Bayesian modeling of spatially differentiated multivariate enamel defects of the children's primary maxillary central incisor teeth.

BACKGROUND: The analysis of dental caries has been a major focus of recent work on modeling dental defect data. While a dental caries focus is of major importance in dental research, the examination of developmental defects which could also contribute at an early stage of dental caries formation, is also of potential interest. This paper proposes a set of methods which address the appearance of different combinations of defects across different tooth regions. In our modeling we assess the linkages between tooth region development and both the type of defect and associations with etiological predictors of the defects which could be influential at different times during the tooth crown development. METHODS: We develop different hierarchical model formulations under the Bayesian paradigm to assess exposures during primary central incisor (PMCI) tooth development and PMCI defects. We evaluate the Bayesian hierarchical models under various simulation scenarios to compare their performance with both simulated dental defect data and real data from a motivating application. RESULTS: The proposed model provides inference on identifying a subset of etiological predictors of an individual defect accounting for the correlation between tooth regions and on identifying a subset of etiological predictors for the joint effect of defects. Furthermore, the model provides inference on the correlation between the regions of the teeth as well as between the joint effect of the developmental enamel defects and dental caries. Simulation results show that the proposed model consistently yields steady inferences in identifying etiological biomarkers associated with the outcome of localized developmental enamel defects and dental caries under varying simulation scenarios as deemed by small mean square error (MSE) when comparing the simulation results to real application results. CONCLUSION: We evaluate the proposed model under varying simulation scenarios to develop a model for multivariate dental defects and dental caries assuming a flexible covariance structure that can handle regional and joint effects. The proposed model shed new light on methods for capturing inclusive predictors in different multivariate joint models under the same covariance structure and provides a natural extension to a nested hierarchical model.

Use of Goal Attainment Scaling to Measure Educational and Rehabilitation Improvements in Children with Multiple Disabilities.

With a focus on children with multiple disabilities (CMD), the purpose of this quality improvement project was to elevate educational measurement and practices involving CMD. Using the goal attainment scaling (GAS) methodology, this project was conducted within a public charter school, Pattison's Academy for Comprehensive Education (PACE), focusing on 31 CMD and measuring student improvement and program effectiveness. For 2010-2011 and 2011-2012, improvements were demonstrated for the majority of CMD by meeting or exceeding their goals. Goal attainment scaling was able to capture improvement in educational and rehabilitation goals in the majority of CMD. Goal attainment scaling can provide an indication of a program's effectiveness. The use of GAS in CMD has potential to maximize participation across the school setting where all children in the United States commonly develop and learn skills as well as find meaning.

Staged vs Complete Repair in Tetralogy of Fallot With Pulmonary Atresia.

BACKGROUND: We sought to compare outcomes for infants with tetralogy of Fallot with pulmonary atresia (TOF/PA) and confluent pulmonary arteries who underwent staged or primary complete surgical repair. METHODS: This retrospective study included infants undergoing initial surgical intervention between 0 and 60 days of age with TOF/PA without aortopulmonary collaterals from 2009 to 2018 at 20 centers. The primary outcome was days alive and out of the hospital in the first year of life (DAOH365). Secondary outcomes were mortality at 1 year of age and a composite major complication outcome. Multivariable modeling with generalized estimating equations were used to compare outcomes between groups. RESULTS: Of 221 subjects, 142 underwent staged repair and 79 underwent primary complete repair. There was no significant difference in median DAOH365 between the staged and primary repair groups (317 days [interquartile range, 278-336] vs 338 days [interquartile range, 314-348], respectively; adjusted P = .13). Nine staged repair patients (7%) died in the first year of life vs 5 primary repair patients (6%; adjusted odds ratio, 1.00; 95% CI, 0.25-3.95). At least 1 major complication occurred in 37% of patients who underwent staged repair vs 41% of patients who underwent primary complete repair (P = .75), largely driven by the need for unplanned cardiac reinterventions. CONCLUSIONS: For infants with TOF/PA with confluent pulmonary arteries, a surgical strategy of staged or primary complete repair resulted in statistically similar DAOH365, early mortality, and morbidity.

P068 Racial and Socioeconomic Disparities in Acute Care Utilization in a National Cohort of Veterans With IBD.

BACKGROUND: Hospitalizations for Black patients with inflammatory bowel disease (IBD) have increased in recent decades though our understanding of disease behavior in Black patients remains limited and concerns related to healthcare equity persist. Existing data are largely drawn from small case series at IBD referral centers or national registries lacking granular longitudinal outpatient data. Our aim was to determine whether there are racial or socioeconomic disparities in acute care utilization as measured by hospitalizations and emergency department (ED) visits within a large national cohort of IBD patients. METHODS: National Veterans Heath Administration (VHA) data were used to examine baseline disease characteristics and two years of utilization following an index outpatient gastroenterology visit for Crohn's disease (CD) or ulcerative colitis (UC) in 2017. To account for patients more likely to access care outside the VHA, we excluded those with less than four unique VHA encounters per year. We compared differences in comorbidity burden [Charlson comorbidity index, (CCI)], disease duration, surgical history and modifiable IBD severity risk factors (opioid use, tobacco use, biologic agent use, anemia, malnutrition) based on race and area deprivation index (ADI), a multidimensional marker for regional socioeconomic status (SES). Negative binomial regression was used to model demographic and clinical risk factors associated with hospitalization and ED visits. RESULTS: 19,442 patients (47.4% with CD and 52.6% with UC) were included: 14% Black, 5% Hispanic and 76% White. Compared to White patients, Black patients were younger, more likely to have anemia, perianal disease, and be in the bottom quartile of ADI; they were less likely to have a history of intestinal resection. IBD type, disease duration, CCI, and rates of tobacco use, opioid use, and malnutrition were not different between Black and White patients. On bivariate analysis, Black patients had increased mean and median ED visits compared to White patients (mean 4.48 vs 3.32; p < 0.001) though no differences were seen in hospitalizations (mean 0.96 vs 0.92; p=NS). On stepwise multivariable modeling, hospitalization and ED utilization were significantly higher among Black patients when controlling for age, sex, type of IBD, and disease duration [OR for hospitalization: 1.114 (95% CI: 1.046-1.199); OR for ED visit: 1.191 (95% CI: 1.125-1.261)]. After sequential adjustment for CCI and modifiable IBD severity risk factors, no differences in hospitalizations were seen between Black and White patients. In the full model for ED visits including adjustments for modifiable IBD severity risk factors (all significant), Black race was significantly associated with increased frequency of ED access [OR: 1.261 (95% CI: 1.19-1.336)], while ADI was not. CONCLUSION: In this analysis of a large national outpatient cohort of patients with IBD, we identified significant racial differences in IBD disease behavior, anemia and subsequent acute care utilization. Racial differences in hospitalization were not significant after controlling for modifiable IBD risk factors suggesting actionable targets to mitigate the observed disparities. However, Black race was independently associated with ED utilization even in a healthcare system where access to care is theoretically similar. Future studies should investigate factors underlying increased ED utilization among Black IBD patients in further detail.