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Nevin Manimala Statistics

Retinal tomography features of thrombotic microangiopathy associated with atypical hemolytic-uremic syndrome

Vestn Oftalmol. 2022;138(4):20-28. doi: 10.17116/oftalma202213804120.

ABSTRACT

OBJECTIVE: To evaluate structural and morphological changes in the retina using optical coherence tomography (OCT) in patients with thrombotic microangiopathy (TMA) associated with atypical hemolytic-uremic syndrome (aHUS).

MATERIAL AND METHODS: The study analyzed OCT data of 14 patients (28 eyes) with an established diagnosis of aHUS including such indicators as central retinal thickness (CRT), thickness of the retinal nerve fiver layer (RNFL), ganglion cell layer (GCL), retinal pigment epithelium (RPE), etc.

RESULTS: Patients with aHUS were noted to have an increase in CRT, paracentral acute middle maculopathy in the form of a hyperreflective defect primarily of the inner nuclear layer of paracentral localization, as well as disorganization of the RPE, which was observed statistically significantly more often compared to healthy persons (p=0.0001, p=0.001 and p=0.009 respectively). In the subgroup with thrombotic retinopathy (6 people) a statistically significant increase in CRT and peripapillary RNFL was found (p=0.004 and p=0.001) compared to patients without thrombotic retinopathy, as well as the presence of paracentral acute middle maculopathy and transudative macular retinoschisis (p=0.0001 and p=0.004). A statistically significant thinning of the peripapillary RNFL was revealed (p=0.0001) in the subgroup with symptoms of Purtscher-like retinopathy (PLR) found retrospectively (4 people) compared to patients without retrospective PLR symptoms. A statistically significant decrease in CRT was revealed (p=0.018) in the subgroup of patients receiving systemic therapy with eculizumab (5 people) compared with patients not receiving this therapy. Statistically significant correlations were recorded between the studied OCT indicators, laboratory indicators, and the level of systolic blood pressure (p<0.05).

CONCLUSION: According to OCT, paracentral acute middle maculopathy is a biomarker of thrombotic retinopathy and the activity of systemic TMA associated with aHUS. Arterial hypertension is an additional aggravating factor in the development of paracentral acute middle maculopathy and transudative macular retinoschisis. Targeted therapy with eculizumab leads to an effective decrease in CRT, which is potentially associated with regression of ischemic edema. The outcome of PLR involves thinning of peripapillary RNFL.

PMID:36004587 | DOI:10.17116/oftalma202213804120

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Subjective and objective analysis of orthodontic expert consensus on the assessment of orthodontic treatment outcomes

Orthod Craniofac Res. 2022 Aug 11. doi: 10.1111/ocr.12600. Online ahead of print.

ABSTRACT

OBJECTIVE: The objective of the study was to explore and validate the consensus of orthodontic experts on the assessment of orthodontic treatment outcomes based on subjective and objective analysis.

MATERIALS AND METHODS: The research consisted of two parts: the exploration and verification of expert consensus. First, a sample of 108 cases randomly selected from six dental schools in China were evaluated by 69 orthodontic experts and measured by researchers based on post-treatment study casts and lateral cephalograms, respectively. Then, through statistical analysis, the objective indicators significantly correlated with experts’ subjective evaluations were selected, their weights were determined, and the critical values of satisfactory, acceptable and unacceptable grades were screened. Subsequently, another sample of 72 cases were evaluated by another 36 orthodontic experts, and the subjective evaluation results were compared with the objective measurement results.

RESULTS: There were six model indicators and seven cephalometric indicators being significantly correlated with the experts’ subjective evaluations, including occlusal contact, overjet, midline, interproximal contact, alignment, occlusal relationship, L1/NB, ANB, SN/OP, U1/SN, LL-EP, Cm-Sn-UL and Ns-Prn-Pos, with a cumulative R2 of 0.704. In the verification part, the correlation coefficient between the 36 experts’ subjective scores and objective regression scores was 0.716 (P < .001); the correlation coefficient between the 36 experts’ subjective grades and objective grades was 0.757 (P < .001).

CONCLUSIONS: Orthodontic experts had good consistency in the subjective evaluation of the combined records of post-treatment study casts and lateral cephalograms. The objective indicators selected from subjective and objective analysis had good reliability and validity and could further improve the existing occlusal indices.

PMID:36004578 | DOI:10.1111/ocr.12600

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COVID-19-related school closures and patterns of hospital admissions with stress-related presentations in secondary school-aged adolescents: weekly time series

Br J Psychiatry. 2022 Aug 25:1-3. doi: 10.1192/bjp.2022.113. Online ahead of print.

ABSTRACT

This study examines health service indicators of stress-related presentations (relating to pain, mental illness, psychosomatic symptoms and self-harm) in adolescents of secondary school age, using Hospital Episode Statistics data for England. We examined weekly time series data for three academic years spanning the time before (2018-2019) and during the COVID-19 pandemic (2019-2020 and 2020-2021), including the first lockdown when schools were closed to the majority of pupils. For all secondary school children, weekly stress presentations dropped following school closures. However, patterns of elevated stress during school terms re-established after reopening, with girls aged 11-15 showing an overall increase compared with pre-pandemic rates.

PMID:36004552 | DOI:10.1192/bjp.2022.113

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Investigating the Effect of Perceived Social Support on the Promotion of Earthquake-Related Awareness in Iranian High School Students

Prehosp Disaster Med. 2022 Aug 25:1-6. doi: 10.1017/S1049023X22001170. Online ahead of print.

ABSTRACT

INTRODUCTION AND OBJECTIVE: Students are one of the groups in society that are always exposed to earthquake-related hazards. Perceived social support plays a major role in students’ self-efficacy to respond appropriately to earthquakes. Social support affects students’ beliefs about their abilities and enhances their performance during earthquakes. Thus, the present study aimed to investigate the effect of perceived social support on the promotion of earthquake-related awareness amongst high school students.

METHODS: The present educational intervention with a randomized control group was conducted on 64 high school students in Lordegan, Iran. The participants were randomly divided into an intervention and a control group. Earthquake-related awareness index and perceived social support were completed by the two groups before, immediately after, and two months after the intervention. The intervention group received 120-minute educational intervention sessions once a week for four weeks. The data were entered into the SPSS 20 software and were analyzed using descriptive and inferential statistical methods.

RESULTS: According to the results, educational intervention was effective in improving the perceived social support. The results also showed that increasing the perceived social support significantly improved the earthquake-related awareness among the high school students in the intervention group compared to the control group after the intervention (P <.001).

CONCLUSION: The findings revealed that perceived social support played a major role in promoting earthquake-related awareness in the high school students. Due to the accuracy of the study, these results can be considered in future investigations.

PMID:36004519 | DOI:10.1017/S1049023X22001170

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Assessment of depth of penetration and antibiofilm properties of Boswellia sacra compared with calcium hydroxide intracanal medicament (in vitro study)

Aust Endod J. 2022 Aug 25. doi: 10.1111/aej.12675. Online ahead of print.

ABSTRACT

Successful endodontic treatment requires advanced materials to eliminate biofilm This study aims to assess the penetration depth and the effectiveness of Boswellia sacra as a novel intracanal medicament compared with calcium hydroxide against Enterococcus faecalis biofilm. 60 single-rooted teeth were decoronated, prepared and sterilised. Fifty teeth were contaminated with a culture of E. faecalis (ATCC 19433) for 21 days. Two teeth were used to confirm the biofilm using scanning electron microscope. For colony-forming unit (CFU), 40 samples were divided into one control group (calcium hydroxide) and the other experimental group (B. sacra). Each group was divided into two subgroups to be tested at 3 and 7 days. The minimum inhibitory concentration (MIC) of B. sacra was determined, and the B. sacra’s ethanolic extract medicament was prepared. Eight discs divided into groups similar to CFU were used to evaluate live/dead bacteria using confocal laser scanning microscopy (CLSM). Ten teeth were selected for penetration depth using CLSM. The intracanal medicaments were mixed with 0.1% rhodamine B. were inserted into the root canals 0.2 slices were dissected and viewed under CLSM. The MIC of B. sacra was 1.25 mg/ml. The CFU evaluation proved that B. sacra are more effective than calcium hydroxide in the 3 days groups. However, it was statistically insignificant compared with calcium hydroxide after 7 days. The depth of penetration of B. sacra exceeds that of calcium hydroxide. B. sacra is an effective intracanal medicament.

PMID:36004503 | DOI:10.1111/aej.12675

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Effects of hysterectomy on pelvic floor function and sexual function-A prospective cohort study

Acta Obstet Gynecol Scand. 2022 Aug 25. doi: 10.1111/aogs.14437. Online ahead of print.

ABSTRACT

INTRODUCTION: Hysterectomy is one of the most common major surgical procedures in women. The effects of hysterectomy on pelvic floor and sexual function are uncertain. Our objective was to investigate the effects of hysterectomy for benign indications on pelvic floor and sexual function and to compare different modes of surgery.

MATERIAL AND METHODS: We performed a prospective clinical cohort study. In all, 260 women scheduled for hysterectomy answered validated questionnaires (Pelvic Floor Impact Questionnaire, Pelvic Floor Distress Inventory and Female Sexual Function Index). Participants were followed 6 months and 1 year after surgery. Data were analyzed using nonparametric statistics and mixed effect models.

RESULTS: Women with subtotal hysterectomy, vaginal hysterectomy, laparoscopic assisted vaginal hysterectomy, and previous prolapse/incontinence surgery were excluded from further analysis, leaving the remaining cohort to 242 patients. The response rate at 6 months and 1 year follow-up was 180/242 (74.3%) and 169/242 (69.8%), respectively. There was an improvement of pelvic floor function at both follow-ups; mean score of Pelvic Floor Impact Questionnaire at baseline was 42.5 (51.7), at 6 months 19.9 (42.2) and at 1 year 23.7 (50.3) (p < 0.001). The mean score of Pelvic Floor Distress Inventory at baseline was 69.6 (51.1), at 6 months 49 (43.2) and at 1 year 49 (43.2) (p < 0.001). There was an improvement of sexual function after 6 months (mean score of Female Sexual Function Index at baseline 17.9 [SD 11.7] and at 6 months 21.0 [SD 11.7]) (p < 0.001). There was no difference in pelvic floor or sexual function when comparing surgical techniques.

CONCLUSIONS: Robotic assisted laparoscopic hysterectomy, laparoscopic hysterectomy and abdominal hysterectomy improve pelvic floor function to the same extent at 6 months and 1 year after surgery. There was an overall improvement of sexual function 6 months after hysterectomy, but this did not persist after 1 year.

PMID:36004493 | DOI:10.1111/aogs.14437

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The Statistical Fragility of Operative vs Nonoperative Management for Achilles Tendon Rupture: A Systematic Review of Comparative Studies

Foot Ankle Int. 2022 Aug 24:10711007221108078. doi: 10.1177/10711007221108078. Online ahead of print.

ABSTRACT

BACKGROUND: The statistical significance of randomized controlled trials (RCTs) and comparative studies is often conveyed utilizing the P value. However, P values are an imperfect measure and may be vulnerable to a small number of outcome reversals to alter statistical significance. The interpretation of the statistical strength of these studies may be aided by the inclusion of a Fragility Index (FI) and Fragility Quotient (FQ). This study examines the statistical stability of studies comparing operative vs nonoperative management for Achilles tendon rupture.

METHODS: A systematic search was performed of 10 orthopaedic journals between 2000 and 2021 for comparative studies focusing on management of Achilles tendon rupture reporting dichotomous outcome measures. FI for each outcome was determined by the number of event reversals necessary to alter significance (P < .05). FQ was calculated by dividing the FI by the respective sample size. Additional subgroup analyses were performed.

RESULTS: Of 8020 studies screened, 1062 met initial search criteria with 17 comparative studies ultimately included for analysis, 10 of which were RCTs. A total of 40 outcomes were examined. Overall, the median FI was 2.5 (interquartile range [IQR] 2-4), the mean FI was 2.90 (±1.58), the median FQ was 0.032 (IQR 0.012-0.069), and the mean FQ was 0.049 (±0.062). The FI was less than the number of patients lost to follow-up for 78% of outcomes.

CONCLUSION: Studies examining the efficacy of operative vs nonoperative management of Achilles tendon rupture may not be as statistically stable as previously thought. The average number of outcome reversals needed to alter the significance of a given study was 2.90. Future analyses may benefit from the inclusion of a fragility index and a fragility quotient in their statistical analyses.

PMID:36004430 | DOI:10.1177/10711007221108078

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A multi-country cross-sectional study to assess predictors of daily versus on-demand oral pre-exposure prophylaxis in youth from South Africa, Uganda and Zimbabwe

J Int AIDS Soc. 2022 Aug;25(8):e25975. doi: 10.1002/jia2.25975.

ABSTRACT

INTRODUCTION: Sub-Saharan Africa (SSA) carries the burden of the HIV epidemic, especially among adolescents and young people (AYP). Little is known about pre-exposure prophylaxis (PrEP) uptake and preferences among AYP in SSA. We describe preferences for daily and on-demand PrEP among AYP in South Africa, Uganda and Zimbabwe.

METHODS: A cross-sectional survey was conducted in 2019 among 13- to 24-year olds, capturing socio-demographics, HIV risk behaviours and preferences for daily or on-demand PrEP. Logistic regression models were used to estimate odds ratios, adjusting for site, sex and age.

RESULTS AND DISCUSSION: A total of 1330 participants from Cape Town (n = 239), Johannesburg (n = 200), Entebbe (n = 491) and Chitungwiza (n = 400) were enrolled; 673 (51%) were male, and the median age was 19 years (interquartile range 17-22 years). Of 1287 participants expressing a preference, 60% indicated a preference for on-demand PrEP with differences by site (p < 0.001), sex (p < 0.001) and age group (p = 0.003). On-demand PrEP was most preferred in Entebbe (75%), among males (65%) versus females (54%) and in older participants (62% in 18- to 24-year-olds vs. 47% in 13- to 15-year-olds). After adjusting for site, sex and age group, preference for on-demand PrEP decreased as sex frequency over the past month increased (p-trend = 0.004) and varied with the number of partners in the last 6 months, being least popular among those reporting four or more partners (p = 0.02). Participants knowing further in advance that they were likely to have sex were more likely to prefer on-demand PrEP (p-trend = 0.02). Participants having a larger age gap with their most recent partner and participants whose last partner was a transactional sex partner or client were both less likely to prefer on-demand compared to daily PrEP (p = 0.05 and p = 0.09, respectively). Participants who knew their most recent partner was living with HIV or who did not know the HIV status of their most recent partner were less likely to prefer on-demand PrEP (p = 0.05).

CONCLUSIONS: Our data show that AYP in four SSA communities prefer on-demand over daily PrEP options, with differences seen by site, age and sex. PrEP demand creation needs to be reviewed, optimized and tailored to socio-demographic differences and designed in conjunction with AYP.

PMID:36002910 | DOI:10.1002/jia2.25975

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Determinants of dietary practice among pregnant women at the public hospitals in Bench-Sheko and Kaffa Zones, Southwest Ethiopia

BMC Nutr. 2022 Aug 24;8(1):88. doi: 10.1186/s40795-022-00588-7.

ABSTRACT

BACKGROUNDS: The frequency of poor dietary practice due to inappropriate dietary habits is higher during pregnancy compared to any other stage of the life cycle. Suboptimal dietary practices during pregnancy can increase the risk of intrauterine growth restriction, low birth weight, anemia, prenatal and infant mortality, and morbidity. Therefore, this study aimed to determine the dietary practice and associated factors among pregnant women at the public hospitals of Bench-Sheko and Kaffa zone.

METHODOLOGY: An institutional-based cross-sectional study design was conducted among 566 pregnant women who attended antenatal care at the public hospitals of the Bench-Sheko and Kaffa zones. A systematic random sampling technique was employed to select the study units. The data were entered into Epi Data 3.1 and exported to Statistical Package for Social Science (SPSS) version 21 software for further analysis. Both Binary and Multivariable logistic regression analyses were used to examine the association between dependent and independent variables. The Crude Odd Ratio (COR) and Adjusted Odd Ratio (AOR) with 95% Confidence interval (CI) were calculated and the variable with P-value < 0.05 was considered statistically significant.

RESULT: According to this study, only 23.7% (95% CI: 20.1, 27.4) of the study participants had a good dietary practice. The urban residents (AOR = 2.64; 95% CI:1.18, 5.92), monthly income of > 2000ETB (AOR = 2.47; 95% CI: 1.31,4.65), having nutrition information (AOR = 2.5; 95% CI: 1.14,5.52), good dietary knowledge (AOR = 2.79; 95% CI: 1.48,5.27), mothers occupation of employer (AOR = 1.88; 95% CI: 1.04,3.42) and a family size < 5 (AOR = 3.37; 95% CI: 1.32,8.65) were determinate of dietary practice.

CONCLUSION: Generally, the prevalence of good dietary practice is suboptimal in the study area. Urban residency, monthly income > 2000ETB, good dietary knowledge, having nutrition information, family size < 5, and government employed mothers were the predictors of the good dietary practice in the Bench-Sheko and Kaffa zone. Therefore, providing in-service training for health professionals and assigning nutritionist to each public hospital should be done to provide health and nutrition education; and strengthen the existed nutrition counseling service for pregnant women. Moreover, the government should create sustainable income-generating activities for pregnant women.

PMID:36002906 | DOI:10.1186/s40795-022-00588-7

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Emergency medicine physician burnout before and during the COVID-19 pandemic

Isr J Health Policy Res. 2022 Aug 24;11(1):30. doi: 10.1186/s13584-022-00539-4.

ABSTRACT

BACKGROUND: Burnout is a common issue among physicians, and the rate among emergency medicine physicians (EPs) appears to be higher than those of other medical specialties. The COVID-19 pandemic presents unprecedented challenges to the medical community worldwide, but its effects on EP burnout has not yet been determined.

METHODS: We conducted a three-stage nationwide study between July 2019 and June 2021. First, we evaluated the responses to burnout questionnaires that had been filled in by EP before the COVID-19 pandemic. We then re-sent the same questionnaires, with an addition of pandemic-specific questions. The third step involved a small group of EPs who participated in a burnout reduction workshop and re-took the questionnaires after a 3-month interval. The Maslach Burnout Inventory measured three burnout scales and a Work and Meaning Inventory predicts job satisfaction. Descriptive, univariate, and multivariate statistical tests were used to analyze the data.

RESULTS: In the first stage, 240 questionnaires were sent by email to all Israeli EPs listed in emergency departments nationwide, and 84 out of 88 submitted questionnaires were completed in full before the pandemic. 393 questionnaires were sent in the second stage during the pandemic and 93 out of 101 submitted questionnaires were completed in full. Twenty EPs participated in the workshop and 13 out of 20 submitted questionnaires were completed in full. Burnout levels were high (Maslach) among EPs before the pandemic and increased during the pandemic. The feelings of personal accomplishment and work meaning-both protective factors from burnout-were significantly higher in the second (pandemic) stage. The pandemic-specific burnout factors were fear of infecting family members, lack of care centers for the physician’s children, increased workload, and insufficient logistic support. The physician-oriented intervention had no significant impact on burnout levels (p < 0.412, Friedman test).

CONCLUSIONS: Physician burnout is a major global problem, and it is now being aggravated by the challenges of the COVID-19 pandemic. Healthcare administrators should be alerted to pandemic-specific stress factors in order to help teams cope better and to prevent further worsening of the burnout. Further research is warranted to determine the lasting effect of the pandemic on EM physician burnout and the best means for reducing it.

PMID:36002903 | DOI:10.1186/s13584-022-00539-4