Category: Statistics

Oral Surg Oral Med Oral Pathol Oral Radiol. 2023 Jun 22:S2212-4403(23)00516-3. doi: 10.1016/j.oooo.2023.06.009. Online ahead of print.

ABSTRACT

OBJECTIVE: We evaluated the effect of mandibular asymmetry on the trabecular structure of the mandible as measured through fractal analysis (FA).

STUDY DESIGN: We divided a sample of 105 patients with skeletal class I occlusion, cervical vertebral maturation CS6, and skeletal vertical dimension ratios within normal limits into right asymmetric, left asymmetric, and symmetric groups. We performed FA on 6 bilateral regions of interest on panoramic radiographs of the patients and calculated the mean fractal dimension (FD) for each region. We performed the Wilcoxon signed-rank and paired t tests to compare the significance of differences in FD between sides within each group and between groups for all regions. Statistical significance was established at P < .05.

RESULTS: We found statistically significant differences in mean FD values between the right and left condyles of the 2 asymmetric patient groups. The FD was greater in the left condyle of patients with right asymmetry and in the right condyle of patients with left asymmetry. The right condyle had a significantly greater FD in left asymmetric patients than in right asymmetric patients.

CONCLUSIONS: The results of FA indicate that asymmetry is characterized by an increase in the mean FD of the condyle that is responsible for the asymmetry. Fractal analysis can be a valuable diagnostic technique in distinguishing trabecular differences in the condylar areas of asymmetric individuals.

PMID:37516622 | DOI:10.1016/j.oooo.2023.06.009

Eur Urol Oncol. 2023 Jul 27:S2588-9311(23)00146-3. doi: 10.1016/j.euo.2023.07.004. Online ahead of print.

ABSTRACT

BACKGROUND: Men with high-risk prostate cancer undergoing surgery likely recur due to failure to completely excise regional and/or local disease.

OBJECTIVE: The first-in-human evaluation of safety, pharmacokinetics, and exploratory efficacy of IS-002, a novel near-infrared prostate-specific membrane antigen (PSMA)-targeted fluorescence imaging agent, designed for intraoperative prostate cancer visualization.

DESIGN, SETTING, AND PARTICIPANTS: A phase 1, single-center, dose-escalation study was conducted in 24 men with high-risk prostate cancer scheduled for robotic-assisted radical prostatectomy with (extended) pelvic lymph node dissection using the da Vinci surgical system.

OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: Adverse events (AEs), vital signs, complete blood count, complete metabolic panel, urinalysis, and electrocardiogram were assessed over a 14-d period and compared with baseline. The pharmacokinetic profile of IS-002 was determined. Diagnostic accuracy was assessed for exploratory efficacy.

RESULTS AND LIMITATIONS: AEs predominantly included discoloration of urine (n = 22/24; expected, related, grade 1). There were no grade ≥2 AEs. IS-002 C_max and area under the curve increased with increasing dose. Plasma concentrations declined rapidly in a biphasic manner, with the median terminal half-lives ranging from 5.0 to 7.6 h, independent of dose and renal function. At 25 μg/kg, the exploratory efficacy readouts for the negative and positive predictive values were, 97% and 45% for lymph nodes, and 100% and 80% for residual/locoregional disease detection, respectively.

CONCLUSIONS: IS-002 is safe and well tolerated, and has the potential to enable intraoperative tumor detection that could not be identified using standard imaging.

PATIENT SUMMARY: IS-002 is a new imaging agent that specifically targets the prostate-specific membrane antigen receptor. In this study, we tested IS-002 for the first time in men with high-risk prostate cancer undergoing surgery and found that IS-002 is safe, is cleared from the body quickly, and potentially allows identification of prostate cancer in areas that would not be identified by conventional white light imaging.

PMID:37516587 | DOI:10.1016/j.euo.2023.07.004

Nurs Open. 2023 Jul 29. doi: 10.1002/nop2.1959. Online ahead of print.

ABSTRACT

AIM: To know the attitudes towards sexuality of nursing students and those sociodemographic and cultural factors that can influence it.

DESIGN: An observational study was carried out on Nursing degree students. One hundred and eighteen nursing degree students who were going to take the sexual and reproductive health nursing course.

METHODS: A self-administered online questionnaire. This questionnaire had several parts specifically designed to collect sociodemographic variables. In order to determine the attitudes towards sexuality, the questionnaire based on the ATSS (Attitudes Towards Sexuality Scale). The Double Standard Scale (DSS) was also used. This scale evaluates double standards within the area of sexuality. The Rape Supportive Attitude Scale (RSAS), was included to determine beliefs about rape, rapists and their victims.

RESULTS: The ATSS shows a statistically significant association with religious beliefs (p = 0.005), with mean scores of 113.84 (SD = 9.81) for non-believers (no religion), 108.36 (SD = 15.68) for non-practicing believers and 102.32 (SD = 17.87) for believers (those who practice their faith). The mean score in the DSS shows a statistically significant association with alcohol consumption (p = 0.001). The mean score on the RSAS is statistically significantly associated with the place of residence (p = 0.050), the means were 44.32 (SD = 9.26) for those who lived in the city, 34.94 (SD = 19.21) if the place of residence was between 10,000 and 5000 inhabitants and 32.54 (SD = 15.01) if the family home was in a town with less than 5000 inhabitants.

CONCLUSION: Religious beliefs reduce liberalism and positive attitudes towards sexuality, whereas sporadic alcohol consumption increases them.

PATIENT OR PUBLIC CONTRIBUTION: No patient or public contribution.

PMID:37515451 | DOI:10.1002/nop2.1959

Clin Exp Dent Res. 2023 Jul 29. doi: 10.1002/cre2.770. Online ahead of print.

ABSTRACT

OBJECTIVES: The use of a toothbrush with radio frequency (RF) has shown to be of benefit regarding the reduction of plaque, calculus, and dental staining and improving teeth shade compared to conventional powered and manual toothbrushes.

AIM: To evaluate the efficacy of the RF toothbrush in the reduction of calculus accumulation and its effect on periodontal parameters as well as subject satisfaction as compared to an identical sham-tooth brush.

MATERIALS AND METHODS: Patients who are under a strict maintenance program were included. Patients were allocated to test (RF toothbrush) or control (sham) randomly and were examined at baseline, one and three months. Clinical photos were taken and a consequential calculus assessment via ImageJ software. Clinical assessment included the following: plaque index (PI), bleeding on probing (BOP), probing pocket depth (PPD), and recession (REC). Patient satisfaction was assessed via a questionnaire.

RESULTS: Fifty-eight patients (29 control, 29 test) were included. At baseline mean PPD, BOP, PI, REC, and calculus accumulation were similar between the groups. Mean buccal calculus was lower in the test group at one month 4.0% versus 6.7%, p < .05. Calculus accumulation within the groups was lower in the test group at 1 and 3 months when compared to baseline at the buccal aspect (2.8% vs. 8.9%, p < .05% and 3.8% vs. 8.9%, p < .05) and lingual aspect (6.7% vs. 16.5%, p < .05% and 8.9% vs. 16.5%, p < .05). No statistically significant results were found regarding periodontal parameters PPD, BOP, PI, and REC. No difference was found between groups regarding patient satisfaction.

CONCLUSION: RF seems to have an additive effect on preventing calculus accumulation on the buccal aspect of anterior mandibular teeth at 1 month. Nevertheless, at 3 months, no difference between the toothbrushes is seen regarding calculus formation and maintaining periodontal health (ClinicalTrials.gov, Identifier NCT04640857).

PMID:37515446 | DOI:10.1002/cre2.770

Omega (Westport). 2023 Jul 29:302228231192163. doi: 10.1177/00302228231192163. Online ahead of print.

ABSTRACT

We developed, implemented, and evaluated a participatory arts-based storytelling initiative called the Reflection Room project. Our aim was to investigate if visiting a Reflection Room, (1) creates opportunities for disclosing emotions and processing thoughts, (2) increases comfort discussing dying and death, and (3) supports advance care planning (ACP), conversations. In the pilot phase of the Reflection Room project, a Reflection Room was installed in 25 sites across Canada from 2016-2017. Data collection included reflection cards (n = 463), and surveys completed by visitors upon exiting a room (n = 271) and 3 months later (n = 50). Analysis involved theoretically driven coding, inductive content analysis, and descriptive statistics. We found reflections contained both emotional disclosures and reflective processing. Survey data indicated visiting a Reflection Room increased comfort in thinking and talking about dying and death as well as the likelihood of engaging in ACP. In the future, we will explore the extent to which the project fosters social connections and well-being.

PMID:37515417 | DOI:10.1177/00302228231192163

Eur J Clin Invest. 2023 Jul 28:e14067. doi: 10.1111/eci.14067. Online ahead of print.

ABSTRACT

BACKGROUND: Observational studies have suggested an association between lipid-lowering drugs and inflammatory bowel disease (IBD) risk. This study aimed to assess the causal influence of lipid-lowering agents on IBD risk using Mendelian randomization analysis.

METHOD: In a population of 173,082 individuals of European ancestry, 55 single-nucleotide polymorphisms were identified as instrumental variables for 6 lipid-lowering drug targets (HMGCR, NPC1LC, PCSK9, LDLR, CETP and APOB). Summary statistics for the genome-wide association study of IBD, ulcerative colitis (UC) and Crohn’s disease (CD) were obtained from the FinnGen consortium, Program in Complex Trait Genomics and UK Biobank. Inverse-variance weighted was employed as the primary MR method, and odds ratios (ORs) with 95% confidence intervals were reported as the results. Sensitivity analyses using conventional MR methods were conducted to assess result robustness.

RESULTS: Gene-proxied inhibition of Niemann-Pick C1-like 1 (NPC1L1) was associated with an increased IBD risk (OR [95% CI]: 2.31 [1.38, 3.85]; p = .001), particularly in UC (OR [95% CI]: 2.40 [1.21, 4.74], p = .012), but not in CD. This finding was replicated in the validation cohort. Additionally, gene-proxied inhibition of low-density lipoprotein receptor was associated with reduced IBD (OR [95% CI]: .72 [.60, .87], p < .001) and UC risk (OR [95% CI]: .74 [.59, .92], p = .006), although this result was not replicated in the validation cohort. Other drug targets did not show significant associations with IBD, UC or CD risk.

CONCLUSION: Inhibition of the lipid-lowering drug-target NPC1L1 leads to an increased IBD risk, mainly in the UC population.

PMID:37515404 | DOI:10.1111/eci.14067

Obes Rev. 2023 Jul 29:e13602. doi: 10.1111/obr.13602. Online ahead of print.

ABSTRACT

Bariatric surgery in people with obesity can lead to long-term remission of type 2 diabetes mellitus (T2DM) and a reduction in the incidence of macrovascular complications. The impact of bariatric surgery on microvascular complications is less clear. In this narrative review, we sought to evaluate the effect of bariatric surgery on microvascular complications in patients with and without diabetes. The risk of developing microvascular complications is increased in people with obesity, and this is amplified in those with T2DM. The impact of metabolic surgery on microvascular complications is limited to a subgroup analysis of studies or statistical modeling to predict the glycemia-independent effect of bariatric surgery. While bariatric surgery halts the progression of retinopathy in those with minimal retinopathy, it may worsen in those with advanced retinopathy. Bariatric surgery improves proteinuria and major renal outcomes, regardless of the severity of renal impairment. Bariatric surgery in patients with obesity with or without diabetes is associated with an improvement in neuropathic symptoms and regeneration of small nerve fibers. In conclusion, bariatric surgery is associated with an improvement in microvascular complications. Further studies are needed to elucidate the underlying mechanisms for the favorable effect of bariatric surgery on microvascular outcomes.

PMID:37515402 | DOI:10.1111/obr.13602

Neuroradiol J. 2023 Jul 28:19714009231193161. doi: 10.1177/19714009231193161. Online ahead of print.

ABSTRACT

OBJECTIVES: To assess the effect of the COVID-19 pandemic on the proportion of abnormal paediatric neuroimaging findings as a surrogate marker for potential underutilisation.

METHODS: Consecutive paediatric brain MRIs performed between March 27th and June 19th 2019 (T_baseline) and March 23rd and June 1st 2020 (T_pandemic) were reviewed and classified according to presence or absence and type of imaging abnormality, and graded regarding severity on a 5-point Likert scale, where grade 4 was defined as abnormal finding requiring non-urgent intervention and grade 5 was defined as acute illness prompting urgent medical intervention. Non-parametric statistical testing was used to assess for significant differences between T_pandemic vs. T_baseline.

RESULTS: Fewer paediatric MRI brains were performed during T_pandemic compared to T_baseline (12.2 vs 14.7 examinations/day). No significant difference was found between the two time periods regarding sex and age (T_baseline: 557 females (44.63%), 7.95 ± 5.49 years, T_pandemic: 385 females (44.61%), 7.64 ± 6.11 years; p = 1 and p = .079, respectively). MRI brain examinations during T_pandemic had a higher likelihood of being abnormal, 41.25% vs. 25.32% (p<.0001). Vascular abnormalities were more frequent during T_pandemic (11.01% vs 8.01%, p = .02), congenital malformations were less common (8.34% vs 12.34%, p = .004). Severity of MRI brain examinations was significantly different when comparing group 4 and group 5 individually and combined between T_baseline and T_pandemic (p = .0018, p < .0001, and p <.0001, respectively).

CONCLUSIONS: The rate of abnormality and severity found on paediatric brain MRI was significantly higher during the early phase of the pandemic, likely due to underutilisation.

PMID:37515380 | DOI:10.1177/19714009231193161

Microsc Res Tech. 2023 Jul 28. doi: 10.1002/jemt.24393. Online ahead of print.

ABSTRACT

Panax ginseng, a slow-growing perennial herb, is the most praised and popular traditional medicinal herb. Mountain-cultivated ginseng (MCG) and cultivated ginseng (CG) both belong to Panax ginseng C. A. Meyer. The market price and medical effects of this popular health product are closely related to its age. It is widely acknowledged that CG is typically harvested after 4-6 years of growth, but MCG is often collected after 10 years. Until now, the age identification of MCG or mountain wild ginseng (MWG) has remained a major challenge. In this study, we established a novel and rapid method for staining xylem vessels with phloroglucinol and identifying the “annual growth rings” of ginseng by utilizing a stereoscope, which serves as a reliable indicator of the age of MCG. Statistical analysis of the ring radius and the ring density of MCG aged from 1 to 20 years shows that the secondary xylem of MCG increases rapidly in the first 3 years but then gradually slows down from 4 to 10 years, and minor fluctuation is observed in the next 10 years. Meanwhile, the space between the growth rings (ring density) becomes increasingly small with age. This straightforward staining approach can reveal the age of MCG with remarkable clarity and can distinguish MCG from CG. RESEARCH HIGHLIGHTS: A novel rapid staining method for Panax ginseng was established. The age of mountain-cultivated ginseng (MCG) can be identified by microscopic techniques. MCG and cultivated ginseng (CG) can be discriminated by microstructure characteristics.

PMID:37515361 | DOI:10.1002/jemt.24393