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Nevin Manimala Statistics

Patients With and Without Double Crush Syndrome Achieve Similar Rates of Clinical Improvement Following Carpal Tunnel Release

Hand (N Y). 2024 Feb 29:15589447241233764. doi: 10.1177/15589447241233764. Online ahead of print.

ABSTRACT

BACKGROUND: The purpose of this study is to compare outcomes of carpal tunnel release (CTR) in patients with and without double crush syndrome (DCS), defined as concurrent carpal tunnel syndrome (CTS) and cervical radiculopathy at C5-T1 on preoperative nerve conduction studies.

METHODS: Patients with preoperative nerve conduction studies who underwent unilateral, isolated CTR were retrospectively identified. All patients completed preoperative and 3-month postoperative Patient-Reported Outcomes Measurement Information System (PROMIS) upper extremity (UE) and pain interference (PI), and Disabilities of the Arm, Shoulder and Hand (QuickDASH) questionnaires, and responded to the anchor question: “Since your treatment, how would you rate your overall function?” (much worse, worse, slightly worse, no change, slightly improved, improved, much improved). Preoperative, postoperative, and changes in scores for UE, PI, and QuickDASH were compared, as were the anchor question responses and rates of achieving the minimal clinically important difference (MCID).

RESULTS: Sixty-three patients with DCS and 115 patients with CTS only were included. At 3- to 4-month follow-up, absolute and change in UE, PI, and QuickDASH scores were not statistically different between patients with DCS and CTS. Rates of anchor question response and MCID achievement were comparable for patients with CTS only and DCS on each questionnaire. The MCID achievement ranged from 48.4% to 68.8% in the unmatched cohort and 48.4% to 60% in the matched group.

CONCLUSIONS: At 3 to 4 months, patients with DCS experience similar patient-reported symptomatic and functional improvement, and achieve MCID of outcome measures at comparable rates to patients with CTS only. For patients with nerve compression at the carpal tunnel and cervical spine, CTR is a reasonable first step prior to proceeding with cervical spine decompression.

PMID:38420760 | DOI:10.1177/15589447241233764

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Nevin Manimala Statistics

Beyond the burn: An observational study of cardiovascular risk in burn survivors in the north of Iran

Int Wound J. 2024 Mar;21(3):e14794. doi: 10.1111/iwj.14794.

ABSTRACT

Burn survivors experience profound physiological changes following injury, which may have lasting implications for cardiovascular health. This study aims to investigate the cardiovascular risk profile among burn survivors treated at a burn center in northern Iran. This observational study was conducted from 2022 to 2023 at the burn centre affiliated with Guilan University of Medical Sciences, Rasht, Iran. This study assessed a cohort study of 210 burn survivors, focusing on individuals with ≥20% TBSA burn injuries who had recovered and returned to their daily lives. This study assessed patients’ lipid profiles, Framingham General Cardiovascular Risk Score (FGCRS) and risk factors, including demographics, clinical variables and physical activity. Statistical analysis employed descriptive and inferential statistics. The mean age was 49.23 years, and the mean TBSA burned was 37.06%. The risk of cardiovascular disease in 66% of the study population was less than 10%, and in 13%, it was more than 20%. Significant associations were identified between CVD risk and sex, diabetes, hypertension, BMI, TBSA burned, years after burn, physical activity level and LDL. Of the lipid profile measures, LDL, triglycerides and TC/HDL exceeded the desirable levels. This research highlights the heightened cardiovascular risk in burn survivors, emphasizing the necessity for targeted interventions and regular monitoring. Identifying modifiable risk factors enables healthcare practitioners to develop tailored strategies, enhancing cardiovascular health in this vulnerable population and improving overall outcomes and quality of life.

PMID:38420751 | DOI:10.1111/iwj.14794

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Nevin Manimala Statistics

Platelet-Rich Plasma Versus Alternative Injections for Osteoarthritis of the Knee: A Systematic Review and Statistical Fragility Index-Based Meta-analysis of Randomized Controlled Trials

Am J Sports Med. 2024 Feb 29:3635465231224463. doi: 10.1177/03635465231224463. Online ahead of print.

ABSTRACT

BACKGROUND: Based in part on the results of randomized controlled trials (RCTs) that suggest a beneficial effect over alternative treatment options, the use of platelet-rich plasma (PRP) for the management of knee osteoarthritis (OA) is widespread and increasing. However, the extent to which these studies are vulnerable to slight variations in the outcomes of patients remains unknown.

PURPOSE: To evaluate the statistical fragility of conclusions from RCTs that reported outcomes of patients with knee OA who were treated with PRP versus alternative nonoperative management strategies.

STUDY DESIGN: Systematic review and meta-analysis; Level of evidence, 2.

METHODS: All RCTs comparing PRP with alternative nonoperative treatment options for knee OA were identified. The fragility index (FI) and reverse FI were applied to assess the robustness of conclusions regarding the efficacy of PRP for knee OA. Meta-analyses were performed to determine the minimum number of patients from ≥1 trials included in the meta-analysis for which a modification on the event status would change the statistical significance of the pooled treatment effect.

RESULTS: In total, this analysis included outcomes from 1993 patients with a mean ± SD age of 58.0 ± 3.8 years. The mean number of events required to reverse significance of individual RCTs (FI) was 4.57 ± 5.85. Based on random-effects meta-analyses, PRP demonstrated a significantly higher rate of successful outcomes when compared with hyaluronic acid (P = .002; odds ratio [OR], 2.19; 95% CI, 1.33-3.62), as well as higher rates of patient-reported symptom relief (P = .019; OR, 1.55; 95% CI, 1.07-2.24), not requiring a reintervention after the initial injection treatment (P = .002; OR, 2.17; 95% CI, 1.33-3.53), and achieving the minimal clinically important difference (MCID) for pain improvement (P = .007; OR, 6.19; 95% CI, 1.63-23.42) when compared with all alternative nonoperative treatments. Overall, the mean number of events per meta-analysis required to change the statistical significance of the pooled treatment effect was 8.67 ± 4.50.

CONCLUSION: Conclusions drawn from individual RCTs evaluating PRP for knee OA demonstrated slight robustness. On meta-analysis, PRP demonstrated a significant advantage over hyaluronic acid as well as improved symptom relief, lower rates of reintervention, and more frequent achievement of the MCID for pain improvement when compared with alternative nonoperative treatment options. Statistically significant pooled treatment effects evaluating PRP for knee OA are more robust than approximately half of all comparable meta-analyses in medicine and health care. Future RCTs and meta-analyses should consider reporting FIs and fragility quotients to facilitate interpretation of results in their proper context.

PMID:38420745 | DOI:10.1177/03635465231224463

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Nevin Manimala Statistics

Treatment of Osteoporosis after Hip Fracture: Survey of the Korean Hip Society

Hip Pelvis. 2024 Mar 1;36(1):62-69. doi: 10.5371/hp.2024.36.1.62.

ABSTRACT

PURPOSE: To assess current practice in the treatment of osteoporosis in patients who underwent treatment for hip fracture in South Korea.

MATERIALS AND METHODS: A survey of 97 members of the Korean Hip Society, orthopedic hip surgeons who administer treatment for hip fractures in South Korea, was conducted. The survey was conducted for assessment of demographic data and perceptions regarding the management of osteoporosis in patients who have undergone treatment for hip fracture. Analysis of the data was performed using descriptive statistical methods.

RESULTS: The majority of participants were between the age of 41 and 50 years, and 74% were practicing in tertiary hospitals. Testing for serum vitamin D levels (82%) was the most commonly performed laboratory test. Calcium and vitamin D were prescribed for more than 80% of patients by 47% and 52% of participants, respectively. Denosumab was the most commonly used first-line treatment option for osteoporosis in hip fracture patients. Bisphosphonate was most often perceived as the cause of atypical femoral fractures, and the most appropriate time for reoperation was postoperative 12 months. Teriparatide was most preferred after cessation of bisphosphonate and only prescribing calcium and vitamin D was most common in high-risk patients for prevention of atypical femoral fracture.

CONCLUSION: The results of this study that surveyed orthopedic hip surgeons showed that most participants followed the current strategy for management of osteoporosis. Because the end result of osteoporosis is a bone fracture, active involvement of orthopedic surgeons is important in treating this condition.

PMID:38420739 | DOI:10.5371/hp.2024.36.1.62

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Nevin Manimala Statistics

Vitamin D levels in idiopathic inflammatory myopathy patients: a meta-analysis

Postgrad Med. 2024 Feb 29. doi: 10.1080/00325481.2024.2325335. Online ahead of print.

ABSTRACT

PURPOSE: This meta-analysis aimed to explore correlations between vitamin D and idiopathic inflammatory myopathy (IIM).

METHODS: A comprehensive database search was conducted on 13 October 2020. Mean differences (MDs) and aggregated risk ratios (RR) with 95% confidence intervals (CIs) were used to determine the correlation between vitamin D deficiency (VDD) and IIM. Statistical analysis was performed with RevMan 5.4 and Stata15, statistical significance was set at p < 0.05.

RESULTS: Search revealed five studies with 286 IIM patients and 480 healthy controls. Results with random-effects modeling indicated that serum vitamin D levels were significantly lower in IIM patients than in healthy controls (MD = -13.10 ng/mL; 95% CI: -16.51 to -9.68; p < 0.00001). No differences were found between patients with IIM and other autoimmune diseases on vitamin D levels (MD =-2.65 ng/mL; 95% CI: -11.31-6.01; p = 0.55). In two studies with 185 IIM patients, those with low vitamin D levels exhibited higher creatine kinase levels (MD = 85.20 IU/L; 95% CI: 72.67-97.73; p < 0.00001) than those with normal vitamin D levels. VDD was correlated with an increased risk of IIM (RR = 3.24, 95% CI: 1.81-5.79; p < 0.0001).

CONCLUSION: This meta-analysis showed correlations between vitamin D level and IIM. The results indicated, VDD may be a risk factor for IIM, a determinant of immune dysregulation in IIM, or a consequence of IIM. Also, it implied further research to determine whether vitamin D supplementation is beneficial for patients with IIM.

PMID:38420733 | DOI:10.1080/00325481.2024.2325335

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Risk assessment and pathogen profile of surgical site infections in traumatic brain injury patients undergoing emergency craniotomy: A retrospective study

Int Wound J. 2024 Mar;21(3):e14743. doi: 10.1111/iwj.14743.

ABSTRACT

Emergency craniotomy in patients with traumatic brain injury poses a significant risk for surgical site infections (SSIs). Understanding the risk factors and pathogenic characteristics of SSIs in this context is crucial for improving outcomes. This comprehensive retrospective analysis spanned from February 2020 to February 2023 at our institution. We included 25 patients with SSIs post-emergency craniotomy and a control group of 50 patients without SSIs. Data on various potential risk factors were collected, including demographic information, preoperative conditions, and intraoperative details. The BACT/ALERT3D Automated Bacterial Culture and Detection System was utilized for rapid bacterial pathogen identification. Statistical analyses included univariate and multivariate logistic regression to identify significant risk factors for SSIs. The study identified Klebsiella pneumoniae, Escherichia coli, and Staphylococcus aureus as the most prevalent pathogens in SSIs. Significant risk factors for SSIs included the lack of preoperative antibiotic use, postoperative drainage tube placement, diabetes mellitus, and the incorporation of invasive procedures, all of which showed a significant association with SSIs in the univariate analysis. The multivariate analysis further highlighted the protective effect of preoperative antibiotics and the increased risks associated with anaemia, diabetes mellitus, postoperative drainage tube placement, and the incorporation of invasive procedures. Our research underscores the critical role of factors like insufficient preoperative antibiotics, postoperative drainage, invasive techniques, anaemia, and diabetes mellitus in elevating the risk of surgical site infections in traumatic brain injury patients undergoing emergency craniotomy. Enhanced focus on these areas is essential for improving surgical outcomes.

PMID:38420721 | DOI:10.1111/iwj.14743

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Nevin Manimala Statistics

Unveiling challenges in Mendelian randomization for gene-environment interaction

Genet Epidemiol. 2024 Feb 29. doi: 10.1002/gepi.22552. Online ahead of print.

ABSTRACT

Gene-environment (GxE) interactions play a crucial role in understanding the complex etiology of various traits, but assessing them using observational data can be challenging due to unmeasured confounders for lifestyle and environmental risk factors. Mendelian randomization (MR) has emerged as a valuable method for assessing causal relationships based on observational data. This approach utilizes genetic variants as instrumental variables (IVs) with the aim of providing a valid statistical test and estimation of causal effects in the presence of unmeasured confounders. MR has gained substantial popularity in recent years largely due to the success of genome-wide association studies. Many methods have been developed for MR; however, limited work has been done on evaluating GxE interaction. In this paper, we focus on two primary IV approaches: the two-stage predictor substitution and the two-stage residual inclusion, and extend them to accommodate GxE interaction under both the linear and logistic regression models for continuous and binary outcomes, respectively. Comprehensive simulation study and analytical derivations reveal that resolving the linear regression model is relatively straightforward. In contrast, the logistic regression model presents a considerably more intricate challenge, which demands additional effort.

PMID:38420714 | DOI:10.1002/gepi.22552

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Evaluation of species-specific polyclonal antibodies to detect and differentiate between Neospora caninum and Toxoplasma gondii

J Vet Diagn Invest. 2024 Feb 29:10406387241234322. doi: 10.1177/10406387241234322. Online ahead of print.

ABSTRACT

Neosporosis and toxoplasmosis are major causes of abortion in livestock worldwide, leading to substantial economic losses. Detection tools are fundamental to the diagnosis and management of those diseases. Current immunohistochemistry (IHC) tests, using sera raised against whole parasite lysates, have not been able to distinguish between Toxoplasma gondii and Neospora caninum. We used T. gondii and N. caninum recombinant proteins, expressed in Escherichia coli and purified using insoluble conditions, to produce specific polyclonal rabbit antisera. We aimed to develop species-specific sera that could be used in IHC on formalin-fixed, paraffin-embedded (FFPE) tissue sections to improve the diagnosis of ruminant abortions caused by protozoa. Two polyclonal rabbit sera, raised against recombinant proteins, anti-Neospora-rNcSRS2 and anti-Toxoplasma-rTgSRS2, had specificity for the parasite they were raised against. We tested the specificity for each polyclonal serum using FFPE tissue sections known to be infected with T. gondii and N. caninum. The anti-Neospora-rNcSRS2 serum labeled specifically only N. caninum-infected tissue blocks, and the anti-Toxoplasma-rTgSRS2 serum was specific to only T. gondii-infected tissues. Moreover, tissues from 52 cattle and 19 sheep previously diagnosed by lesion profiles were tested using IHC with our polyclonal sera and PCR. The overall agreement between IHC and PCR was 90.1% for both polyclonal anti-rNcSRS2 and anti-rTgSRS2 sera. The polyclonal antisera were specific and allowed visual confirmation of protozoan parasites by IHC, but they were not as sensitive as PCR testing.

PMID:38420701 | DOI:10.1177/10406387241234322

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Nevin Manimala Statistics

Characterizing the real-world economic burden of metastatic castration-sensitive prostate cancer in the United States

J Med Econ. 2024 Feb 29:1-16. doi: 10.1080/13696998.2024.2323901. Online ahead of print.

ABSTRACT

Aims: To describe healthcare resource utilization (HRU) and costs of patients with metastatic castration-sensitive prostate cancer (mCSPC).Methods: Linked data from Flatiron Metastatic PC Core Registry and Komodo’s Healthcare Map were evaluated (01/2016-12/2021). Patients with chart-confirmed diagnoses for metastatic PC without confirmed castration resistance in Flatiron who initiated androgen deprivation therapy (ADT) monotherapy or advanced therapy for mCSPC in 2017 or later (index date) with a corresponding pharmacy or medical claim in Komodo Health were included. Advanced therapies considered were androgen-receptor signaling inhibitors, chemotherapies, estrogens, immunotherapies, poly ADP-ribose polymerase inhibitors, and radiopharmaceuticals. Patients with <12 months of continuous insurance eligibility before index were excluded. Per-patient-per-month (PPPM) all-cause and PC-related HRU and costs (medical and pharmacy; from a payer’s perspective in 2022 $USD) were described in the 12-month baseline period and follow-up period (from the index date to castration resistance, end of continuous insurance eligibility, end of data availability, or death).Results: Of 871 patients included (mean age: 70.6 years), 52% initiated ADT monotherapy as their index treatment without documented advanced therapy use. During baseline, 31% of patients had a PC-related inpatient admission and 94% had a PC-related outpatient visit; mean all-cause costs were $2,551 PPPM and PC-related costs were $839 PPPM with $787 PPPM attributable to medical costs. Patients had a mean follow-up of 15 months, during which 38% had a PC-related inpatient admission and 98% had a PC-related outpatient visit; mean all-cause costs were $5,950 PPPM with PC-related total costs of $4,363 PPPM, including medical costs of $2,012 PPPM.Limitations: All analyses were descriptive; statistical testing was not performed. Treatment effectiveness and clinical outcomes were not assessed.Conclusion: This real-world study demonstrated a significant economic burden in mCSPC patients, and a propensity to use ADT monotherapy in clinical practice despite the availability and guideline recommendations of advanced life-prolonging therapies.

PMID:38420699 | DOI:10.1080/13696998.2024.2323901

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Nevin Manimala Statistics

Effect of topical application of autologous platelet gel on sternal wound infection after cardiac surgery: A meta-analysis

Int Wound J. 2024 Mar;21(3):e14761. doi: 10.1111/iwj.14761.

ABSTRACT

Following heart operation, a severe life-threatening complication has been identified by investigators who have recently discovered that local application of platelet-rich plasma (PRP) can lower the rate of wound infection in heart surgery. Nevertheless, due to the low quality of these trials, we have tried to perform high-quality meta-analyses to prove the efficacy of PRP in heart surgery for post-operative wound infections. In this study, five randomised controlled trials (RCTs) were chosen from three databases, and there were 1005 studies to analyse the data. Among 181 cases, PRP was applied to the surgical site, and 205 in the control group. Both the CI and the OR or the average difference (MD) were computed with either a fixed or random-effect model. A meta-analysis of the data was carried out with RevMan 5.3. The results showed that there were no statistically significant differences in the incidence of post-operative surgical site infection (SSI) in control group compared to those treated with PRP gel (OR, 0.97; 95% CI, 0.38, 2.47; p = 0.95); In the heart operation, the local application of PRP gel decreased the rate of drainage after operation (MD, -217.82; 95% CI, -335.38, -100.26; p = 0.0003); The operation time of the PRP gel was not significantly different from that of the control group (MD, 12.65; 95% CI, -2.95, 28.24; p = 0.11). Contrary to earlier research, the application of autoplatelet gel in heart surgery did not seem to decrease operative site infections after the operation, but it did decrease the amount of postoperative drainage. Nevertheless, because of the limited number of RCTs in this meta-analysis, caution should be exercised in their treatment. More high-quality randomised, large-sample trials are required to further confirm the findings.

PMID:38420690 | DOI:10.1111/iwj.14761