Tag: statistics

Ophthalmic Plast Reconstr Surg. 2021 Jul 21. doi: 10.1097/IOP.0000000000002017. Online ahead of print.

ABSTRACT

PURPOSE: To assess the long-term quality of life outcomes of minimally invasive conjunctivodacryocystorhinostomy with StopLoss Jones tubes.

METHODS: A retrospective interventional case series was performed on all patients diagnosed with proximal bicanalicular obstruction who underwent a minimally invasive conjunctivodacryocystorhinostomy with StopLoss Jones tubes over a period of 5 years from October 2014 to September 2019. The procedure was performed as per standard published protocols of minimally invasive conjunctivodacryocystorhinostomy and StopLoss Jones tubes. Patients were followed for a minimum of 1 year after surgery. The tools employed to study were the “Jones tube satisfaction questionnaire” and the “Nasolacrimal duct obstruction-symptom score.” These tools were employed at every step from the preoperative stage to each of the follow ups. Statistical analysis was performed using the R 4.0.4 (R Project, R Foundation).

RESULTS: A total number of 44 eyes of 42 patients were studied. Of these, 73.81% (31/42) were females. The mean age of patients was 61.81 years. Approximately 87% and 64% of the patients completed 2 and 3 years of follow up, respectively. For up to 2 months postoperative period, the outcomes were excellent, with the majority (76.74%, 33/43) reporting “moderately satisfied” outcomes on Jones tube satisfaction questionnaire. The dissatisfaction began at the 3-month follow up (4.55%, 3/44) and peaked at 6-month follow up (25%, 11/44), owing to tube-related complications. The mean ± standard deviation nasolacrimal duct obstruction-symptom score scores dipped from 19.98 ± 2.88 at baseline to 5.58 ± 2.99 at the 2-month follow up. Similar to Jones tube satisfaction questionnaire, the scores began worsening at 3-month follow up (9.8 ± 5.86) with the poorest scores at 6 months (12.34 ± 5.96), and these changes were significant as compared with the baseline (p < 0.001). The Jones tube satisfaction questionnaire and the nasolacrimal duct obstruction-symptom score scores showed significant improvements at 1-year follow up, owing to appropriate management of complications. The good outcomes were maintained for up to 3 years of postoperative period.

CONCLUSIONS: The long-term quality of life outcome following minimally invasive conjunctivodacryocystorhinostomy with StopLoss Jones tubes was good. The quality of life significantly suffers between 3 and 6 months following the surgery and improves equally well following appropriate management of complications.

PMID:34293792 | DOI:10.1097/IOP.0000000000002017

J Physician Assist Educ. 2021 Jul 21. doi: 10.1097/JPA.0000000000000369. Online ahead of print.

ABSTRACT

PURPOSE: The purpose of this study was to assess how physician assistant (PA) student depression risk, suicidal ideation, and mental health help-seeking behaviors change during didactic training and the relationship between depression risk and demographic factors.

METHODS: Data were obtained through an anonymous online survey sent to didactic students in 7 PA programs during orientation and again at midpoint of the didactic year. Descriptive statistics, independent samples t-testing, and one-way ANOVA analyses were used to assess trends in patient health questionnaire (PHQ-9) scores over the 6-month time period. The PHQ-9 is the module of the PHQ that measures severity of depression risk.

RESULTS: The orientation survey response rate was 82.7% (287/347) and the midpoint survey response rate was 62% (217/350). Analysis revealed that mean PHQ-9 scores increased significantly from 2.49 to 6.42 (p < 0.001) from orientation to midpoint of the didactic year, with 18.9% of students having scores of 10 or greater at midpoint compared to 4.5% at orientation. Thoughts of self-harm and/or suicidal ideation in the past 2 weeks also increased from 3.5% to 7.4% during the same time frame. Additionally, students’ likelihood of seeking mental health help decreased between orientation and midpoint despite the concurrent increases in depression risk and suicidal ideation.

CONCLUSION: Rising PHQ-9 scores indicated an increased risk of major depression among didactic-year PA students. Further research on early screening methods and factors that encourage help-seeking behaviors may serve to inform programs about how to create learning environments that mitigate depression risk and promote wellbeing during professional training.

PMID:34293797 | DOI:10.1097/JPA.0000000000000369

Dement Geriatr Cogn Disord. 2021 Jul 22:1-5. doi: 10.1159/000517580. Online ahead of print.

ABSTRACT

INTRODUCTION: Mild cognitive impairment (MCI) represents a target for early detection and intervention in dementia, yet there is a shortage of validated screening tools in Arabic to diagnose MCI. The mini-Addenbrooke’s Cognitive Examination (m-ACE) is a brief cognitive battery that is scored out of 30 and can be administered in under 5 min providing a quick screening tool for assessment of cognition.

OBJECTIVE: We aimed to validate the m-ACE in Arabic speakers in Egypt with MCI to provide cut-off scores.

METHODS: We included 24 patients with MCI and 52 controls and administered the Arabic version of the m-ACE.

RESULTS: There was a statistically significant difference (p < 0.0001) on the total m-ACE score between MCI patients (mean 18.54, SD 3.05) and controls (mean 24.54, SD 2.68). There was also a statistically significant difference between MCI patients and controls on the total score and the fluency, visuospatial, and memory recall sub-scores of the m-ACE (p < 0.05). Performance on the m-ACE significantly correlated with both the Mini-Mental State Examination (MMSE) and the Addenbrooke’s Cognitive Examination-III (ACE-III). Using a receiver operator characteristic curve, the optimal cut-off score for MCI on the m-ACE total score was 21 out of 30 (87.5% sensitivity, 84.6% specificity, and 85.5% accuracy).

CONCLUSIONS: We validated the Arabic m-ACE in Egyptian patients with MCI and provided objective validation of it as a screening tool for MCI, with good sensitivity, specificity, and accuracy that is comparable to other translated versions of the m-ACE in MCI.

PMID:34293741 | DOI:10.1159/000517580

Ophthalmic Plast Reconstr Surg. 2021 Jul 21. doi: 10.1097/IOP.0000000000002027. Online ahead of print.

ABSTRACT

PURPOSE: To describe the efficacy of tocilizumab in the treatment of a cohort of patients with active thyroid-associated orbitopathy.

METHODS: Patients were identified with active thyroid-associated orbitopathy who were intolerant of or had progression of disease despite systemic corticosteroids and subsequently were treated with tocilizumab between January 2015 and December 2020. Clinical Activity Score, Thyroid-Associated Ophthalmopathy Scale score, and thyroid-stimulating immunoglobulin levels were assessed prior to initiation of tocilizumab, following the first dose, and after the completion of treatment.

RESULTS: Eleven patients were candidates for and underwent treatment with tocilizumab, 9 of which met criteria for analysis. Average age was 55.6 years. Average time between onset of active thyroid-associated orbitopathy and completion of tocilizumab was 6.5 months. Average number of infusions was 4.2. There was a statistically significant reduction in Clinical Activity Score, Thyroid-Associated Ophthalmopathy Scale score, and thyroid-stimulating immunoglobulin levels when comparing pre-treatment values (mean Clinical Activity Score 6.78 ± 1.09, mean Thyroid-Associated Ophthalmopathy Scale score 10.2 ± 1.92, mean thyroid-stimulating immunoglobulin level 440.6 [%]) to values immediately following completion of treatment (mean Clinical Activity Score 0.44 ± 0.53, mean difference 6.3 points, p < 0.001 [95% CI, 5.5-7.2]; mean Thyroid-Associated Ophthalmopathy Scale score 1.2 ± 1.09, mean difference 9.0 points, p < 0.001 [95% CI, 7.2-10.8]; mean thyroid-stimulating immunoglobulin level 200.7 [%], mean difference 239.9 [%], p = 0.001 [95% CI, 124.3-355.4]). One patient had elevation of cholesterol following therapy induction. Patients were followed for an average of 23.6 months after treatment. No patients had recurrence of active disease after completion of tocilizumab.

CONCLUSIONS: This study supports the use of tocilizumab as a therapy for the inflammatory phase of thyroid-associated orbitopathy.

PMID:34293786 | DOI:10.1097/IOP.0000000000002027

Nutrition. 2021 Jun 7;91-92:111386. doi: 10.1016/j.nut.2021.111386. Online ahead of print.

ABSTRACT

OBJECTIVES: The purpose of this study was to investigate the correlation between dietary patterns and the risk of sarcopenic obesity (SO) in community-dwelling elderly people.

METHODS: SO was defined as the coexistence of sarcopenia and obesity. Participants with low skeletal muscle index, low muscle strength, or low physical performance were diagnosed with sarcopenia, whereas obesity was defined as waist circumference ≥85 cm in men and ≥80 cm in women. Dietary patterns were determined by principal component analysis. Multinomial logistic regression analysis was used to evaluate the relationship between dietary patterns and SO.

RESULTS: Among 3795 Chinese participants, 112 (3.0%) were diagnosed with SO. After adjustment for confounding variables, lacto-ovo-vegetarian dietary pattern was negatively associated with risk of SO. The odds ratio for SO was 0.79 (95% confidence interval, 0.65-0.97; P = 0.027) for the lacto-ovo-vegetarian dietary pattern, whereas meat-fish and junk food dietary patterns were not associated with the risk of SO.

CONCLUSIONS: We suggest that older people should have a balanced daily diet such as a lacto-ovo-vegetarian dietary pattern to prevent the occurrence and progression of SO.

PMID:34293713 | DOI:10.1016/j.nut.2021.111386

Arch Gerontol Geriatr. 2021 Jul 15;97:104485. doi: 10.1016/j.archger.2021.104485. Online ahead of print.

ABSTRACT

PURPOSE: To compare the effects of exergames versus conventional physical training on the cognitive skills of older adults.

MATERIALS AND METHODS: Scientific studies published in PubMed, Web of Science, and Cochrane Library databases were searched. Individual studies were assessed using the Cochrane Risk-of-bias tool for randomized trials (RoB 2). The quality of evidence was evaluated using the Grading of Recommendations, Assessment, Development and Evaluations (GRADE Pro). The cognitive outcomes were Trail Making Test (TMT)-A, TMT-B, Stroop Word-Color test, Mini Mental State Examination (MMSE), and Montreal Cognitive Assessment (MoCA).

RESULTS: We identified 256 studies, in which 13 studies were included in the systematic review and 11 in the meta-analysis. The majority of the exergame interventions were based on the Xbox 360’s Kinect, followed by the Impact Dance Platform, Nintendo Wii, and the Bike Labyrinth. We observed heterogeneity in the conventional exercise group and in the duration of training, which ranged from 12 to 52 sessions. There was no statistically significant difference between groups in TMT-A (p=0.083), TMT-B (p=0.122), and Stroop (p=0.191). There were differences in favor of exergames in MMSE (raw mean difference=-1.58, 95% CI: -2.87 to -0.28, p<0.001) and MoCA (raw mean difference=-1.22, 95% CI: -2.24 to -0.20, p=0.019).

CONCLUSIONS: Despite statistical differences in MMSE and MoCA, these results should be interpreted with caution due to methodological heterogeneity. Some studies reported possible neurophysiological benefits induced by exergames, which should be explored in future investigations.

PMID:34293715 | DOI:10.1016/j.archger.2021.104485

J Mech Behav Biomed Mater. 2021 Jul 13;122:104695. doi: 10.1016/j.jmbbm.2021.104695. Online ahead of print.

ABSTRACT

OBJECTIVES: This study aimed to optimize the crystallization process and the microstructure of a new bioactive glass-ceramic (GC) previously developed by our research group to obtain machinable glass-ceramics.

METHODS: Differential scanning calorimetry (DSC) analyses were conducted to explore the characteristic temperatures and construct a semi-quantitative nucleation curve. The GC specimens were characterized by X-ray diffraction (XRD) and Rietveld refinement. Their brittleness index (B) and machinability were characterized and compared with IPS e.max-CAD®. Their Young’s modulus, fracture toughness, and hardness were assessed.

RESULTS: We found that the maximum crystal nucleation rate temperature of this GC is ~470 °C. Treatments were designed based on the 1st DSC peak onset (570 °C), 1st peak offset (650 °C), and 2nd peak offset (705 °C) crystallization temperatures of lithium metasilicate (LS, LiSi₂O₃) and lithium disilicate (LS2, Li₂Si₂O₅). Rietveld refinement indicated an increase in LS2 and a reduction in LS and amorphous phase for increased temperatures and longer treatment times. Their B values indicate good machinability compared with that of the control group based on statistical analyses. As expected, lower levels of LS2 increase the machinability regardless of the rotation speed adopted, leading to a greater depth of cut and reduced Edge Chipping Damage Depth (ECDD).

CONCLUSION: This bioactive GC with optimized microstructure presents high machinability. For treatment temperatures above 570 °C, the number of elongated LS2 crystals increases and decreases the amorphous phase content, which reduce the machinability of the GC, and should therefore be avoided. The best results were obtained using heat treatment at 570 °C, which produces LS crystals embedded in a glassy matrix (67%) with small contents of secondary phases.

PMID:34293695 | DOI:10.1016/j.jmbbm.2021.104695

Nurse Educ Pract. 2021 Jul 14;55:103150. doi: 10.1016/j.nepr.2021.103150. Online ahead of print.

ABSTRACT

AIM/OBJECTIVE: This paper sought to investigate the influence of the supernumerary clinical nurse educator role on the newly qualified graduate nurses’ professional development and successful transition to competent and confident practitioners in the acute care hospital environment.

BACKGROUND: The novice nurses learning in the inpatient clinical environment is affected by increasing patient acuity, complex conditions and organisational expectations. The supernumerary clinical nurse educator is uniquely positioned to prioritise these nurses’ education through protected and available time to support adaption in the workplace culture and retention in the organisation.

DESIGN: A convergent mixed methods design was used to investigate the relationship between the supernumerary clinical nurse educator role through the opinions and experiences of the graduate nurse.

METHODS: Data were collected in February – July 2015 from graduate nurses from three hospital sites in a healthcare organisation in Western Australia. The research used online questionnaires (n = 39) and face to face interviews (n = 10). Analysis of quantitative data used descriptive statistics and qualitative data used thematic analysis.

RESULTS: Four main themes were identified. These were: acknowledges new and challenging experiences, available to provide constructive responses, sympathises with anxiety and missing in action.

CONCLUSION: The graduate registered nurses perceived that clinical sympathy provided by the clinical nurse educator was essential to their new role of frontline nurses influencing their delivery of quality patient care and as a practical solution to champion the graduate nurses’ longevity in the future nursing workforce.

PMID:34293705 | DOI:10.1016/j.nepr.2021.103150

J Environ Manage. 2021 Jul 19;297:113316. doi: 10.1016/j.jenvman.2021.113316. Online ahead of print.

ABSTRACT

Agriculture and the food system emit a considerable amount of Greenhouse Gas (GHG) emissions in the atmosphere. Hence, current researchers, policymakers, and other stakeholders are calling for improving the environmental performance of agriculture. This study utilizes the countries of The Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation (BIMSTEC) to investigate the effect of agriculture value-added, pesticide use, renewable energy adoption, human capital, and economic growth on greenhouse gas emissions. The moderation effect of renewable energy use and human capital is also introduced to see whether they can offset agriculture’s emissions in these BIMSTEC economies. Having reported a state-of-the-art literature review, the econometric procedure applies the second-generation unit root tests, panel cointegration and panel quantile regression for three preferred model specifications. The result from the Panel quantile regression method reveals a U-shaped relationship between agriculture value-added and greenhouse gas emissions, suggesting the significance of a small farming system. Human capital has a negative effect, whereas pesticide use has a positive effect on greenhouse gas emissions. Furthermore, the moderation effect of human capital and pesticide use suggests that human capital is not significant enough to offset the effect of pesticide use on the greenhouse gas emissions, whereas the interaction of renewable and pesticide use suggests that renewable energy adoption in the agriculture sector can mitigate the effect of pesticide use on GHG emissions. Finally, the conclusions of the study support the achievement of few sustainable development goals.

PMID:34293673 | DOI:10.1016/j.jenvman.2021.113316

J Mech Behav Biomed Mater. 2021 May 23;122:104521. doi: 10.1016/j.jmbbm.2021.104521. Online ahead of print.

ABSTRACT

A solution is obtained for incompressible non-linearly elastic membranes that describes the bending of a cylindrical sector to form a perfect cylinder for a wide class of materials that includes isotropic materials and orthotropic materials reinforced by two families of mechanically equivalent fibres that are wound helically about the axial direction. Despite the relative simplicity of the physical problem, the solution of the corresponding boundary value problem for thick cylinders requires a numerical solution for even the simplest models. It is shown, however, that the thin shell solution provides an excellent approximation to the solution of the problem for cylindrical sectors whose thicknesses are an order of magnitude greater than that assumed for membranes. The approximate stress distribution in such thin shells is obtained. In these residually stressed cylinders, the radial stress is approximately zero but the hoop and axial stresses are finite. Estimates of the residual stresses in the unloaded state are obtained. A closed-form solution for the bending moment necessary to effect the deformation is also obtained.

PMID:34293693 | DOI:10.1016/j.jmbbm.2021.104521