inflated models and develops a general framework to handle variables with more than one inflated value. To assess the performance of the proposed maximum likelihood estimator, we conducted Monte Carlo experiments under several scenarios for different levels of inflated probabilities under multinomial, ordinal, Poisson, and zero-truncated Poisson outcomes with covariates. We found that ignoring the inflations leads to substantial bias and poor inference of the inflations—not only for the intercept(s) of the inflated categories but other coefficients as well. Specifically, higher values of inflated probabilities are associated with larger biases. By contrast, the generalized inflated discrete models (GIDMs) perform well with unbiased estimates and satisfactory coverages even when the number of parameters that need to be estimated is quite large. We showed that model fit criteria, such as Akaike information criterion, could be used in selecting the appropriate specifications of inflated models. Lastly, the GIDM was implemented using large-scale health survey data as a comparison to conventional modeling approaches such as various Poisson and Ordered Logit models. We showed that the GIDM fits the data better in general. The current work provides a practical approach to analyze multimodal data that exists in many fields, such as heaping in self-reported behavioral outcomes, inflated categories of indifference and neutral in attitude surveys, large amounts of zero, and low occurrences of delinquent behaviors. [ABSTRACT FROM AUTHOR]

The mechanisms through which conflicting parental relationship and parenting practices influence adolescent antisocial behavior have not been adequately understood. To bring more understanding to the mechanisms, this study investigates how marital discord interrelates with interparental inconsistency in parenting practices, and how these family conditions influence juvenile delinquency through their spillover effects on mental health problems, parental attachment and delinquent peer association among Chinese adolescents. Findings obtained from a structural equation modeling analysis of survey data collected from a probability sample of 2,496 adolescents (mean age = 15.16 years) are generally consistent with the spillover effect hypothesis. The results demonstrate that mental health problems, parental attachment, and delinquent peer association operate as critical mediators linking marital discord and interparental inconsistency to juvenile delinquency. [ABSTRACT FROM AUTHOR]

Prior research has identified discrimination as a cause of delinquency among migrant children. Few studies, however, have examined how discrimination is related to delinquency. The current research aims at bringing more understanding to this issue. Based on the general strain theory, this study posits that discrimination facilitates delinquent behavior because it reduces social support, generates negative emotions, and erodes social bonds. To test these hypotheses, this study collected survey data from a probability sample of 1,300 migrant children who attended secondary schools in one of the largest cities in China. Structural equation modeling analysis was conducted to test the direct and indirect effects of discrimination on delinquency. The results show that perceived discrimination reported by the students was positively related to delinquency through all three mediating mechanisms. This study suggests that strengthening social support may provide an effective strategy to reduce delinquency among migrant children in a short and intermediate term while ending discrimination represents a more long-term solution. [ABSTRACT FROM AUTHOR]