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Nevin Manimala Statistics

Novel Performance Rating Instruments for Gynecological Procedures in Primary Care: A Pilot Study

Fam Med. 2023 Sep 11. doi: 10.22454/FamMed.2023.261011. Online ahead of print.

ABSTRACT

BACKGROUND AND OBJECTIVES: Improving training and confirming the acquisition of gynecological procedure skills for family physicians (FPs) is crucial for safe health care delivery. The objectives of this study were to (a) develop performance rating instruments for four gynecological procedures, and (b) pilot them to provide preliminary validity evidence using modern validity theory.

METHODS: Sixteen academic FPs and gynecologists participated in a modified Delphi technique to develop procedure-specific checklists (PSCs) for four procedures: intrauterine device insertion, endometrial biopsy, punch biopsy of the vulva, and routine pessary care. We modified a previously validated global rating scale (GRS) for ambulatory settings. Using prerecorded videos, 19 academic FPs piloted instruments to rate one first-year and one second-year family medicine resident’s performance. They were blinded to the level of training. We compared the mean scores for PSCs and GRS for each procedure using paired samples t tests and Cohen’s d to estimate effect sizes.

RESULTS: Consensus on items for the final PSCs was reached after two Delphi rounds. PSC and GRS scores were numerically higher for the second-year resident than the first-year resident for every procedure, with statistically significant differences for six of eight comparisons (P<.05). All comparisons demonstrated large effect sizes (Cohen’s d>0.8). Both instruments received high scores for ease of use by raters.

CONCLUSIONS: We developed novel performance rating instruments for four gynecological procedures and provided preliminary validity evidence for their use for formative feedback in a simulation setting. This pilot study suggests that these instruments may facilitate the training and documentation of family medicine trainees’ skills in gynecological procedures.

PMID:37725774 | DOI:10.22454/FamMed.2023.261011

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Resident Involvement in Curricular and Clinical Practice Change and Satisfaction With Training According to Length of Training in Family Medicine

Fam Med. 2023 Sep 11. doi: 10.22454/FamMed.2023.346131. Online ahead of print.

ABSTRACT

BACKGROUND AND OBJECTIVES: Most research in residency training has focused on quality improvement within a single program. We explored resident involvement in curricular and clinical practice change, the learning environment, and resident satisfaction in 3-year family medicine residencies compared to matched 4-year residencies.

METHODS: We used two surveys to capture data. One was for program directors, which assessed the level of resident involvement in curricular and practice transformation. The second was a resident survey, which asked residents to rate their involvement in curricular change and practice transformation, the learning environment, and satisfaction with training. Both were administered annually between 2013 and 2019. Response rates ranged from 84.6% to 100%.

RESULTS: Findings revealed no overall difference in resident involvement in curricular change, but the program director survey findings indicated that a higher proportion of residents in 4-year programs were using a broader diversity of approaches to working on quality improvement (QI) projects compared to those in 3-year programs. We also found statistical differences in the number of QI projects completed per year, with 34.1% completing three or more in 4-year programs compared to 13.3% in 3-year programs (P<.001). We found a positive correlation between resident involvement, learning environment, and satisfaction with training for both 3-year (range 0.489-0.666; P=.001) and 4-year residents (range 0.441-0.529; P=.001).

CONCLUSIONS: Four-year residents were involved in a greater number of quality improvement projects and had a more diverse profile of involvement than those in 3-year residency programs. Involvement in practice and curricular change and the learning environment were associated with greater levels of resident satisfaction with training in both 3-year and 4-year programs.

PMID:37725772 | DOI:10.22454/FamMed.2023.346131

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Enhancing Medical Students’ Understanding of Team-Based Care to Address Social Determinants of Health: A Case-Based Experience

Fam Med. 2023 Sep 8. doi: 10.22454/FamMed.2023.914274. Online ahead of print.

ABSTRACT

BACKGROUND AND OBJECTIVES: Social and structural factors play a critical role in driving inequitable health outcomes, resulting in the need for undergraduate medical education to include important care components such as team-based care to address social determinants of health. Research shows that learning strategies such as case-based initiatives are valuable opportunities to impact knowledge of population health, health disparities, and social determinants that impact care. The purpose of this study was to assess the impact of a clinical case-based experience on medical students’ self-efficacy and future intent to use the team-based care necessary to address social determinants of health.

METHODS: We used a retrospective analysis of program data from 640 third-year medical students who engaged in a case-based experience and small-group debriefing around the impact of team-based care and social determinants of health on patient care during their family medicine clerkship between July 2020 and April 2022.

RESULTS: We found a statistically significant improvement in students’ reported self-efficacy and intent to collaborate with other health care workers (team-based care) to address patient care needs in rural and urban underserved community settings.

CONCLUSIONS: Our students reported that a case-based experience coupled with a small-group debriefing was an effective method for teaching them how to use a team-based approach to address social determinants of health.

PMID:37725770 | DOI:10.22454/FamMed.2023.914274

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Nevin Manimala Statistics

Prediction of large-for-gestational age at 36 weeks’ gestation: two-dimensional vs three-Dimensional vs magnetic resonance imaging

Ultrasound Obstet Gynecol. 2023 Sep 19. doi: 10.1002/uog.27485. Online ahead of print.

ABSTRACT

OBJECTIVE: To compare the performance of two-dimensional ultrasound (2D-US) three-dimensional ultrasound (3D-US) and magnetic resonance imaging (MRI) at 36 weeks of gestation (WG) in the prediction of Large-for-Gestational-Age (LGA) fetuses defined as birthweight > 95th percentile in a high- and low-risk groups for macrosomia.

METHODS: This was a prospective observational study conducted between January 2017 and February 2019. Women with singleton pregnancy at 36 WG underwent simultaneously 2D-US, 3D-US, and MRI. By plotting the weight estimations and the birthweight on the growth curve, a percentile was obtained, and it was used for comparison. The study population was divided into high- and low-risk groups, according to at least one of the following risk factors: the presence of diabetes, suspicion of macrosomia during the third trimester (> 90th percentile at the ultrasound routine scan), obesity (body mass index, BMI, > 30 kg/m2 ), and excessive weight gain. The outcome was the measurement of the performance of each diagnostic modality in the prediction of birthweight > 95th percentile. Statistical analysis was performed by calculating the area under the receiver operating characteristic (ROC) curve (AUC), sensitivity, specificity, positive and negative predictive values for each modality.

RESULTS: Out of 988 patients, 965 were eligible: 533 (55.23%) in the high-risk group and 432 (44.77%) in the low-risk group. In the low-risk group, the AUCs were 0.982 for MRI, 0.964 for 2D-US, and 0.962 for 3D-US. No statistical significance was found among these three methods. In the high-risk group, the AUCs were 0.959 for MRI, 0.909 for 2D-US, and 0.894 for 3D-US. A statistically significant difference between MRI and both 2D-US (p = 0.002) and 3D-US (p = 0.002) was found. MRI had the highest sensitivity (65.79%) compared with both 2D-US (36.84%) and 3D-US (21.05%) ultrasound (p = 0.002 and p < 0.001, respectively). The 3D-US had the highest specificity (98.99%) compared to both methods (2D-US: 96.77%, p = 0.005, and MRI: 96.97%, p = 0.004).

CONCLUSION: At 36 WG, MRI performs better than 2D-US and 3D-US in predicting birthweight > 95th percentile at birth, especially in patients at high-risk for macrosomia, while 2D-US and 3D-US are comparable. For low-risk patients, the three modalities perform similarly. This article is protected by copyright. All rights reserved.

PMID:37725758 | DOI:10.1002/uog.27485

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Incremental yield of whole genome sequencing over chromosome microarray and exome sequencing for congenital anomalies in prenatal period and infancy: systematic review and meta-analysis

Ultrasound Obstet Gynecol. 2023 Sep 19. doi: 10.1002/uog.27491. Online ahead of print.

ABSTRACT

OBJECTIVE: Primarily to determine the incremental yield of Whole Genome Sequencing (WGS) over Chromosome Microarray Assessment (CMA) and/or Exome Sequencing (ES) in fetuses and infants with a congenital anomaly that was or could have been detectable on ultrasound prenatally. Secondly, to evaluate the turnaround time (TAT) and quantity of DNA required for testing using these pathways.

METHODS: OVID MEDLINE(R), EMBASE, Medline (Web of Science), Cochrane Library, and ClinicalTrials.gov databases were searched electronically (January 2010 to December 2022). Inclusion criteria were cohort studies including fetuses/infants with ≥n=3 cases of: (i) one or more congenital anomalies; (ii) an anomaly which was or would have been detectable on prenatal ultrasound and; (iii) exclusion of aneuploidy and pathogenic Copy Number Variants >50kb. Pooled incremental yield was determined using a random-effects model and heterogeneity was assessed statistically using Higgins’ I2 . Sub-analyses were performed based on pre- or postnatal presentation, multi-system anomalies and classification based upon NHS England prenatal (R21) ES inclusion criteria. PROSPERO 2022 CRD42022380483 RESULTS: Eighteen studies incorporating n=1284 cases were included, of which n=8 (44.4%) incorporating n=754 (58.7%) cases were prenatal cohorts and the remainder representing postmortem (postnatal evaluation), neonatal or infants with congenital structural anomalies. The incremental yield of WGS over QF-PCR/CMA was 26% (95% CI 18-36%, I2 =86%), 16% (9-24%, I2 =85%) and 39% (95%CI 27-51%, I2 =53%) for all, prenatal and postnatal cases. The incremental yields were optimal where sequencing was performed in line with NHS England prenatal ES criteria; 32% (22%-42%, I2 =70%). The incremental yield of Variants of Uncertain Significance (VUS) was 18% (95% CI 7-33%, I2 =74%). The yield of WGS over ES was non-significant at 1% (95% CI 0%-4%, I2 =47%). The pooled median TAT for WGS was 18 days (range: 1-912 days) and the quantity of DNA required for WGS versus CMA and ES was 100ng (±0) and 350ng (±50) p=0.03 respectively.

CONCLUSION: Whilst WGS investigation for congenital anomaly holds great promise, for the future, its’ incremental yield over ES is yet to be demonstrated. However, the laboratory pathway for WGS (compared to sequential QF-PCR/CMA/ES) requires less DNA with a potentially faster TAT. There was a relatively high rate of VUS. This article is protected by copyright. All rights reserved.

PMID:37725747 | DOI:10.1002/uog.27491

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Nevin Manimala Statistics

Automated Spot Counting in Microbiology

IEEE/ACM Trans Comput Biol Bioinform. 2023 Sep 19;PP. doi: 10.1109/TCBB.2023.3317339. Online ahead of print.

ABSTRACT

Biological samples are routinely analyzed for microbe concentration. The samples are diluted, loaded onto established host cell cultures, and incubated. If infectious agents are present in the samples, they form circular spots that do not contain the host cells. Each spot is assumed to be originated from a single microbial unit such as a bacterial colony forming unit or viral plaque forming unit. The undiluted sample concentration is estimated by counting the spots and back-calculating. Counting the number of spots by trained technicians is currently the gold standard but it is laborious, subjective, and hard to scale. This paper presents a new automated algorithm for spot counting, Localized and Sequential Thresholding (LoST). Validation studies showed that LoST performance was comparable with manual counting and outperformed several existing tools on images with overlapping spots. The LoST algorithm employs sequential thresholding through a two-stage segmentation and borrows information across all images from the same dilution series to fine-tune the count and identify right censoring. The algorithm increases the efficiency of the spot counting and the quality of the downstream analysis, especially when coupled with an appropriate statistical serial dilution model to enhance the undiluted sample concentration estimation procedure.

PMID:37725729 | DOI:10.1109/TCBB.2023.3317339

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Sleep quality and duration: A key to life satisfaction among military students

Mil Psychol. 2023 Sep 19:1-11. doi: 10.1080/08995605.2023.2259778. Online ahead of print.

ABSTRACT

Military service is a demanding profession that requires high physical preparedness and mental endurance. At the same time, the demands of military duties often require early rising and shortened sleep duration. Such a reduction in sleep can reduce physical and mental performance, and these changes can be reflected in life satisfaction. For this reason, soldiers’ life satisfaction is a crucial variable for their success and long-term service. This study examined the relationship between sleep quality, sleep duration, and life satisfaction in military medical students. The results on 35 military students showed that greater sleep quality corresponded to greater life satisfaction; this relationship was moderate and significant (r = -460, p = .005). Notably, participants (n = 17) who began to wake up without the use of an alarm clock reported an average of 11% higher life satisfaction than the participants who woke to an alarm clock; this difference between participants was statistically significant (p = .011, Cohen’s d = .911). Pre- and post-intervention showed that sleep hygiene education could be a suitable solution to prevent sleep deprivation and positively impact life satisfaction. Our findings emphasize the importance of increased sleep hygiene education, especially in preparing future military officers and during military exercises. Prioritizing sleep hygiene in these ways can significantly increase soldiers’ life satisfaction.

PMID:37725691 | DOI:10.1080/08995605.2023.2259778

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Increased Neighborhood Deprivation Is Associated with Prolonged Hospital Stays After Surgical Fixation of Traumatic Pelvic Ring Injuries

J Bone Joint Surg Am. 2023 Sep 19. doi: 10.2106/JBJS.23.00292. Online ahead of print.

ABSTRACT

BACKGROUND: The purpose of this study was to understand the role of social determinants of health assessed by the Area Deprivation Index (ADI) on hospital length of stay and discharge destination following surgical fixation of pelvic ring fractures.

METHODS: A retrospective chart analysis was performed for all patients who presented to our level-I trauma center with pelvic ring injuries that were treated with surgical fixation. Social determinants of health were determined via use of the ADI, a comprehensive metric of socioeconomic status, education, income, employment, and housing quality. ADI values range from 0 to 100 and are normalized to a U.S. mean of 50, with higher scores representing greater social deprivation. We stratified our cohort into 4 ADI quartiles. Statistical analysis was performed on the bottom (25th percentile and below, least deprived) and top (75th percentile and above, most deprived) ADI quartiles. Significance was set at p < 0.05.

RESULTS: There were 134 patients who met the inclusion criteria. Patients in the most deprived group were significantly more likely to have a history of smoking, to self-identify as Black, and to have a lower mean household income (p = 0.001). The most deprived ADI quartile had a significantly longer mean length of stay (and standard deviation) (19.2 ± 19 days) compared with the least deprived ADI quartile (14.7 ± 11 days) (p = 0.04). The least deprived quartile had a significantly higher percentage of patients who were discharged to a resource-intensive skilled nursing facility or inpatient rehabilitation facility compared with those in the most deprived quartile (p = 0.04). Race, insurance, and income were not significant predictors of discharge destination or hospital length of stay.

CONCLUSIONS: Patients facing greater social determinants of health had longer hospital stays and were less likely to be discharged to resource-intensive facilities when compared with patients of lesser social deprivation. This may be due to socioeconomic barriers that limit access to such facilities.

LEVEL OF EVIDENCE: Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

PMID:37725686 | DOI:10.2106/JBJS.23.00292

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Potential missed diagnoses of Crohn’s disease in tertiary care: impact on drug utilization and healthcare facilities use

Eur J Gastroenterol Hepatol. 2023 Sep 18. doi: 10.1097/MEG.0000000000002642. Online ahead of print.

ABSTRACT

BACKGROUND: A missed diagnosis of Crohn’s disease (CD) can delay treatment initiation with consequences on disease course.

AIMS: To measure the possible impact of missed diagnoses on drug utilization and access to healthcare facilities in a real-world cohort of CD patients.

METHODS: This retrospective observational study has been conducted on the regional administrative databases of Tuscany (Italy). We included patients with a first record of CD diagnosis between 06/11/2011 and 06/30/2016. Possible missed diagnosis (exposure) was defined by hospital presentation for gastrointestinal symptoms consistent with CD diagnosis that occurred in the 7-60 months preceding CD diagnosis. We compared exposed and non-exposed patients by assessing time-free from biologic drugs and from Emergency Department (ED) or hospital access. Hazard ratio (HR) was calculated using Cox models.

RESULTS: Among 3342 CD patients, 584 (17.5%) had a possible missed diagnosis. A risk of being treated with biologic drugs [adjusted HR (aHR): 2.17, 95% CI: 1.75-2.71] and of access to ED or hospitalization (aHR: 1.59, 95% CI: 1.44-1.75) was observed in patients with a possible missed diagnosis as compared to those without.

CONCLUSION: Tertiary care caregivers should be trained in the identification of early CD symptoms, to timely identify CD diagnosis and optimize pharmacological treatment and disease management.

PMID:37724478 | DOI:10.1097/MEG.0000000000002642

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Psychosocial Stressors at Work and Coronary Heart Disease Risk in Men and Women: 18-Year Prospective Cohort Study of Combined Exposures

Circ Cardiovasc Qual Outcomes. 2023 Sep 19:e009700. doi: 10.1161/CIRCOUTCOMES.122.009700. Online ahead of print.

ABSTRACT

BACKGROUND: Psychosocial stressors at work, like job strain and effort-reward imbalance (ERI), can increase coronary heart disease (CHD) risk. ERI indicates an imbalance between the effort and received rewards. Evidence about the adverse effect of combined exposure to these work stressors on CHD risk is scarce. This study examines the separate and combined effect of job strain and ERI exposure on CHD incidence in a prospective cohort of white-collar workers in Quebec, Canada.

METHODS: Six thousand four hundred sixty-five white-collar workers without cardiovascular disease (mean age, 45.3±6.7) were followed for 18 years (from 2000 to 2018). Job strain and ERI were measured with validated questionnaires. CHD events were retrieved from medico-administrative databases using validated algorithms. Marginal Cox models were used to calculate hazard ratios (HR) stratified by sex. Multiple imputation and inverse probability weights were applied to minimize potential threats to internal validity.

RESULTS: Among 3118 men, 571 had a first CHD event. Exposure to either job strain or ERI was associated with an adjusted 49% CHD risk increase (HR, 1.49 [95% CI, 1.07-2.09]). Combined exposure to job strain and ERI was associated with an adjusted 103% CHD risk increase (HR, 2.03 [95% CI, 1.38-2.97]). Exclusion of early CHD cases and censoring at retirement did not alter these associations. Among 3347 women, 265 had a first CHD event. Findings were inconclusive (passive job HR, 1.24 [95% CI, 0.80-1.91]; active job HR, 1.16 [95% CI, 0.70-1.94]; job strain HR, 1.08 [95% CI, 0.66-1.77]; ERI HR, 1.02 [95% CI, 0.72-1.45]).

CONCLUSIONS: In this prospective cohort study, men exposed to job strain or ERI, separately and in combination, were at increased risk of CHD. Early interventions on these psychosocial stressors at work in men may be effective prevention strategies to reduce CHD burden. Among women, further investigation is required.

PMID:37724474 | DOI:10.1161/CIRCOUTCOMES.122.009700