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Nevin Manimala Statistics

Association of serum and local GRP78 and CHOP expressions with disease progression in patients with non-traumatic osteonecrosis of femoral head

J Orthop Surg Res. 2025 Jan 29;20(1):108. doi: 10.1186/s13018-025-05541-5.

ABSTRACT

BACKGROUND: The endoplasmic reticulum stress (ER stress) has been involved in various musculoskeletal disorders including non-traumatic osteonecrosis of femoral head (NT-ONFH).

OBJECTIVE: The current study aimed to investigate the association of glucose-regulated protein 78 (GRP78) as well as CCAAT/enhancer-binding protein homologous protein (CHOP) expressions in serum and femoral head (FH) tissues with NT-ONFH’s severity.

METHODS: We enrolled NT-ONFH patients (n = 150) alongside healthy controls (HCs, n = 150). Meanwhile, 49 patients with femoral neck fracture (FNF) were also enrolled. Serum CHOP and GRP78 levels were determined through enzyme linked immunosorbent assay (ELISA). Local CHOP and GRP78 expressions were detected by immunohistochemistry, western blot, alongside real-time polymerase chain reaction (RT-PCR). Radiographic severity was assessed by FICAT grading system. The visual analogue scale (VAS) together with Harris hip score (HHS) were utilized to determine symptomatic severity.

RESULTS: Serum CHOP and GRP78 levels were markedly increased in NT-ONFH patients than HCs. NT-ONFH patients at FICAT stage 4 showed significant higher serum CHOP and GRP78 levels in contrast with those at stage 3. Furthermore, patients at stage 3 demonstrated higher serum CHOP and GRP78 levels than those at stage 2. There was a positive correlation observed between the serum CHOP and GRP78 levels and the severity of the FICAT stages. A total of 42 ONFH patients at FICAT stage 3, 40 patients at FICAT stage 4, and 49 FNF patients received total hip replacement (THR). The mRNA and protein levels of CHOP and GRP78 were elevated in necrotic area compared to the non-necrotic area of ONFH patients and the FH tissues of FNF patients with statistical significance. The expression levels of CHOP and GRP78 within the local tissues were significantly elevated in patients at FICAT stage 4 as opposed to those at stage 3. Besides, ROC curve analysis indicated that serum and local CHOP and GRP78 expressions may act as indicators of disease progression. The levels of CHOP and GRP78, both in serum and at the local site, were in a positive correlation with VAS scores but an inverse relationship with HHS.

CONCLUSIONS: Serum and local GRP78 as well as CHOP expressions were positively linked with disease progression in NT-ONFH patients. Potential therapeutics targeting ER stress related protein may serve as a method for alleviating NT-ONFH.

PMID:39881366 | DOI:10.1186/s13018-025-05541-5

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Nevin Manimala Statistics

Reproducibility of peak force for isometric and isokinetic multi-joint leg extension exercise

BMC Sports Sci Med Rehabil. 2025 Jan 29;17(1):14. doi: 10.1186/s13102-025-01061-1.

ABSTRACT

BACKGROUND: Isokinetic dynamometry is a common tool for evaluating muscle function and is used across various disciplines. Technical advancements have shifted focus towards multi-joint exercises such as the leg press, offering insights into practical human movement dynamics. However, previous reproducibility studies have focused predominantly on single-joint exercises, warranting investigations into the reliability of multi-joint exercises. This study aimed to assess the reproducibility of peak force (PF) during multi-joint leg press exercises using the IsoMed 2000 dynamometer.

METHODS: Thirty physically active subjects (mean: stature 179.4 cm; body mass 76.0 kg; age 30.6 years) participated in three testing sessions. Each session consisted of isometric and isokinetic leg press exercises. Knee angles for isometric exercises included 100° and 140°; velocities for isokinetic exercise included 30 mm/s and 600 mm/s. The first session served as the familiarization session. Statistical analysis included paired sample t-tests, Cohen’s d effect sizes, intraclass correlation coefficients (ICC), standard errors of measurement (SEM), and Bland-Altman calculations, including corresponding plots.

RESULTS: Descriptive data revealed consistent PF across sessions, with a significant between-sessions difference observed only for isometric (100°) leg extension in the right leg (p < 0.001; d = 0.13). ICC calculations showed high relative reproducibility (ICC > 0.911), with SEM ranging from 37.6 to 294.7 N (SEM% 2.3-6.3%, respectively). Bland-Altman plots depicted minimal intersession disparities (-141.8-68.3 N, respectively – 3.02-1.26%), supporting high reliability.

CONCLUSIONS: This study highlights the reliability of assessing peak force during isometric and isokinetic leg press exercises using the IsoMed 2000 after a single familiarization session. These findings support its utility in muscular performance evaluation, urging practitioners to incorporate familiarization trials for accurate assessments.

PMID:39881349 | DOI:10.1186/s13102-025-01061-1

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Diagnostic utility of LEF1 and β-catenin in WNT pathway tumors with CTNNB1 mutation

World J Surg Oncol. 2025 Jan 29;23(1):30. doi: 10.1186/s12957-025-03675-8.

ABSTRACT

OBJECTIVE: This study aimed to compare the expression of lymphoid enhancer factor 1 (LEF1) and β-catenin in basal cell adenoma (BA), desmoid-type fibromatosis (DF), and pancreatic solid pseudopapillary neoplasm (SPN) to evaluate their diagnostic utility in tumors associated with the WNT/β-catenin signaling pathway harboring the mutation of CTNNB1 gene 3 exon.

METHODS: Eighty tumor patients, including 26 BAs, 30 DFs, and 24 SPNs, were analyzed. Immunohistochemical staining was identified positive (nuclear staining of LEF1 and β-catenin in > 50% of tumor cells). The diagnostic rate of LEF1 alone, β-catenin alone, and their combination were compared for each tumor type and all patients.

RESULTS: Compared to β-catenin, when LEF1 alone was used for diagnosis, the diagnostic rate increased by 46.16% for BA, 16.67% for SPN, and 11.25% for all patients, but decreased by 23.34% for DF. The combined use of β-catenin and LEF1 significantly increased the diagnostic ratio in BA (46.16%), SPN (16.67%), and all patients (21.25%), but only marginally in DF (3.33%). In terms of all WNT pathway tumors with CTNNB1 gene mutation encompassed by our study, statistical analysis revealed no significant difference between LEF1 alone and β-catenin alone. However, their combined application was highly significant (P = 0.001) .

CONCLUSION: While β-catenin is commonly used as a marker for WNT pathway tumors, its variable expression and localization can be challenging for diagnosis. Our study emphasizes the importance of LEF1 as a complementary marker to β-catenin in diagnosing BA, DF, SPN, and other WNT pathway tumors activated by exon 3 CTNNB1 gene mutation. The combined use of LEF1 and β-catenin enhances diagnostic accuracy and may help the identification of these tumor types.

PMID:39881334 | DOI:10.1186/s12957-025-03675-8

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Nevin Manimala Statistics

Statistical analysis plan for a pragmatic randomised controlled trial comparing enhanced acceptance and commitment therapy plus ( +) added to usual aftercare versus usual aftercare only, in patients living with or beyond cancer: SUrvivors’ Rehabilitation Evaluation after CANcer (SURECAN) trial

Trials. 2025 Jan 30;26(1):32. doi: 10.1186/s13063-025-08734-9.

ABSTRACT

BACKGROUND: The aim of the SURECAN trial is to evaluate a person-centred intervention, based on Acceptance and Commitment Therapy (ACT Plus ( +)), for people who have completed treatment for cancer with curative intent, but are experiencing poor quality of life. We present the statistical analysis plan for assessing the effectiveness and cost-effectiveness of the intervention in improving quality of life 1 year post randomisation.

METHODS AND DESIGN: SURECAN is a multi-centre, pragmatic, two-arm, partially clustered randomised controlled superiority trial comparing the effectiveness of ACT + added to usual care with usual aftercare. The target sample size is 344 (172 per arm), randomised centrally in a 1:1 ratio.

RESULTS: The primary outcome is the total score of the Functional Assessment of Cancer Therapy scale-General (FACT-G) at 52 weeks, analysed using a partially nested mixed-effects model with heteroskedastic error terms. Secondary outcomes include scores at 16 and 52 weeks: FACT-G subscales; Fear of Cancer Recurrence Inventory (FCR4); positive and negative Impact of Cancer scales (IOCv2); Hospital Anxiety and Depression scale (HADS); Chalder Fatigue Scale (CFQ); and physical activity, measured on a modified version of the Godin scale. Health economic analyses will determine the incremental cost-effectiveness ratio (ICER) in terms of quality-adjusted life years (QALYs) derived from the Euroqol 5-Dimension 5-Level (EQ-5D-5L) compared to usual care at 52 weeks.

DISCUSSION: This manuscript is the statistical analysis plan (SAP) and economic evaluation for the SURECAN trial. Any exploratory or post hoc analyses will be identified as such in the respective analysis report.

TRIAL REGISTRATION: The trial was prospectively registered.

ISRCTN: ISRCTN67900293. Registered on 09 December 2019.

PMID:39881331 | DOI:10.1186/s13063-025-08734-9

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Investigating impact of consulting midwives on maternal rights charter on perception of respectful maternity care and postpartum blues among postpartum women: a quasi-experimental study

BMC Med Ethics. 2025 Jan 29;26(1):15. doi: 10.1186/s12910-025-01164-x.

ABSTRACT

INTRODUCTION: Despite the existing reports on mistreatment and disrespectful maternal care, few studies have investigated interventions to mitigate this issue. The present study aims to assess the impact of consulting midwives on maternal rights charter on perception of respectful maternity care and postpartum blues among postpartum women in two hospitals in southern Iran.

METHODOLOGY: This quasi-experimental study was conducted on 437 postpartum women (217 mothers before the intervention and 220 mothers after the intervention) and 44 midwives working in the maternity ward of two hospitals affiliated to Bushehr University of Medical Sciences in 2023-2024. The hospitals were randomly divided into control and intervention groups. The mothers and midwives were selected using convenience and census sampling methods, respectively. Initially, the first sampling phase of postpartum women was conducted. Then, midwives in the intervention group received consultation on patient rights charter in groups of 3-4 individuals over three sessions. After the intervention, the second phase of sampling of postpartum women was conducted. Data collection tools included questionnaires assessing women’s perception of respectful maternity care and postpartum blues. The data were analyzed using descriptive and analytical statistical tests in SPSS 20.0.

RESULTS: After performing the intervention on midwives, the mean score of postpartum respectful maternity care from the perspectives of the mothers in the intervention and control hospitals were 91.08 ± 5.51 and 68.34 ± 10.81 respectively (P < 0.001). Also, the mean scores of postpartum blues in the intervention and control hospitals were 12.88 ± 4.66 and 14.85 ± 5.94 respectively (P = 0.007). Multivariable linear regression analysis revealed that consulting with midwives regarding the Maternal Rights Charter, led to an increase in respectful maternity care (β coefficient = 0.780, 95% C.I. = 19.796). ~ 24.541) and decreased postpartum blues (β coefficient = -0.172, 95% C.I. = -3.318 ~ -0.390) from the perspectives of the mothers.

CONCLUSION: Consulting midwives on patient rights charter was positively correlated with mothers’ perception of respectful maternity care and negatively correlated with postpartum blues, indicating the positive effect of intervention on increasing women’s satisfaction and reducing postpartum blues. It is recommended that this consultation be included in midwives’ continuing education programs.

CLINICAL TRIAL NUMBER: Not applicable.

PMID:39881329 | DOI:10.1186/s12910-025-01164-x

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Nevin Manimala Statistics

Evaluation of angular and positional changes of maxillary third molars following premolar extraction, molar distalization, and non-extraction treatments

BMC Oral Health. 2025 Jan 29;25(1):156. doi: 10.1186/s12903-025-05545-x.

ABSTRACT

BACKGROUND: To compare the effects of first premolar extraction, molar distalization, and non-extraction treatments on the angulation and vertical positions of maxillary second molars (MxM2s) and maxillary third molars (MxM3s). To our knowledge, this is the first study to compare the effects of three different treatment types on MxM3 simultaneously.

METHODS: Initial (T0) and final (T1) panoramic radiographs of three different patient groups were analyzed: first premolar extraction group (n = 26 patients, 52 MxM2, 52 MxM3), molar distalization group (n = 20 patients, 40 MxM2, 40 MxM3), and non-extraction group (n = 31 patients, 62 MxM2, 62 MxM3). Descriptive data, including growth pattern, crowding, overjet, overbite, and maxillary incisor inclination, were recorded. Angular changes of maxillary third molars (MxM3) relative to the Interorbital Plane (IOP) and Palatal Plane (PP), as well as changes in inclination and vertical position according to Archer’s classification, were also documented. Differences between T0 and T1 within the same group were assessed using the paired sample t-test and Wilcoxon signed-rank test. Comparisons between groups were evaluated with one-way analysis of variance (ANOVA) and Kruskal-Wallis H test. The threshold for statistical significance was set at p < .05.

RESULTS: IOP and PP values of MxM2 and MxM3 showed significant improvement in the extraction group (EG)(p < .001). The improvement in MxM3 IOP and PP values was not significant in the distalization group (DG)(p = .196 and p = .544, respectively). According to Archer’s classification, within-group comparisons revealed that the inclination and vertical position of MxM3 showed significant improvement in the EG, DG, and non-extraction groups (NEG)(inclination: p < .001 in EG, p = .032 in DG, p = .024 in NEG; vertical position: p < .001 in EG, p = .048 in DG, p < .001 in NEG). In between-group comparisons, the most significant improvement was observed in the EG. The number of MxM3 with vertical positions in Stages 1 and 2 at T1 were 19 in EG, 3 in DG, and 10 in NEG.

CONCLUSION: Premolar extraction has a positive effect on the angular and positional changes of MxM2 and MxM3. The changes in the inclination and vertical position of MxM3 between NEG and DG were not statistically significant.

PMID:39881326 | DOI:10.1186/s12903-025-05545-x

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Perceived healthiness of sugary drinks and related social norms among adults in five countries: evidence from the International Food Policy Study

Nutr J. 2025 Jan 29;24(1):19. doi: 10.1186/s12937-024-01063-8.

ABSTRACT

BACKGROUND: A better understanding of correlates of sugary drink consumption is essential to inform public health interventions. This study examined differences in perceived healthiness of sugary drinks and related social norms between countries, over time, and sociodemographic groups and associations with sugary drink intake.

METHODS: This study used annual cross-sectional data from the International Food Policy Study from 2018 to 2021 in Australia, Canada, the United Kingdom, the United States, and Mexico. Analyses examined perceived healthiness of eight beverage types and two types of perceived social norms (descriptive, injunctive) that discourage sugary drink consumption. The 24-item Beverage Frequency Questionnaire was used to estimate beverage intake in the past 7 days. Logistic regression models examined trends over time in odds of perceiving each beverage type as unhealthy and agreeing with social norms discouraging sugary drink consumption, across countries and sociodemographic characteristics. Negative binomial regressions examined associations between perceived healthiness, social norms and consumption.

RESULTS: Energy drinks, regular soft drinks, and diet soft drinks were most frequently perceived as unhealthy in all countries, while water and 100% juice were least frequently perceived as unhealthy. Participants in Mexico had higher odds of perceiving 100% juice, chocolate milk, and iced tea as unhealthy in 2021 compared to 2018 (AOR = 1.71 99%CI 1.10-2.64; AOR = 2.69, 99%CI 1.70-4.26; AOR = 1.79, 99%CI 1.15-2.76; respectively), with little change in other countries. Agreement with social norms discouraging consumption of sugary drinks was higher in Mexico than in other countries. Trends in social norms over time were mostly stable, except in Mexico where participants had higher odds of agreeing with both norms in 2020 compared to 2018 (AOR = 1.27, 99%CI 1.09-1.48 for a descriptive norm and AOR = 1.27 99%CI 1.09-1.49 for an injunctive norm). In most countries, perceiving a beverage as unhealthy and agreeing with social norms discouraging consumption of sugary drink were associated with lower sugary drink consumption, with varying strength of associations across countries and beverage types.

CONCLUSIONS: Shifts over time in social norms and perceived healthiness observed in Mexico and associations with intake of sugary drinks in most countries suggest that targeted interventions to change norms and perceptions could help reduce sugary drink consumption.

PMID:39881318 | DOI:10.1186/s12937-024-01063-8

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Impact of positive psychological capital and shared leadership on nurses’ organizational well-being: a descriptive survey study

BMC Nurs. 2025 Jan 29;24(1):109. doi: 10.1186/s12912-025-02687-9.

ABSTRACT

BACKGROUND: Organizational well-being is a critical issue that should be addressed within nursing organizations as it boosts the morale and work motivation of its members by enhancing their satisfaction and happiness.

AIM: This study aimed to evaluate the levels of positive psychological capital, shared leadership, and organizational well-being among nurses, and examine the impact of positive psychological capital and shared leadership on organizational well-being.

METHODS: A descriptive survey research design was used, involving 177 nurses with at least one year of work experience at highly specialized hospitals in Korea treating patients with severe conditions. Data were collected via an online survey from July 1 to August 31, 2023, using a questionnaire that included items on general characteristics, job-related characteristics, positive psychological capital, shared leadership, and organizational well-being. The collected data were analyzed using the SPSS 29.0 software, employing statistical measures such as frequency, percentage, mean, standard deviation, t-test, ANOVA, Pearson correlation coefficient, and hierarchical regression analysis.

RESULTS: The participants’ scores were 3.32 ± 0.51 out of 5 for organizational well-being, 4.12 ± 0.58 out of 6 for positive psychological capital, and 3.64 ± 0.59 out of 5 for shared leadership. Factors identified that influenced organizational well-being included positive psychological capital (β = 0.462, p < .001) and shared leadership (β = 0.442, p < .001), which explained 58% of the total variance in the model (F = 48.74, p < .001).

CONCLUSIONS: To improve the organizational well-being of nurses, it is essential to develop capacity-building and intervention programs that boost positive psychological capital and shared leadership. Achieving this goal necessitates not only the individual efforts of organizational members but also robust organizational support, engagement, and proactive management.

PMID:39881317 | DOI:10.1186/s12912-025-02687-9

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The influence of sociodemographic and health factors on adherence to home-based rehabilitation after fast-track total knee arthroplasty: secondary analysis of a randomized controlled trial

Disabil Rehabil. 2025 Jan 29:1-10. doi: 10.1080/09638288.2025.2458191. Online ahead of print.

ABSTRACT

PURPOSE: Adherence to home rehabilitation following total knee arthroplasty (TKA) is essential to reach optimal functional outcomes, especially in fast-track procedures. The aim of this study is to identify which sociodemographic and health factors significantly affect adherence in this context.

METHODS: This is a secondary analysis of a randomized controlled trial with 52 patients. Adherence was measured as the percentage of completed exercises. Two statistical analyses were performed, one on the entire population and another on the telerehabilitation group only, to study which factors significantly affects adherence.

RESULTS: The analysis included the 42 patients with adherence data (23 TRH, 19 control). In Analysis I (n = 42), six variables were statistically significant: history of depression (p = 0.00026), educational level (p = 0.00151), social support (p = 0.00157), treatment group (p = 0.0081), history of diabetes (p = 0.01153), and ASA score (p = 0.02752). In Analysis II (TRH, n = 23), three variables were significant: history of depression (p = 0.003), educational level (p = 0.006), and history of hypertension (p = 0.047).

CONCLUSION: There are sociodemographic and health factors affecting adherence to home rehabilitation post-TKA. Depression stands out as a negative factor, while high educational level and social support improve adherence. Telerehabilitation has positive effects and reduces the influence of social and economic factors.

PMID:39879639 | DOI:10.1080/09638288.2025.2458191

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EEG-derived brainwave patterns for depression diagnosis via hybrid machine learning and deep learning frameworks

Appl Neuropsychol Adult. 2025 Jan 29:1-10. doi: 10.1080/23279095.2025.2457999. Online ahead of print.

ABSTRACT

In the fields of engineering, science, technology, and medicine, artificial intelligence (AI) has made significant advancements. In particular, the application of AI techniques in medicine, such as machine learning (ML) and deep learning (DL), is rapidly growing and offers great potential for aiding physicians in the early diagnosis of illnesses. Depression, one of the most prevalent and debilitating mental illnesses, is projected to become the leading cause of disability worldwide by 2040. For early diagnosis, a patient-friendly, cost-effective approach based on readily observable and objective indicators is essential. The objective of this research is to develop machine learning and deep learning techniques that utilize electroencephalogram (EEG) signals to diagnose depression. Different statistical features were extracted from the EEG signals and fed into the models. Three classifiers were constructed: 1D Convolutional Neural Network (1DCNN), Support Vector Machine (SVM), and Logistic Regression (LR). The methods were tested on a dataset comprising EEG signals from 34 patients with Major Depressive Disorder (MDD) and 30 healthy subjects. The signals were collected under three distinct conditions: TASK, when the subject was performing a task; Eye Close (EC), when the subject’s eyes were closed; and Eye Open (EO), when the subject’s eyes were open. All three classifiers were applied to each of the three types of signals, resulting in nine (3 × 3) experiments. The results showed that TASK signals yielded the highest accuracies of 88.4%, 89.3%, and 90.21% for LR, SVM, and 1DCNN, respectively, compared to EC and EO signals. Additionally, the proposed methods outperformed some state-of-the-art approaches. These findings highlight the potential of EEG-based approaches for the clinical diagnosis of depression and provide promising avenues for further research. Additionally, the proposed methodology demonstrated statistically significant improvements in classification accuracy, with p-values < 0.05, ensuring robustness and reliability.

PMID:39879638 | DOI:10.1080/23279095.2025.2457999