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71.
Jordan W. Swanson Allyn Auslander Heather Wipfli Thi-Hai-Duc Nguyen Kristin Hatcher Richard Vanderburg William P. MageeIII 《World journal of surgery》2017,41(6):1435-1446
Background
Most people who lack adequate access to surgical care reside in low- and lower–middle-income countries. Few studies have analyzed the barriers that determine the ability to access surgical treatment. We seek to determine which barriers prevent access to cleft care in a resource-limited country to potentially enable barrier mitigation and improve surgical program design.Methods
A cross-sectional, multi-site study of families accessing care for cleft lip and palate deformities was performed in Vietnam. A survey instrument containing validated demographic, healthcare service accessibility, and medical/surgical components was administered. The main patient outcome of interest was receipt of initial surgical treatment prior to 18 months of age.Results
Among 453 subjects enrolled in the study, 216 (48%) accessed surgical care prior to 18 months of age. In adjusted regression models, education status of the patient’s father (OR 1.64; 95% CI 1.1–2.5) and male sex (OR 1.61; 95% CI 1.1–2.4) were both associated with timely access to care. Distance and associated cost of travel, to either the nearest district hospital or to the cleft surgical mission site, were not associated with timing of access. In a sensitivity analysis considering care received prior to 24 months of age, cost to attend the surgical mission was additionally associated with timely access to care.Conclusions
Half of the Vietnamese children in our cohort were not able to access timely surgical cleft care. Barriers to accessing care appear to be socioeconomic as much as geographical or financial. This has implications for policies aimed at reaching vulnerable patients earlier.72.
This study examined the use and helpfulness of coping strategies and patterns among parents of children with traumatic brain injury (TBI). Participants were 122 Arab-Israeli, Jewish-Israeli, and Palestinian parents of 65 children with TBI following their discharge from pediatric rehabilitation hospital. Family-focused strategies were highly prevalent and most helpful among both mothers and fathers. Jewish mothers reported that support coping pattern (but not medical or family) was more helpful than did Arab-Israeli and Palestinian mothers. The findings highlight the need to promote effective coping among mothers of children with TBI with low levels of income and education and underscore the need for continuous long-term professional support to parents of children with TBI after hospital discharge. 相似文献
73.
Hsuehmin Li Karen Watanabe David Auslander Robert C. Spear 《Annals of biomedical engineering》1994,22(1):97-111
We developed three algorithms to facilitate an analysis of the parameter combinations (PASS points) that fit experimental
data to a desired degree of accuracy. The clustering algorithm separates PASS points into clusters (PASS clusters) as a preliminary
step for the following geometrical parametric analyses. The PASS region reconstruction algorithm defines the space of a PASS
cluster to allow further parametric structural analysis. The feasible parameter space expansion algorithm produces a complete
PASS cluster to be used for model predictions to evaluate the effects of variability and uncertainty. These algorithms are
demonstrated using two pharmacokinetic models; a single compartment model for procainamide and a three-compartment physiologically
based model for benzene. We found a more thorough representation of the parameter space than previously considered. Thus,
we obtained model predictions that describe better the variability in population responses. In addition, we also parametrically
identified a subpopulation that may have a higher risk for cancer. 相似文献
74.
75.
Jennifer M. Threlfall Wendy Auslander Donald Gerke Hollee McGinnis Sarah Myers Tlapek 《School mental health》2017,9(2):194-204
This study investigated the association between mental health problems and academic and behavioral school functioning for adolescent girls in the child welfare system and determined whether school engagement and future orientation meditated the relationship. Participants were 231 girls aged between 12 and 19 who had been involved with the child welfare system. Results indicated that 39% of girls reported depressive symptoms in the clinical range and 54% reported posttraumatic symptoms in the clinical range. The most common school functioning problems reported were failing a class (41%) and physical fights with other students (35%). Participants reported a mean number of 1.7 school functioning problems. Higher levels of depression and PTSD were significantly associated with more school functioning problems. School engagement fully mediated the relationship between depression and school functioning and between PTSD and school functioning, both models controlling for age, race, and placement stability. Future orientation was not significantly associated with school functioning problems at the bivariate level. Findings suggest that school engagement is a potentially modifiable target for interventions aiming to ameliorate the negative influence of mental health problems on school functioning for adolescent girls with histories of abuse or neglect. 相似文献
76.
TL Economopoulos PA Asvestas GK Matsopoulos K Gr?ndahl H-G Gr?ndahl 《Dento maxillo facial radiology》2010,39(5):300-313
Contrast correction is often required in digital subtraction radiography when comparing medical data acquired over different time periods owing to dissimilarities in the acquisition process. This paper focuses on dental radiographs and introduces a novel approach for correcting the contrast in dental image pairs.The proposed method modifies the subject images by applying typical registration techniques on their histograms. The proposed histogram registration method reshapes the histograms of the two subject images in such a way that these images are matched in terms of their contrast deviation. The method was extensively tested over 4 sets of dental images, consisting of 72 registered dental image pairs with unknown contrast differences as well as 20 dental pairs with known contrast differences. The proposed method was directly compared against the well-known histogram-based contrast correction method.The two methods were qualitatively and quantitatively evaluated for all 92 available dental image pairs. The two methods were compared in terms of the contrast root mean square difference between the reference image and the corrected image in each case. The obtained results were also verified statistically using appropriate t-tests in each set.The proposed method exhibited superior performance compared with the well-established method, in terms of the contrast root mean square difference between the reference and the corrected images. After suitable statistical analysis, it was deduced that the performance advantage of the proposed approach was statistically significant. 相似文献
77.
78.
79.
Transforming growth factor beta selectively inhibits normal and leukemic human bone marrow cell growth in vitro 总被引:12,自引:1,他引:12
The effects of transforming growth factor beta 1 or beta 2 (TGF-beta 1 or -beta 2) on the in vitro proliferation and differentiation of normal and malignant human hematopoietic cells were studied. Both forms of TGF- beta suppressed both the normal cellular proliferation and colony formation induced by recombinant human interleukin-3 (IL-3) and granulocyte-macrophage colony-stimulating factor (GM-CSF). In the presence of GM-CSF or IL-3, optimal concentrations of TGF-beta (400 pmol/L) inhibited colony formation by erythroid (BFU-E), multipotential (CFU-GEMM), and granulocyte-macrophage (CFU-GM) progenitor cells by 90% to 100%, whereas granulocyte or monocyte cluster formation was not inhibited. In contrast, neither form of TGF-beta had any effect on G- CSF-induced hematopoiesis. The suppressive action appeared to be mediated directly by TGF-beta since antiproliferative responses were also observed in accessory cell-depleted bone marrow cells. In contrast to normal bone marrow cells, both GM- and G-CSF-induced proliferation of cells from patients with chronic myelogenous leukemia were suppressed in a dose-dependent manner by TGF-beta. Differential effects of TGF-beta on the proliferation of established leukemic lines were also observed since most cell lines of myelomonocytic nature studied were strongly inhibited where erythroid cell lines were either insensitive or poorly inhibited by TGF-beta. These results suggest that TGF-beta is an important modulator of human hematopoiesis that selectively regulates the growth of less mature hematopoietic cell populations with a high proliferative capacity as opposed to more differentiated cells, which are not affected by TGF-beta. 相似文献
80.
Charles K Davis Peter J Laud Zsanett Bahor GK Rajanikant Arshad Majid 《Journal of cerebral blood flow and metabolism》2016,36(10):1686-1694
Carnosine is a naturally occurring pleotropic dipeptide which influences multiple deleterious mechanisms that are activated during stroke. Numerous published studies have reported that carnosine has robust efficacy in ischemic stroke models. To further evaluate these data, we have conducted a systematic review and meta-analysis of published studies. We included publications describing in vivo models of ischemic stroke where the neuroprotective efficacy of carnosine was being evaluated through the reporting of infarct volume and/or neurological score as outcomes. Overall efficacy was evaluated using weighted mean difference random effects meta-analysis. We also evaluated for study quality and publication bias. We identified eight publications that met our inclusion criteria describing a total of 29 comparisons and 454 animals. Overall methodological quality of studies was moderate (median = 4/9). Carnosine reduced infarct volume by 29.4% (95% confidence interval (CI), 24.0% to 34.9%; 29 comparisons). A clear dose-response effect was observed, and efficacy was reduced when carnosine was administered more than 6 h after ischemia. Our findings suggest that carnosine administered before or after the onset of ischemia exhibits robust efficacy in experimental ischemic stroke. However, the methodological quality of some of the studies was low and testing occurred only in healthy young male animals. 相似文献