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Nevin Manimala Statistics

Optimising theatre utilisation through Lean Six Sigma: A model for sustainable theatre utilisation improvement

J Perioper Pract. 2026 Feb 22:17504589261418823. doi: 10.1177/17504589261418823. Online ahead of print.

ABSTRACT

BACKGROUND: This quality improvement study was undertaken in the ophthalmology theatres at the Western Eye Hospital, Imperial College Healthcare NHS Trust, to address reduced capped theatre utilisation during the COVID-19 recovery period. Baseline utilisation was 75.8%, below the national Getting It Right First Time target of 85% for theatre touchtime utilisation by 2024/25. The aim was to identify the causes of underperformance and implement targeted interventions to improve theatre efficiency.

METHODS: A Lean Six Sigma DMAIC (Define, Measure, Analyse, Improve, Control) framework was used as the study design. Targeted interventions included increasing pre-assessment capacity to reduce under-booking, improving scheduling processes, reducing early finishes, and carrying out structured daily reviews of implant and equipment availability to minimise on-the-day cancellations. Multiple regression, factorial Design of Experiments, process capability analysis, Plan-Do-Study-Act cycles, and Statistical Process Control were used to analyse variation, test changes, and monitor performance.

RESULTS: The Analyse phase showed that early finishes, under-booking, and limited pre-assessment capacity were the main drivers of low utilisation, rather than commonly assumed factors such as late starts. Following the introduction of targeted interventions, capped theatre utilisation improved from 75.8% to 81%. Continuous monitoring through Plan-Do-Study-Act cycles and Statistical Process Control supported stability and informed further refinements.

CONCLUSIONS: This project shows that combining Lean Six Sigma methodology with advanced statistical analysis can deliver measurable improvements in theatre utilisation. The findings challenged long-held assumptions about the causes of inefficiency and highlight the importance of optimising scheduling processes and pre-assessment capacity. The model offers a transferable, scalable approach for other units aiming to enhance theatre efficiency and achieve sustainable operational improvements.

PMID:41723588 | DOI:10.1177/17504589261418823

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Nevin Manimala Statistics

Community Health Worker Perspectives on Building Patient-Provider Trust in Rural Communities of the San Joaquin Valley, California: A Qualitative Study

J Prim Care Community Health. 2026 Jan-Dec;17:21501319261425544. doi: 10.1177/21501319261425544. Epub 2026 Feb 22.

ABSTRACT

INTRODUCTION: Patient-provider trust is essential for effective healthcare delivery, influencing care engagement, disclosure, and adherence. Mistrust can delay diagnoses, reduce care utilization, and worsen outcomes. While cultural competence trainings aim to improve provider awareness, few studies examine how community health workers (CHWs) perceive and support trust-building in clinical care.

PURPOSE: To explore strategies for building and maintaining patient-provider trust from the perspectives of CHWs.

METHODS: Using a Community-Based Participatory Research approach, 39 CHWs from 3 rural-serving health centers in California participated in semi-structured focus groups. English and Spanish sessions were co-led by University researchers and trained CHW partners. Deductive thematic analysis was conducted in Dedoose, and descriptive statistics were generated using Stata 17.

RESULTS: CHWs identified 3 factors that shape patient-provider trust: (1) Power dynamics, such as provider-dominated conversations and time constraints, limit trust-building; (2) Communication that fosters emotional safety, including provider attentiveness and respectful verbal and nonverbal behaviors; and (3) Cultural respect and competence, emphasizing the importance of recognizing patients’ beliefs and providing language-concordant care.

DISCUSSION: CHWs offer community-informed insights on trust-building that can inform culturally responsive and equity-oriented interventions, particularly in rural and underserved regions. Future efforts should explore co-developing training modules with CHWs to strengthen patient-provider trust.

PMID:41723587 | DOI:10.1177/21501319261425544

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Nevin Manimala Statistics

Comparison of Premature Cause-Specific Mortality Among People With HIV in Florida Pre-(2019) and Early (2020) COVID-19 Pandemic: Disparities by Race and Ethnicity, Sex, Rurality, and Social Vulnerability

J Prim Care Community Health. 2026 Jan-Dec;17:21501319261422872. doi: 10.1177/21501319261422872. Epub 2026 Feb 22.

ABSTRACT

OBJECTIVE: Using State-level surveillance records we assessed disparities in premature mortality among people with HIV (PWH) in Florida during pre- (2019) and early COVID-19 pandemic (2020).

METHODS: We calculated age-standardized rates of years of potential life lost per 100 persons (aYPLL) stratified by sex, race and ethnicity, rural/urban residence, and social vulnerability index (SVI).

RESULTS: PWH in Florida during 2020 experienced a significant increase in aYPLL (2019: 29.0, 95% CI [28.1, 30.0]; 2020: 32.8, 95% CI [31.8, 33.9]). HIV/AIDS contributed the most aYPLL in 2020 (13.4, 95% CI [12.4, 14.4]), especially among females (15.8, 95% CI [15.2, 16.4]), rural communities (14.5, 95% CI [12.7, 17.6]), and high SVI communities (12.5, 95% CI [11.9, 13.2]). aYPLL due to external causes increased significantly from 2019 to 2020 (4.1, 95% CI [4.0, 4.3] vs 5.4, 95% CI [5.2, 5.5]), especially for females (3.6, 95% CI [3.3, 3.9] vs 7.8, 95% CI [7.4, 8.3]) and those living in low SVI communities (3.1, 95% CI [2.7, 3.8] vs 7.1, 95% CI [6.5, 8.1]). aYPLL due to COVID-19 was greatest for females (2.3, 95% CI [2.1, 2.6]) and residents of high SVI communities (2.0, 95% CI [1.9, 2.1]).

CONCLUSIONS: PWH experienced increased individual- and neighborhood-level disparities in premature mortality from HIV/AIDS from 2019 to 2020, especially among females and those in rural and socially vulnerable communities. External causes and COVID-19 were also associated with an increased premature mortality during this time frame, with disparities noted by sex and community social vulnerability. Pandemic planning should include targeted outreach programs which prepare for vulnerable populations’ healthcare needs and mitigate mortality.

PMID:41723585 | DOI:10.1177/21501319261422872

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Nevin Manimala Statistics

Comparison of Substances in Combined Oral Contraceptives Used in Acne Vulgaris, Hirsutism, Migraine, and Dysmenorrhea

Med Sci Monit. 2026 Feb 22;32:e949520. doi: 10.12659/MSM.949520.

ABSTRACT

Statistics from 2024 have shown that 50% of young women use contraception. Nowadays, it is not only used to prevent pregnancy. Positive effects of this treatment can be seen in cases of acne vulgaris, hirsutism, and painful menstruation. A controversial topic is the use of combined oral contraception (COC) in women with migraine with aura – it is contraindicated, but for headaches associated with the menstrual cycle, there is a chance of improvement, especially with the 28/0 regimen. This review assessed differences in the effects of substances contained in COC. Tablets containing ethinylestradiol in combination with drospirenone, levonorgestrel, desogestrel, chlormadinone acetate, dienogest, or lynestrenol were compared. The effects of different drug doses on body mass index (BMI), blood pressure, and the severity of adverse effects in women were considered. An individualized approach to patients is important to select COCs appropriate for the condition and at the same time minimize adverse effects, thereby improving quality of life. The progress in the development of newer COCs, such as an estetrol-containing pill with drospirenone, is promising as well.

PMID:41723577 | DOI:10.12659/MSM.949520

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Nevin Manimala Statistics

High-flow nasal therapy vs conventional oxygen therapy in mild COVID-19 hypoxaemia: a Bayesian reanalysis of the COVID-HIGH Trial

J Anesth Analg Crit Care. 2026 Feb 21. doi: 10.1186/s44158-026-00361-3. Online ahead of print.

ABSTRACT

BACKGROUND: Clinical effectiveness of high-flow nasal therapy (HFNT) over conventional oxygen therapy (COT) in patients with mild COVID-19-related acute hypoxaemic respiratory failure (AHRF) remains uncertain. The COVID-HIGH trial did not demonstrate statistically significant benefits of HFNT over COT. However, the trial was slightly underpowered, and the event rate lower-than-expected. Bayesian methods provide deeper insight by incorporating prior knowledge and quantifying uncertainty intuitively. This analysis aimed to quantify the probability of benefit or harm associated with HFNT, adopting a Bayesian approach.

METHODS: We performed a Bayesian reanalysis of the COVID-HIGH trial (NCT, which randomised 364 patients with PaO₂/FiO₂ between 200-300 mmHg to receive HFNT or COT. The primary outcome was escalation of respiratory support (continuous positive airway pressure, noninvasive ventilation or invasive mechanical ventilation) within 28 days. A key secondary outcome was clinical recovery at day 14. Bayesian logistic models with noninformative and informative priors were used to estimate the posterior probability of treatment effects.

RESULTS: Escalation of respiratory support occurred in 23.6% (HFNT) versus 30.2% (COT) (risk difference – 6.6%, 95% CI – 15.1 to 2.1; p = 0.14). Across a wide range of priors, the posterior probability mass on the beneficial side remained high, generally > 70%, while the proportion on the harm side remained consistently low at ≤ 6% for all models, underscoring a favourable benefit-risk profile. The acute respiratory failure meta-analysis model (OR 0.76, 95% CrI 0.60-0.97), the COVID-19 randomised evidence model (OR 0.76, 95% CrI 0.60-0.97), the COVID-19 observational evidence model (OR 0.60, 95% CrI 0.45-0.80), and the COVID-19 Bayesian meta-analysis mixed evidence model (OR 0.66, 95% CrI 0.52-0.86) showed posterior probability mass on the beneficial side of 70%-94%. Clinical recovery at day 14 occurred in 61.5% (HFNT) versus 53.3% (COT), with 61-73% of posterior probability mass on the clinical benefit side.

CONCLUSIONS: This Bayesian re-analysis of the COVID-HIGH trial suggests that HFNT likely reduces escalation of respiratory support and improves clinical recovery in patients with COVID-19 pneumonia and mild hypoxaemia, although the magnitude of benefit remains uncertain and sensitive to prior assumptions.

TRIAL REGISTRATION: The trial was prospectively registered in ClinicalTrials.gov on December 7, 2020 (NCT04655638).

PMID:41723547 | DOI:10.1186/s44158-026-00361-3

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Nevin Manimala Statistics

Association between dietary polyunsaturated fatty acids and cardiovascular disease in individuals with rheumatoid arthritis

Eur J Med Res. 2026 Feb 21. doi: 10.1186/s40001-026-04085-6. Online ahead of print.

ABSTRACT

BACKGROUND: Rheumatoid arthritis (RA) is an autoimmune disease marked by chronic inflammation, affecting the joints and increasing the risk of cardiovascular disease (CVD). The link between different polyunsaturated fatty acids (PUFAs) consumption and CVD in individuals with RA remains unclear. This study investigates the association between PUFAs intake and CVD prevalence among individuals with RA, using 2007-2018 National Health and Nutrition Examination Survey (NHANES) data.

METHODS: A cross-sectional analysis included 1,394 individuals with RA, and their PUFA intake was evaluated through 24-h dietary recall interviews. Logistic regression models evaluated the relationship between PUFA intake and CVD, adjusting for various covariates. Subgroup analyses and dose-response relationships were also explored.

RESULTS: In models adjusted for age, gender and race, higher eicosapentaenoic acid (EPA) intake showed an inverse association with CVD prevalence. However, this association was attenuated and did not remain statistically significant after further adjustment for socioeconomic, lifestyle and clinical factors. A higher intake of linoleic acid (LA) and n-6 PUFAs was linked to an increased prevalence of CVD. In contrast, no significant association was found between other n-3 PUFAs and CVD prevalence. An “L”-shaped dose-response pattern was observed in analyses adjusted for age, gender, and race, with a turning point at 64 mg/day, but this pattern was not observed in fully adjusted models. No significant nonlinear relationships were observed for LA, other n-3 PUFAs or n-6 PUFAs.

CONCLUSIONS: A higher intake of LA and n-6 PUFAs is positively associated with CVD prevalence. These findings suggest a potential link between specific dietary fatty acid composition and cardiovascular disease in RA, warranting further investigation to inform tailored nutritional recommendations.

PMID:41723518 | DOI:10.1186/s40001-026-04085-6

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Nevin Manimala Statistics

Contextual aspects of implementing an intervention to mitigate podoconiosis-related stigma in Musanze district, Rwanda

Int J Equity Health. 2026 Feb 21. doi: 10.1186/s12939-026-02791-5. Online ahead of print.

NO ABSTRACT

PMID:41723499 | DOI:10.1186/s12939-026-02791-5

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Nevin Manimala Statistics

Exploratory analysis of machine learning models for state and trait anxiety based on Spielberger questionnaire data in nursing students

BMC Med Educ. 2026 Feb 21. doi: 10.1186/s12909-026-08842-3. Online ahead of print.

NO ABSTRACT

PMID:41723488 | DOI:10.1186/s12909-026-08842-3

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Nevin Manimala Statistics

Health system responsiveness and its associated factors among patients with mental illness receiving outpatient care in public hospitals, Addis Ababa, Ethiopia, 2025: a facility-based cross-sectional study

BMC Health Serv Res. 2026 Feb 21. doi: 10.1186/s12913-026-14195-w. Online ahead of print.

ABSTRACT

BACKGROUND: Health system responsiveness encompasses the non-clinical aspects of healthcare, such as dignity, confidentiality, and communication that meet patients’ expectations. It is a core component of the World Health Organization’s framework for people-cantered care. Although responsiveness has been widely studied in general healthcare settings, evidence from mental health services remains limited, particularly in low- and middle-income countries such as Ethiopia.

OBJECTIVE: To assess health system responsiveness and its associated factors among patients with mental illness receiving outpatient care in public hospitals in Addis Ababa, Ethiopia, 2025.

METHODS: A facility-based cross-sectional study was conducted from March 1 to April 30, 2025, among 509 patients attending outpatient mental health services in selected public hospitals. Participants were selected using a multistage approach, with hospitals randomly chosen and participants within each hospital selected by systematic random sampling. Data were collected using a pretested questionnaire based on the WHO’s seven-domain responsiveness framework. Bivariate and multivariable logistic regression analyses were performed, and adjusted odds ratios (AORs) with 95% confidence intervals (CIs) were reported. Statistical significance was set at p < 0.05.

RESULT: Among the 509 participants, 276 (54.22%) reported good health system responsiveness. The dignity domain had the highest mean score, whereas the choice domain had the lowest. Higher odds of good responsiveness were observed among patients with health insurance (AOR = 1.89; 95% CI: 1.27-2.82), those who experienced shorter waiting times (< 30 mins: AOR = 3.36, 95% CI: 1.81-6.24; 30-60 mins: AOR = 2.00, 95% CI: 1.03-3.92), those who reported consistent availability of prescribed medications (AOR = 1.77; 95% CI: 1.12-2.83), and those attended by providers who introduced themselves (AOR = 1.71; 95% CI: 1.13-2.59). Conversely, rare (AOR = 0.40; 95% CI: 0.24-0.68) and absent (AOR = 0.18; 95% CI: 0.04-0.87) availability of medications were associated with significantly lower responsiveness.

CONCLUSION AND RECOMMENDATION: Responsiveness of outpatient mental health services was suboptimal. Health insurance coverage, shorter waiting times, consistent availability of prescribed medications, and provider self-introduction during consultations were statistically significant factors associated with good responsiveness. To improve responsiveness, efforts should focus on expanding health insurance coverage, minimizing patient waiting times, ensuring reliable medication availability, and encouraging respectful provider introductions.

PMID:41723465 | DOI:10.1186/s12913-026-14195-w

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Nevin Manimala Statistics

The Trial Bank initiative to promote trustworthy living evidence for medication safety (PROMISE) of children: design and pilot validation

BMC Med. 2026 Feb 21. doi: 10.1186/s12916-026-04709-y. Online ahead of print.

ABSTRACT

BACKGROUND: While medications are essential for preventing and treating disease, they can also cause harm. Evidence synthesis has been widely adopted for evaluating harms, but traditional methods are resource-intensive and may constrain timely decision-making. This study aims to validate a Trial Bank approach towards rapid evidence synthesis.

METHODS: A Trial Bank consisting of 13,650 RCTs of pharmaceutical or biopharmaceutical agents for children was established using artificial intelligence (AI) and humans, based on five databases (e.g., PubMed) up to February 14, 2023. The Trial Bank approach for evidence synthesis was validated in two ways: First, the percentage of trials within 1,996 Cochrane meta-analyses of drug safety in children that were also available in the Trial Bank was reported as the Trial Bank coverage (TBC). Second, the agreement of pooled effects from trials limited to those in the Trial Bank was compared to the full Cochrane meta-analyses in terms of their direction and statistical significance.

RESULTS: Of 1,020 trials included in the Cochrane meta-analyses, there was an overall 80.2% TBC, with an average TBC of 85.7% per meta-analysis (n = 1,996). With regards to agreement of meta-analytical results, use of only the Trial Bank trials achieved an agreement of 93.0% (95% confidence interval [CI]: 90.8% to 94.8%) in the direction, 95.8% (95%CI: 94.0% to 97.2%) in significance, and 89.1% (95%CI: 94.0% to 97.2%) in both direction and significance to Cochrane meta-analytical results for meta-analyses that had 2 or more trials (n = 668). Sensitivity analysis by removing unpublished trials from Cochrane meta-analyses showed slightly higher agreement (e.g., 90.7% in both direction and significance).

CONCLUSIONS: The Trial Bank approach demonstrated considerable coverage and agreement with Cochrane meta-analyses, suggesting it is a potentially feasible and efficient strategy for supporting living evidence synthesis of medication safety in children.

PMID:41723462 | DOI:10.1186/s12916-026-04709-y