Tag: nevin manimala

Invest Ophthalmol Vis Sci. 2023 Apr 3;64(4):4. doi: 10.1167/iovs.64.4.4.

ABSTRACT

PURPOSE: This study aimed to assess the prevalence and characteristics of the peripapillary gamma zone in myopic, emmetropic, and hyperopic eyes of Chinese children.

METHODS: Overall, 1274 children aged 6 to 8 years from the Hong Kong Children Eye Study underwent ocular examinations, including measurements of cycloplegic auto-refraction and axial length (AL). The optic disc was imaged using a Spectralis optical coherence tomography (OCT) unit and a protocol involving 24 equally spaced radial B-scans. The Bruch’s membrane opening (BMO) was identified in over 48 meridians in each eye. The peripapillary gamma zone was defined as the region between the BMO and the border of the optic disc, identified by the OCT.

RESULTS: The prevalence of the peripapillary gamma zone was higher in myopic eyes (36.3%) than in emmetropic (16.1%) and hyperopic eyes (11.5%, P < 0.001). AL (per 1 mm; odds ratio [OR]) = 1.861, P < 0.001) and a more oval disc shape (OR = 3.144, P < 0.001) were associated with the presence of a peripapillary gamma zone after adjusting for demographic, systemic, and ocular variables. In the subgroup analysis, a longer AL was associated with the presence of a peripapillary gamma zone in myopic eyes (OR = 1.874, P < 0.001), but not in emmetropic (OR = 1.033, P = 0.913) or hyperopic eyes (OR = 1.044, P = 0.883). A peripapillary zone was not observed in the region nasal to the optic nerve in myopic eyes, in contrast to its presence in the same region in 1.9% of emmetropic eyes and 9.3% of hyperopic eyes; these intergroup differences were statistically significant (P < 0.001).

CONCLUSIONS: Although peripapillary gamma zones were observed in the eyes of both myopic and non-myopic children, their characteristics and distribution patterns were substantially different.

PMID:37022704 | DOI:10.1167/iovs.64.4.4

JAMA Netw Open. 2023 Apr 3;6(4):e235841. doi: 10.1001/jamanetworkopen.2023.5841.

ABSTRACT

IMPORTANCE: A better understanding of the psychosocial health of resettled child and adolescent refugees and associated premigration and postmigration factors may help this population integrate effectively.

OBJECTIVE: To estimate the associations of premigration and postmigration multidomain factors with psychosocial health after resettlement among young refugees of different ages.

DESIGN, SETTING, AND PARTICIPANTS: This cross-sectional study used wave 3 data from the Building a New Life in Australia (BNLA) cohort study, as they represented the first time a BNLA study included a child module targeting children and adolescents in the migrating unit as a nested component of the broader study. The study population consisted of children aged 5 to 10 years and adolescents aged 11 to 17 years. The caregivers of the children, the adolescents themselves, and the adolescents’ caregivers were invited to complete the child module. Wave 3 data were collected from October 1, 2015, to February 29, 2016. Statistical analysis was performed from May 10 to September 21, 2022.

EXPOSURES: Premigration and postmigration multidomain factors, including individual (child and caregiver), family, school, and community levels, were measured.

MAIN OUTCOMES AND MEASURES: Social and emotional adjustment and posttraumatic stress disorder (PTSD) were the dependent variables measured by the Strengths and Difficulties Questionnaire (SDQ) and an 8-item PTSD scale. Weighted multilevel linear or logistic regression models were used.

RESULTS: Of the 220 children aged 5 to 10 years (mean [SD] age, 7.4 [2.0] years), 117 (53.2%) were boys; of the 412 adolescents aged 11 to 17 years (mean [SD] age, 14.1 [2.0] years), 215 (52.2%) were boys. Among the children, compared with no exposure, exposure to premigration traumatic events (β = 2.68 [95% CI, 0.51-4.85]) and having family conflicts after resettlement (β = 6.30 [95% CI, 2.97-9.64]) were positively associated with SDQ total difficulties score; school achievement was negatively associated with SDQ total difficulties score (β = -5.02 [95% CI, -9.17 to -0.87]). Among the adolescents, being treated unfairly (β = 3.32 [95% CI, 1.41-5.22]) and parenting harshness after resettlement (β = 0.25 [95% CI, 0.11-0.40]) were positively associated with SDQ total difficulties score; engagement in extracurricular activities (β = -3.67 [95% CI, -6.83 to -0.50]) was negatively associated with SDQ total difficulties score. Exposure to premigration traumatic events (adjusted odds ratio [aOR], 2.49 [95% CI, 1.10-5.63]), being treated unfairly (aOR, 3.77 [95% CI, 1.60-8.91]), and facing English language barriers (aOR, 6.41 [95% CI, 1.98-20.79]) after resettlement were positively associated with the presence of PTSD.

CONCLUSIONS AND RELEVANCE: In this study of refugee children and adolescents, apart from premigration traumatic experiences, several postmigration family- and school-related factors and social integration factors were associated with psychosocial health after resettlement. The findings suggest that family- and school-centered psychosocial care and social integration programs targeting related stressors merit increased attention for improving the psychosocial health of refugee children and adolescents after resettlement.

PMID:37022686 | DOI:10.1001/jamanetworkopen.2023.5841

JAMA Netw Open. 2023 Apr 3;6(4):e235870. doi: 10.1001/jamanetworkopen.2023.5870.

ABSTRACT

IMPORTANCE: International Classification of Diseases-coded hospital discharge data do not accurately reflect whether firearm injuries were caused by assault, unintentional injury, self-harm, legal intervention, or were of undetermined intent. Applying natural language processing (NLP) and machine learning (ML) techniques to electronic health record (EHR) narrative text could be associated with improved accuracy of firearm injury intent data.

OBJECTIVE: To assess the accuracy with which an ML model identified firearm injury intent.

DESIGN, SETTING, AND PARTICIPANTS: A cross-sectional retrospective EHR review was conducted at 3 level I trauma centers, 2 from health care institutions in Boston, Massachusetts, and 1 from Seattle, Washington, between January 1, 2000, and December 31, 2019; data analysis was performed from January 18, 2021, to August 22, 2022. A total of 1915 incident cases of firearm injury in patients presenting to emergency departments at the model development institution and 769 from the external validation institution with a firearm injury code assigned according to International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) or International Statistical Classification of Diseases and Related Health Problems, 10th Revision, Clinical Modification (ICD-10-CM), in discharge data were included.

EXPOSURES: Classification of firearm injury intent.

MAIN OUTCOMES AND MEASURES: Intent classification accuracy by the NLP model was compared with ICD codes assigned by medical record coders in discharge data. The NLP model extracted intent-relevant features from narrative text that were then used by a gradient-boosting classifier to determine the intent of each firearm injury. Classification accuracy was evaluated against intent assigned by the research team. The model was further validated using an external data set.

RESULTS: The NLP model was evaluated in 381 patients presenting with firearm injury at the model development site (mean [SD] age, 39.2 [13.0] years; 348 [91.3%] men) and 304 patients at the external development site (mean [SD] age, 31.8 [14.8] years; 263 [86.5%] men). The model proved more accurate than medical record coders in assigning intent to firearm injuries at the model development site (accident F-score, 0.78 vs 0.40; assault F-score, 0.90 vs 0.78). The model maintained this improvement on an external validation set from a second institution (accident F-score, 0.64 vs 0.58; assault F-score, 0.88 vs 0.81). While the model showed some degradation between institutions, retraining the model using data from the second institution further improved performance on that site’s records (accident F-score, 0.75; assault F-score, 0.92).

CONCLUSIONS AND RELEVANCE: The findings of this study suggest that NLP ML can be used to improve the accuracy of firearm injury intent classification compared with ICD-coded discharge data, particularly for cases of accident and assault intents (the most prevalent and commonly misclassified intent types). Future research could refine this model using larger and more diverse data sets.

PMID:37022685 | DOI:10.1001/jamanetworkopen.2023.5870

JAMA Netw Open. 2023 Apr 3;6(4):e236795. doi: 10.1001/jamanetworkopen.2023.6795.

ABSTRACT

IMPORTANCE: Understanding the posttreatment prognosis of skin lesions in patients with psoriasis is essential for improving patients’ treatment satisfaction.

OBJECTIVES: To model the prognosis of skin lesions for patients with psoriasis after 3 types of therapy.

DESIGN, SETTING, AND PARTICIPANTS: This prospective cohort study included patients with psoriasis who visited a dermatologist and were enrolled in the platform of the Psoriasis Standardized Diagnosis and Treatment Center in China from August 2020 to December 2021.

INTERVENTIONS: Biologic, traditional, and systemic therapy for psoriasis.

MAIN OUTCOMES AND MEASURES: Skin lesions were measured by the Investigator’s Global Assessment (IGA) scale subsumed into 4 stages of severity (IGA 0/1, IGA 2, IGA 3, and IGA 4), with higher scores indicating higher severity. The matching method was used to balance baseline covariates between patients receiving each of the 3 treatments. Transition probabilities from IGA scores at baseline to 0 to 1 month and 1 to 12 months were estimated.

RESULTS: A total of 8767 patients were included in the final analysis (median age, 38.6 years [IQR, 28.7-52.8 years]; 5809 [66.3%] male). Across the 3 therapies, as the follow-up duration increased, the probability of improvement transition into a less severe IGA stage (from IGA 4 to IGA 0/1) increased from 0.19 (95% CI, 0.18-0.21) in 0 to 1 month to 0.36 (95% CI, 0.34-0.37) in 1 to 12 months. Biologic therapy was associated with greater improvement transitions for severe conditions, with transition probabilities from IGA 4 to IGA 0/1 increasing by 0.06 (95% CI, 0.02-0.09) vs traditional therapy and by 0.06 (95% CI, 0.03-0.09) vs systemic therapy in 0 to 1 month and by 0.08 (95% CI, 0.04-0.12) vs traditional therapy and 0.11 (95% CI, 0.07-0.14) vs systemic therapy in 1 to 12 months.

CONCLUSIONS AND RELEVANCE: This cohort study modeling psoriasis prognosis provided a complete prognosis of skin lesions, and biologic therapy was associated with improved prognosis of moderate to severe psoriasis compared with traditional and systemic therapies. The study provides insight on using transition diagrams to assess psoriasis prognosis and to communicate with patients in clinical practice.

PMID:37022681 | DOI:10.1001/jamanetworkopen.2023.6795

JAMA Netw Open. 2023 Apr 3;6(4):e237004. doi: 10.1001/jamanetworkopen.2023.7004.

ABSTRACT

IMPORTANCE: Type 2 diabetes (T2D) is associated with the progression of cognitive dysfunction. Physical activity benefits cognition, but no evidence from randomized clinical trials has shown whether tai chi chuan has better long-term benefits than fitness walking in cognitive function for patients with T2D and mild cognitive impairment (MCI).

OBJECTIVE: To compare the effectiveness of tai chi chuan, a mind-body exercise, for improving cognitive function in older adults with T2D and MCI, with fitness walking.

DESIGN, SETTING, AND PARTICIPANTS: This randomized clinical trial was conducted between June 1, 2020, and February 28, 2022, at 4 sites in China. Participants included 328 adults (aged ≥60 years) with a clinical diagnosis of T2D and MCI.

INTERVENTIONS: Participants were randomized in a 1:1:1 ratio to a tai chi chuan group, a fitness walking group, or a control group. The tai chi chuan group received 24-form simplified tai chi chuan. The fitness walking group received fitness walking training. Both exercise groups took the training for 60 min/session, 3 times/wk, for 24 weeks in a supervised setting. All 3 groups were provided with a 30-minute diabetes self-management education session, once every 4 weeks for 24 weeks. The participants were followed up for 36 weeks.

MAIN OUTCOMES AND MEASURES: The primary outcome was the global cognitive function measured at 36 weeks by the Montreal Cognitive Assessment (MoCA). Secondary outcomes included MoCA at 24 weeks and other cognitive subdomain measures and blood metabolic indices at 24 and 36 weeks.

RESULTS: A total of 328 participants (mean [SD] age, 67.55 [5.02] years; mean [SD] T2D duration, 10.48 [6.81] years; 167 [50.9%] women) were randomized to the tai chi chuan group (n = 107), fitness walking group (n = 110), or control group (n = 111) and included in the intention-to-treat analysis. At 36 weeks, the tai chi chuan group showed improved MoCA scores compared with the fitness walking group (mean [SD], 24.67 [2.72] vs 23.84 [3.17]; between-group mean difference, 0.84 [95% CI, 0.02-1.66]; P = .046) in the intention-to-treat analysis. The per-protocol analysis data set and subgroup analysis at 36 weeks showed similar results. Based on the generalized linear models, the treatment effects were similar in each group after adjusting for self-reported dietary calories and physical activity. There were 37 nonserious adverse events (tai chi chuan group, 8; fitness walking group, 13; control group, 16) unrelated to the study with no statistically significant difference among the 3 groups (P = .26).

CONCLUSIONS AND RELEVANCE: In this randomized clinical trial including older adults with T2D and MCI, tai chi chuan was more effective than fitness walking in improving global cognitive function. The findings support a long-term benefit, suggesting the potential clinical use of tai chi chuan as an exercise intervention to improve cognitive function for older adults with T2D and MCI.

TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT04416841.

PMID:37022680 | DOI:10.1001/jamanetworkopen.2023.7004

Ann Biomed Eng. 2023 Apr 6. doi: 10.1007/s10439-023-03185-2. Online ahead of print.

ABSTRACT

In vivo skin exhibits viscoelastic, hyper-elastic and non-linear characteristics. It is under a constant state of non-equibiaxial tension in its natural configuration and is reinforced with oriented collagen fibers, which gives rise to anisotropic behaviour. Understanding the complex mechanical behaviour of skin has relevance across many sectors including pharmaceuticals, cosmetics and surgery. However, there is a dearth of quality data characterizing the anisotropy of human skin in vivo. The data available in the literature is usually confined to limited population groups and/or limited angular resolution. Here, we used the speed of elastic waves travelling through the skin to obtain measurements from 78 volunteers ranging in age from 3 to 93 years old. Using a Bayesian framework allowed us to analyse the effect that age, gender and level of skin tension have on the skin anisotropy and stiffness. First, we propose a new measurement of anisotropy based on the eccentricity of angular data and conclude that it is a more robust measurement when compared to the classic “anisotropic ratio”. Our analysis then concluded that in vivo skin anisotropy increases logarithmically with age, while the skin stiffness increases linearly along the direction of Langer Lines. We also concluded that the gender does not significantly affect the level of skin anisotropy, but it does affect the overall stiffness, with males having stiffer skin on average. Finally, we found that the level of skin tension significantly affects both the anisotropy and stiffness measurements employed here. This indicates that elastic wave measurements may have promising applications in the determination of in vivo skin tension. In contrast to earlier studies, these results represent a comprehensive assessment of the variation of skin anisotropy with age and gender using a sizeable dataset and robust modern statistical analysis. This data has implications for the planning of surgical procedures and questions the adoption of universal cosmetic surgery practices for very young or elderly patients.

PMID:37022652 | DOI:10.1007/s10439-023-03185-2

Int J Health Econ Manag. 2023 Apr 6. doi: 10.1007/s10754-023-09353-0. Online ahead of print.

ABSTRACT

The studies on the demand for healthcare in low- and middle-income countries rarely take into consideration the fact that many people spend their income on self-treatment and professional treatment. The estimation of the income elasticity of demand for self-treatment and professional treatment can show a more precise picture of the affordability of professional care. This paper contributes to the discussion around estimates of income elasticity of health spending and discussion whether professional care and self-treatment are close to a luxury good and inferior good respectively in a middle-income country. We apply the switching regression model to explain the choice between self-treatment and professional healthcare via estimates of the income elasticity. Estimates are made with the use of the Russian Longitudinal Monitoring Survey – Higher School of Economics (RLMS-HSE), a nationally representative survey. While individual expenditure on professional treatment is higher than that on self-treatment, our estimates show that expenses on professional treatment can be income inelastic except when spending on medicines prescribed by a physician that are elastic. The results also indicate that cost of self-treatment is income elastic. In all cases, the considered income elasticities are statistically insignificant between professional and self-treatment.

PMID:37022649 | DOI:10.1007/s10754-023-09353-0

Phys Eng Sci Med. 2023 Apr 6. doi: 10.1007/s13246-023-01246-3. Online ahead of print.

ABSTRACT

Validation of small field dosimetry is crucial for stereotactic radiosurgery (SRS) and stereotactic body radiotherapy (SBRT). Accurate and considered measurement of linear accelerator dose must be compared to precise and accurate calculation by the treatment planning system (TPS). Monte Carlo calculated distributions contain statistical noise, reducing the reliance that should be given to single voxel doses. The average dose to a small volume of interest (VOI) can minimise the influence of noise, but for small fields introduces significant volume averaging. Similar challenges present during measurement of composite dose from clinical plans when a small volume ionisation chamber is used. This study derived correction factors for VOI averaged TPS doses calculated for small fields, allowing correction to an isocentre dose following account for statistical noise. These factors were used to determine an optimal VOI to represent small volume ionisation chambers during patient specific quality assurance (PSQA). A retrospective comparison of 82 SRS and 28 SBRT PSQA measurements to TPS calculated doses from varying VOI was completed to evaluate the determined volumes. Small field commissioning correction factors of under 5% were obtained for field sizes of 8 mm and larger. Optimal spherical VOI with radius between 1.5 and 1.8 mm and 2.5 to 2.9 mm were determined for IBA CC01 and CC04 ionisation chambers respectively. Review of PSQA confirmed an optimal agreement between CC01 measured doses and a volume of 1.5 to 1.8 mm while CC04 measured doses showed no variation with VOI.

PMID:37022612 | DOI:10.1007/s13246-023-01246-3

Minerva Pediatr (Torino). 2023 Apr 6. doi: 10.23736/S2724-5276.22.07112-9. Online ahead of print.

ABSTRACT

INTRODUCTION: Tailored implementation interventions are required to overcome the diagnostic research-practice gap for cerebral palsy (CP). Evaluating the impact of interventions on patient outcomes is a priority. This review aimed to summarize the established evidence for the effectiveness of guideline implementations in lowering the age of CP diagnosis.

EVIDENCE ACQUISITION: A systematic review was conducted according to PRISMA. CINAHL, Embase, PubMed and MEDLINE were searched (2017-October 2022). Inclusion criteria were studies that evaluated effect of CP guideline interventions on health professional behaviour or patient outcomes. GRADE was used to determine quality. Studies were coded for use of theory (Theory Coding Scheme). Meta-analysis was performed and a standardized metric used to summarize statistics of intervention effect estimates.

EVIDENCE SYNTHESIS: Of (N.=249) records screened, (N.=7) studies met inclusion, comprising interventions following infants less than 2 years of age with CP risk factors (N.=6280). Guideline feasibility in clinical practice was established through health professional adherence and patient satisfaction. Efficacy of patient outcome of CP diagnosis by 12 months of age was established in all studies. Weighted averages were: (1) high-risk of CP (N.=2) 4.2 months and (2) CP diagnosis (N.=5) at 11.6 months. Meta-analysis of (N.=2) studies found a large, pooled effect size Z = 3.00 (P=0.003) favoring implementation interventions lowering age of diagnosis by 7.50 months, however study heterogeneity was high. A paucity of theoretical frameworks were identified in this review.

CONCLUSIONS: Multifaceted interventions to implement the early diagnosis of CP guideline are effective in improving patient outcomes by lowering the age of CP diagnosis in high-risk infant follow-up clinics. Further targeted health professional interventions including low-risk infant populations are warranted.

PMID:37021615 | DOI:10.23736/S2724-5276.22.07112-9

Thorac Cancer. 2023 Apr 6. doi: 10.1111/1759-7714.14867. Online ahead of print.

ABSTRACT

OBJECTIVE: Whether cycle number influences the subsequent pathological or surgical outcomes remained unclear. This study aimed to assess the efficacy and surgical safety of neoadjuvant immunochemotherapy-based treatment in the real-world setting.

METHODS: Clinical data of patients who received neoadjuvant immunochemotherapy for non-small-cell lung cancer between 2018 and 2021 were collected. Oncological outcomes such as objective response rate (ORR), major pathological response (MPR), and pathological complete response (pCR), and surgical outcomes including operating time, intraoperative bleeding, postoperative drainage, and hospital stay were analyzed.

RESULTS: In total, 176 patients were included, among whom 102 cases were lung squamous carcinoma (LUSQ). After immunochemotherapy, 98 (56%) of patients achieved ORR. Notably, the ORR (63% vs. 46%, p = 0.039) and pCR (45% vs. 27%, p = 0.022) were significantly higher in patients with LUSQ. For patients who received two, three, four, and five or more cycles, the ORRs were 52%, 67%, 53%, and 50% (p = 0.36). In post hoc analysis, cycle numbers showed no significant association with MPR or pCR (p = 0.14 and p = 0.073). Treatment cycles showed no influence on operating time, postoperative drainage, and hospital stay (p = 0.79, 0.37, and 0.22). Notably, the blood loss index of patients who received more than four cycles was higher than those receiving four or fewer cycles (mean blood loss: two or fewer cycles 153.1, three cycles 113.8, four cycles 137.6, and five or more cycles 293.3, respectively).

CONCLUSIONS: This study indicated that cycles of neoadjuvant immunochemotherapy had no significant effect on the feasibility and safety of surgery. Although not statistically significant, patients who received five or more cycles of treatment experienced higher intraoperative blood loss.

PMID:37021595 | DOI:10.1111/1759-7714.14867