BARRIERS TO EFFICIENCY AND THE PRIVATIZATION OF TOWNSHIP-VILLAGE ENTERPRISES

This paper uses Nerlovian type measures to compare the economic performance of private enterprises and Township-Village enterprises during the pre-1994 and post-1994 years, and introduces decomposition measures to help explain their relative performances.Community/Rural/Urban Development,

Whither the roads lead to? estimating association between urbanization and primary healthcare service use with Chinese prefecture-level data in 2014

With the rapid economic development across China over recent decades, examining how urbanization may affect healthcare service use and its implications is more than urgent. This study estimates the association between urbanization and primary healthcare services use in China. We construct a prefecture-level dataset on healthcare services utilization and urbanization. We regress the proportion of residents using healthcare services in primary healthcare centers versus secondary or tertiary hospitals on a set of prefecture-level control variables. Results suggest that use of primary healthcare centers outpatient service is positively associated with being in the proximity of a provincial capital, but negatively correlated with the percentage of the urban population and the availability of public transportation. Higher likelihood of seeking care in major hospitals instead of primary healthcare centers is associated with urbanization, justifying a need for primary care physicians as gatekeepers in China’s healthcare delivery system

Influence of exercise mode on pregnancy outcomes: ENHANCED by Mom project

Background: The extent of the benefits of exercise training during pregnancy on maternal, fetal, and neonatal health outcomes has not been sufficiently addressed. While aerobic exercise training has been determined as safe and efficacious throughout pregnancy, the effects of other training modes on fetal health and development as well as any continued benefits for the neonate, especially with regards to cardiovascular development and function, is largely unknown. In the ENHANCED by Mom study we aim to determine the effects of different modes of exercise training (aerobic, circuit, and resistance) throughout pregnancy on childhood health by controlling individual exercise programs and assessing the effects of each on fetal and neonatal health adaptations. Methods/Design: ENHANCED by mom is a cross sectional comparison study utilizing 3 intervention groups in comparison to a control group. Participants will complete three 5 min warmup + 45 min sessions weekly from 16 weeks to 36 weeks gestation of aerobic, resistance, or circuit training, in comparison to non-exercising controls. Maternal physical measurements will occur every 4 weeks throughout the intervention period. Fetal morphometric and heart measurements will occur at 34 weeks gestation. Neonatal measurements will be acquired at birth and at 1 month, 6 months, and 12 months. Discussion: A better understanding on the effects of exercise training during pregnancy on fetal and neonatal health could have a profound impact on the prevention and development of chronic diseases such as obesity, hypertension, and diabetes

Modeling the probability distribution of positional errors incurred by residential address geocoding

BACKGROUND: The assignment of a point-level geocode to subjects' residences is an important data assimilation component of many geographic public health studies. Often, these assignments are made by a method known as automated geocoding, which attempts to match each subject's address to an address-ranged street segment georeferenced within a streetline database and then interpolate the position of the address along that segment. Unfortunately, this process results in positional errors. Our study sought to model the probability distribution of positional errors associated with automated geocoding and E911 geocoding. RESULTS: Positional errors were determined for 1423 rural addresses in Carroll County, Iowa as the vector difference between each 100%-matched automated geocode and its true location as determined by orthophoto and parcel information. Errors were also determined for 1449 60%-matched geocodes and 2354 E911 geocodes. Huge (> 15 km) outliers occurred among the 60%-matched geocoding errors; outliers occurred for the other two types of geocoding errors also but were much smaller. E911 geocoding was more accurate (median error length = 44 m) than 100%-matched automated geocoding (median error length = 168 m). The empirical distributions of positional errors associated with 100%-matched automated geocoding and E911 geocoding exhibited a distinctive Greek-cross shape and had many other interesting features that were not capable of being fitted adequately by a single bivariate normal or t distribution. However, mixtures of t distributions with two or three components fit the errors very well. CONCLUSION: Mixtures of bivariate t distributions with few components appear to be flexible enough to fit many positional error datasets associated with geocoding, yet parsimonious enough to be feasible for nascent applications of measurement-error methodology to spatial epidemiology

Predictors of Engagement in a Parenting Intervention Designed to Prevent Child Maltreatment

Objective: The objectives of this analysis were to: 1) assess the impact of sociodemographic factors, and perceived costs and benefits on engagement in a parenting program designed to prevent child maltreatment, 2) determine if perceived costs and benefits mediated the association between sociodemographic factors and engagement, and 3) assess whether or not race/ethnicity moderated the relationship between sociodemographic factors, perceived costs and benefits, and engagement.Methods: Perceived costs and benefits of the intervention were assessed from parents providing self-reports, including satisfaction/ usefulness of the program (benefits), and time/difficulty associated with the program (costs). Engagement was defined as attendance at both the mid-point and then the number of visits attended throughout the remainder of the intervention. To investigate the direct and indirect effects (through perceived costs and benefits) of parental sociodemographic factors (education, age, gender, number of children, household income) on program engagement, data were analyzed with structural equation modeling (SEM). To assess the potential moderating effect of race/ethnicity, separate models were tested for White and African-American parents.Results: Perceived benefits positively impacted attendance for both White (n=227) and African-American (n=141) parents, whereas perceived costs negatively influenced attendance only for White parents. Parent education and age directly impacted attendance for White parents, but no sociodemographic factor directly impacted attendance for African-American parents. The indirect impact of sociodemographic characteristics on attendance through perceived costs and perceived benefits differed by race/ethnicity.Conclusions: Results suggest that White parents participate in a parenting program designed to prevent child maltreatment differently based upon their perceived benefits and costs of the program, and based on benefits only for African-American parents. Parental perception of costs and/or benefits of a program may threaten the effectiveness of interventions to prevent child maltreatment for certain racial/ethnic groups, as it keeps them from fully engaging in empirically validated programs. Different methods may be required to retain participation in violence prevention programs depending upon race/ethnicity