Tag: statistics

Int J Prosthodont. 2023 Sep 19;0(0):2-30. doi: 10.11607/ijp.8744. Online ahead of print.

ABSTRACT

PURPOSE: To evaluate radiographic changes around six implants (Two posterior zygomatic and four conventional implants) used with fixed detachable restorations in patients with severe maxillary posterior resorption with either Polyether ether ketone (PEEK) or titanium frameworks.

MATERIALS AND METHODS: Twelve maxillary edentulous patients were rehabilitated with six implants, including two posterior zygomatic and 4 conventionally placed implants for each patient following all-on-six distribution, and opposing mandibular all-on-four implant retained fixed detachable prostheses. A two-stage surgical unloaded healing protocol was performed. According to framework and teeth materials, there were two groups; Group I: CAD-CAM milled framework from modified BioHPP PEEK, bonded to polymethylmethacrylate crowns. Group II: screw-retained CAD-CAM milled framework from titanium, bonded to zirconium crowns. Bone loss evaluation for six implants was performed using cone beam computed tomography at the time of insertion (T0), after one year (T1), and after three years (T2).

RESULTS: There was a statistically significant difference in bone loss between PEEK and titanium groups. Less bone loss in PEEK groups around anterior conventional implants at buccal surfaces (P =0.01), at mesial surfaces (P <0.001), at distal surfaces (P <0.001), and zygomatic implants at buccal surfaces (P =0.004), and at palatal surfaces (P =0.003).

CONCLUSIONS: Within the limitations of the study, the full-arch PEEK and titanium frameworks of fixed-detachable prostheses used with an All-on-Six distribution using zygomatic implants for rehabilitation of maxillary edentulous atrophied posterior arches was a promising treatment approach. Less bone loss was observed with the PEEK framework restorations combined with the PMMA crowns group.

PMID:37729478 | DOI:10.11607/ijp.8744

Cult Health Sex. 2023 Sep 20:1-12. doi: 10.1080/13691058.2023.2253882. Online ahead of print.

ABSTRACT

The formation of online communities instils a sense of connectedness which can ameliorate the mental health concerns that result from minority stressors for lesbian, gay, queer, intersex, asexual, and other diverse genders/sexualities (LGBTQIA+). The aim of this study was to explore how LGBTQIA + people communicate social and mental health concerns on TikTok. It was anticipated that factors affecting mental health, such as minority stressors and community connectedness, would be addressed by the videos collected. Engagement statistics, demographics and content analysis were used to describe the 50 most-viewed videos across the top five related hashtags: #genderidentity, #lgbtqawareness, #sexualidentity, #lgbtmentalhealth, and #transmentalhealth. The content analysis indicates that TikTok is used as a way for members of the LGBTQIA + community to connect with each other and enhance feelings of community connectedness, which research shows may buffer the effects of minority stressors. Engagement with social media can be especially beneficial for those who may not be able to connect in the real-world. Further interactions, such as analysis of the comment section, should be investigated to develop a fuller understanding of how LGBTQIA + TikTok users respond to these contents.

PMID:37729467 | DOI:10.1080/13691058.2023.2253882

Sci Transl Med. 2023 Sep 20;15(714):eadg8656. doi: 10.1126/scitranslmed.adg8656. Epub 2023 Sep 20.

ABSTRACT

Human diseases may be modeled in animals to allow preclinical assessment of putative new clinical interventions. Recent, highly publicized failures of large clinical trials called into question the rigor, design, and value of preclinical assessment. We established the Stroke Preclinical Assessment Network (SPAN) to design and implement a randomized, controlled, blinded, multi-laboratory trial for the rigorous assessment of candidate stroke treatments combined with intravascular thrombectomy. Efficacy and futility boundaries in a multi-arm multi-stage statistical design aimed to exclude from further study highly effective or futile interventions after each of four sequential stages. Six independent research laboratories performed a standard focal cerebral ischemic insult in five animal models that included equal numbers of males and females: young mice, young rats, aging mice, mice with diet-induced obesity, and spontaneously hypertensive rats. The laboratories adhered to a common protocol and efficiently enrolled 2615 animals with full data completion and comprehensive animal tracking. SPAN successfully implemented treatment masking, randomization, prerandomization inclusion and exclusion criteria, and blinded assessment of outcomes. The SPAN design and infrastructure provide an effective approach that could be used in similar preclinical, multi-laboratory studies in other disease areas and should help improve reproducibility in translational science.

PMID:37729432 | DOI:10.1126/scitranslmed.adg8656

Rev Assoc Med Bras (1992). 2023 Sep 18;69(9):e20230627. doi: 10.1590/1806-9282.20230627. eCollection 2023.

ABSTRACT

OBJECTIVE: This study purposed to evaluate preoperative two tumor markers, namely, carcinoembryonic antigen and carbohydrate antigen (CA)19-9, in colorectal cancer for anatomotopographic location with disease stage and to assess their utility for diagnostic staging purposes.

METHODS: The study retrospectively incorporated patients who had undergone surgery for colorectal cancer at our department in 2015-2018 and in whom carcinoembryonic antigen and CA19-9 tumor markers had been preoperatively analyzed. The obtained data were then statistically processed using R-project.

RESULTS: A total of 155 patients had been incorporated, of whom 96 (62%) were men and 59 (38%) were women. Rectum was the most common location (74 patients, 48%), and the least represented stage was IV (18, 12%). The marker carcinoembryonic antigen was obtained in all 155 cases, while CA19-9 was in 105. The median carcinoembryonic antigen was 3 (0.34-1104.25), and the median CA19-9 was 12 (0.18-840.00). A significance was recognized between median carcinoembryonic antigen and disease stage (p-value=0.016), with stages I, II, and III (medians 2, 3, and 2) different from stage IV (median 13), while no significance for CA19-9 was recognized (p-value=0.343). No significance between either marker and location (carcinoembryonic antigen: p=0.276; CA19-9: p=0.505) was detected. The testing was performed at a significance level of alpha=0.05.

CONCLUSION: This study revealed a significance between the marker carcinoembryonic antigen, but not CA19-9, and the disease stage, while no relationship of either of these markers with tumor location was found. Herewith, the study confirmed that higher carcinoembryonic antigen values may suggest the finding of more advanced forms of colorectal cancer and thus a worse prognosis of this malignant phenomenon.

PMID:37729380 | DOI:10.1590/1806-9282.20230627

Rev Assoc Med Bras (1992). 2023 Sep 18;69(9):e20230475. doi: 10.1590/1806-9282.20230475. eCollection 2023.

ABSTRACT

OBJECTIVE: Foreign body aspiration is one of the childhood emergencies that thoracic surgeons are interested in, and it can cause morbidity and mortality. Although the relationship between various behavioral problems related to children and foreign body aspiration has been investigated so far, there is no study investigating the relationship between maternal temperament and anxiety sensitivity. This study aimed to investigate the relationship between maternal emotional temperament, anxiety sensitivity, and foreign body aspiration.

METHODS: Mothers of 18 children with foreign body aspiration have been evaluated by a thoracic surgeon, and 18 healthy controls have also been included in the study. Maternal emotional temperament has been measured with the Temperament Evaluation of Memphis, Pisa, Paris, and San Diego – Auto questionnaire scale, and anxiety sensitivity has been measured with the Anxiety Sensitivity Index-3.

RESULTS: There has been no statistically significant difference between groups in terms of maternal emotional temperament and anxiety sensitivity. In the logistic regression analysis conducted to determine the predictors of foreign body aspiration, it is determined that the mother’s anxious temperament has predicted foreign body aspiration significantly.

CONCLUSION: As a result of the study, it can be concluded that mothers’ anxious temperament can be considered a risk factor for foreign body aspiration because it affects parenting skills and children’s ability to manage behavioral problems. Consistent results could be able to be obtained with studies including larger samples on the subject.

PMID:37729373 | DOI:10.1590/1806-9282.20230475

J Hand Surg Eur Vol. 2023 Sep 20:17531934231200349. doi: 10.1177/17531934231200349. Online ahead of print.

ABSTRACT

Hand surgeons have the potential to improve patient care, both with their own research and by using evidenced-based practice. In this first part of a two-part article, we describe key steps for the analysis of clinical data using quantitative methodology. We aim to describe the principles of medical statistics and their relevance and use in hand surgery, with contemporaneous examples. Hand surgeons seek expertise and guidance in the clinical domain to improve their practice and patient care. Part of this process involves the critical analysis and appraisal of the research of others.

PMID:37728884 | DOI:10.1177/17531934231200349

Eye Contact Lens. 2023 Sep 20. doi: 10.1097/ICL.0000000000001025. Online ahead of print.

ABSTRACT

OBJECTIVE: To investigate the changes in choroidal thickness and axial length after orthokeratology in adolescents with low-to-moderate myopia and to explore the relationship between choroidal thickness and axial length variation.

METHODS: Thirty eyes with low-to-moderate myopia were retrospectively studied, and optometric data were collected before and after 6 months of continuous orthokeratology. Axial length and choroidal and foveal thicknesses were measured using optical biometry and enhanced depth imaging-spectral domain optical coherence tomography, respectively.

RESULTS: Axial length in the low myopia group increased (P<0.001) after 6 months of orthokeratology, and the variation was greater than that in the moderate myopia group (P<0.05). The subfoveal choroidal thickness in low and moderate myopia groups increased (P<0.01), and the variation was greater in the moderate myopia group (P<0.05). Choroidal thickness in all seven measured spots increased, with the variation of subfovea, nasal 1 mm to fovea, and temporal 1 mm to fovea being statistically significant (P<0.001, P<0.05, and P<0.05). The change in axial length was negatively associated with subfoveal and average choroidal thicknesses (P<0.01).

CONCLUSION: Adolescents with moderate myopia presented better axial length control after 6 months of orthokeratology. The choroidal thickness of low and moderate myopic eyes increased, and the variation was more significant in moderate myopic eyes. The axial length control effects can be associated with an increase in the subfoveal and average choroidal thickness.

PMID:37728877 | DOI:10.1097/ICL.0000000000001025

Support Care Cancer. 2023 Sep 20;31(10):585. doi: 10.1007/s00520-023-08032-7.

ABSTRACT

PURPOSE: The present work investigated dietary changes amongst individuals living with and beyond cancer (LWBC) from before to during the pandemic. To identify those at greatest risk of unhealthy changes, it was further examined whether patterns varied by sociodemographic, health-related, and COVID-19-related characteristics.

METHODS: This longitudinal cohort study analysed data from 716 individuals LWBC participating in the Advancing Survivorship Cancer Outcomes Trial (ASCOT). Using data provided before and during the pandemic, changes in fruit and vegetable, snack, and alcohol intake were tested using mixed-effect regression models.

RESULTS: Fruit and vegetable (95%CI: – 0.30; – 0.04) and alcohol consumption (95%CI: – 1.25; – 0.31) decreased, whilst snacking increased (95%CI: 0.19; 0.53). Women and individuals with limited social contact were more likely to reduce fruit and vegetable intake during the pandemic. Women and individuals with poorer sleep quality, limited social contact, and shielding requirements and without higher education were more likely to increase snacking during the pandemic. Individuals with poorer sleep quality, poorer mental health, and regular social contact were more likely to decrease alcohol consumption during the pandemic.

CONCLUSIONS: Findings suggest decreased intake for fruit, vegetable, and alcohol consumption and increased snack intake in response to the pandemic amongst individuals LWBC. These changes appear to differ across various characteristics, suggesting the pandemic has not equally impacted everyone in this population. Findings highlight the need for targeted post-COVID strategies to support individuals LWBC most adversely affected by the pandemic, including women and socially isolated individuals. This encourages resources to be prioritised amongst these groups to prevent further negative impact of the pandemic. Whilst the findings are statistically significant, practically they appear less important. This is necessary to acknowledge when considering interventions and next steps.

PMID:37728860 | DOI:10.1007/s00520-023-08032-7

Updates Surg. 2023 Sep 20. doi: 10.1007/s13304-023-01638-w. Online ahead of print.

ABSTRACT

Surgical resection is the main treatment for proximal gastric cancer, but there is no consensus on its reconstruction. We carried out a meta-analysis to evaluate the effects of double-tract reconstruction (DTR) and double-flap technique (DFT) on postoperative quality of life in patients with proximal gastric cancer. Systematic searches of PubMed, Web of Science, EBSCO, and the Cochrane Library were performed. Literature for the last 5 years was searched without language restrictions. The cutoff date for the search was 12 April 2023. Literature and research searches were conducted independently by two researchers and data were extracted. Statistical analyses were performed using Review Manager (Revman) 5.4 software. Fixed models were used when heterogeneity was small and random-effects models were used for meta-analysis when heterogeneity was large. The study was registered with PROSPERO, CRD 42023418520. Surgical time was significantly shorter in the DTR group than in the DFT group (P = 0.03). There were no significant differences between DFT and DTR in terms of age, gender, pathological stage, preoperative body mass index, surgical bleeding, and perioperative complications. There was no statistically significant difference between the two groups in terms of reflux esophagitis and PPI intake, but DFT was superior to DTR in weight improvement at 1 year after surgery (P < 0.0001). Compared with DTR, DFT reconstruction is more demanding and time-consuming, but its postoperative nutritional status is better, so it should be the first choice for GI reconstruction in most patients with early proximal gastric cancer. However, DTR should be the best choice for patients who have difficulty operating.

PMID:37728858 | DOI:10.1007/s13304-023-01638-w

Obes Surg. 2023 Sep 20. doi: 10.1007/s11695-023-06796-9. Online ahead of print.

ABSTRACT

BACKGROUND: Contrary to the previously known concept of muscle mass decrease following bariatric metabolic surgery, changes in muscle strength have been poorly investigated in systematic reviews. In this meta-analysis, we evaluated changes in handgrip strength (HGS) and lean mass (LM) after undergoing bariatric metabolic surgery.

METHODS: A systematic literature review using the PubMed, Embase, and Cochrane Library databases was conducted in November 2022. Longitudinal studies reporting HGS change after bariatric metabolic surgery were eligible. Pooled estimates for changes in HGS, body mass index (BMI), LM, and fat mass (FM) were calculated. Changes from baseline to the point closest to 6 months postoperatively were analyzed in trials with multiple follow-up examinations. The risk of bias was assessed using the Joanna Briggs Institute critical appraisal checklist.

RESULTS: Three randomized controlled trials and seven prospective cohort studies involving 301 patients were included. Follow-up evaluations were conducted 6 months postoperatively in all trials except for two, whose follow-up visits were at 18 weeks and 12 months, respectively. Pooled analysis showed reduced BMI (- 10.8 kg/m²; 95% confidence interval: – 11.6 to – 9.9 kg/m²), LM (- 7.4 kg; – 9.3 to – 5.4 kg), and FM (- 22.3 kg; – 25.1 to – 19.6 kg) after bariatric metabolic surgery, whereas the change in HGS was not statistically significant (- 0.46 kg; – 1.76 to 0.84 kg).

CONCLUSION: Despite the decreased body composition parameters, including muscle mass, strength was not impaired after bariatric metabolic surgery; this indicates that bariatric metabolic surgery is an effective weight management intervention that does not compromise strength.

PMID:37728838 | DOI:10.1007/s11695-023-06796-9