Category: Statistics

J Dairy Res. 2021 Aug 12:1-5. doi: 10.1017/S002202992100056X. Online ahead of print.

ABSTRACT

Variations in the levels of acute phase proteins and lactoferrin in serum and milk for diagnosis of subclinical mastitis in dairy cows are described in this research paper. Milking animals from two organized dairy farms in Kerala, India, were screened by California Mastitis Test (CMT), Electrical Conductivity test (EC) and Somatic Cell Count (SCC) test to identify animals affected with sub clinical mastitis (SCM). The concentrations of acute phase proteins (APP) Haptoglobin (Hp), C- reactive protein (CRP), Albumin, Lactoferrin (Lf) and α- 1 acid glycoprotein (AGP) in milk and Hp, Albumin, Serum Amyloid A (SAA) and CRP in the serum of 40 normal cows and 40 cows affected with sub clinical mastitis were assessed. Solid phase ELISA was employed for assessment of all parameters except the albumin levels, for which spectrophotometry was used. The values of Hp in milk; and SAA, AGP and Lf in serum, were significantly elevated in the group with sub clinical mastitis. Such variations were found to be independent of the specific bacterial organism causing the disease. These results show that significant variations exist in the levels of acute phase proteins Hp, AGP and Lf in milk, and SAA in serum of animals affected with subclinical bovine mastitis that are not affected by specific bacterial etiology.

PMID:34382532 | DOI:10.1017/S002202992100056X

S Afr Med J. 2021 Apr 6;111(6):550-553.

ABSTRACT

The hyperinflammation seen as part of a dysregulated immune response to SARS-CoV-2 in its most severe form leads to acute respiratory distress syndrome (ARDS), multiorgan failure and death. Corticosteroid therapy targets this hyperinflammation, otherwise known as a cytokine storm. It is the only therapeutic agent to date with a mortality benefit, with clear guidelines from national and international health authorities guiding its use. Objectives. To compare severity-of-illness indices, survival, length of intensive care unit (ICU) stay and potential ICU complications in patients treated with different corticosteroid regimens (high-dose hydrocortisone, high-dose methylprednisolone and lower-dose dexamethasone). Methods. In this single-centre descriptive retrospective observational study of a cohort of patients with severe COVID-19 admitted to a COVID-dedicated ICU, we compared patients treated with the three different corticosteroid regimens. Results. In 242 cases we could not demonstrate any statistically or clinically significant difference in the outcome of patients with critical COVID-19 treated with high-dose intravenous hydrocortisone (n=88) or methylprednisolone (n=46) compared with a relatively lower dose of dexamethasone (n=108). The survival rates were 38.6%, 39.1% and 33.3%, respectively (p=0.68). Patients treated with methylprednisolone tended to have a shorter length of ICU stay (median (interquartile range) 6 (4 – 10), 4 (2 – 8) and 5 (2 – 8) days; p=0.015) and fewer episodes of nosocomial sepsis (47.7%, 32.6% and 48.1%; p=0.01). Conclusions. Hydrocortisone or methylprednisolone can be given as an alternative to dexamethasone in the management of critical COVID-19, and this is a feasible alternative, especially in resource-constrained settings.

PMID:34382564

J Obstet Gynaecol. 2021 Aug 12:1-7. doi: 10.1080/01443615.2021.1920007. Online ahead of print.

ABSTRACT

The research aimed to investigate the expression of human leukocyte antigen G (HLA-G) in cancer tissues and normal endometrium and the expression of HLA-G in the three different grades of Endometrial cancer, to determine if HLA-G expression is related with the diagnosis and grading of endometrial cancer. The expression of HLA-G protein was analysed in the primary tumour in 97 tissue samples obtained from endometrial cancer, in which 30 samples were at pathological Grade 1; 37 samples were at Grade 2; 27 samples were at Grade 3; and the other 5 samples were obtained from normal endometrium. The HLA-G protein level was measured by immunohistochemical method and analysed according to the clinicopathological parameters of patients. A statistically significant difference (p < .05) was observed in HLA-G expression between the cancerous tissue and the normal endometrium (p = .0007), and the histochemistry score (H-score) of the negative control was 0.05 ± 0.03 (mean ± SD). Statistically significant correlations were also observed between samples of pathological Grade 1 and Grade 2 (p = .0126), Grade 2 and Grade 3 (p = .0359), Grade 1 and Grade 3 (p = .0001). Endometrial cancer cells express higher levels of HLA-G probably to escape immune surveillance, and HLA-G expression level is related with the pathological grade of endometrial cancer. Therefore, HLA-G detecting and quantifying could possibly help diagnosing, grading and treatment of endometrial cancer.Impact statementWhat is already known on this subject? The expression of a member of the non-classical HLA antigens, HLA-G, is one of the main ways for tumour immune escape and progression. The significance of HLA-G in tumour biology has been intensively investigated (Carosella et al. 2015), and now it is widely acknowledged that HLA-G expression in tumours is highly linked with immune suppressive microenvironments, advanced tumour stage, poor therapeutic responses and prognosis (Lin and Yan, 2018). However, to our knowledge, no research has been conducted on the correlation between HLA-G expression and pathological grades of endometrial cancer.What do the results of this study add? Our study demonstrated that the expression of HLA-G plays an important role in the pathological grading of endometrial cancer.What are the implications of these findings for clinical practice and/or further research? Measuring the level of HLA-G expression to help pathological grading of endometrial cancer is important in determining the treatment of patients with endometrial cancer and studying the underlying mechanisms of the development of endometrial cancer, while proving or finding new targeted therapies inhibiting or modifying these processes still requires further investigation.

PMID:34382498 | DOI:10.1080/01443615.2021.1920007

Comb Chem High Throughput Screen. 2021 Aug 10. doi: 10.2174/1386207324666210811102109. Online ahead of print.

ABSTRACT

Advancement in the sequencing technology yields a huge number of genomes of a multitude of organisms in our planet. One of the fundamental tasks for processing and analyzing these sequences is to organize them in the existing taxonomic orders. <P> Method: Recently we proposed a novel approach, GenFooT, of taxonomy classification using the concept of genomic footprint (GFP). The technique is further refined and enhanced in this work leading to improved accuracies in the task of taxonomic classification on various benchmark datasets. GenFooT maps a genome sequence in a 2D coordinate space and extracts features from that representation. It uses two hyper-parameters, namely block size and number of fragments of genomic sequence while computing the feature. In this work, we propose an analysis for choosing values of those parameters adaptively from the sequences. The enhanced version of GenFooT is named GenFooT2. <P> Results and Conclusion: We have experimented GenFooT2 on ten different biological datasets of genomic sequences of various organisms belonging to different taxonomy ranks. Our experimental results indicate more than 3% improved classification performance of the proposed features with Logistic regression classifier than the GenFooT. We also performed the statistical test to compare the performance of GenFooT2 with the state-of-the-art methods including our previous method GenFooT. The experimental results as well as the statistical test exhibit that the performance of the proposed GenFooT2 is significantly better.

PMID:34382517 | DOI:10.2174/1386207324666210811102109

Neuropsychol Dev Cogn B Aging Neuropsychol Cogn. 2021 Aug 12:1-19. doi: 10.1080/13825585.2021.1962790. Online ahead of print.

ABSTRACT

Inclusion of Black participants in clinical research is a national priority. Mobile applications and remote data collection may increase study access for diverse populations. This study examined the reliability and feasibility of two mobile smartphone application-based cognitive measures in a diverse middle aged and older adult sample. Black (n = 44; M_age = 59.93) and non-Hispanic white (NHW; n = 50; M_age = 61.06) participants completed traditional paper-based neuropsychological testing and two app-based measures, Arrows and Number Match. Intraclass correlations demonstrated poor to moderate reliability (range: .417-.569) between performance on the app-based versions and performance on the traditional versions. Performance score differences by racial group were not statistically significant. Both Black and NHW participants rated the app-based measures as feasible and acceptable, though Black participants endorsed a stronger likelihood of future use. These findings add to the growing literature on remote cognitive testing .

PMID:34382482 | DOI:10.1080/13825585.2021.1962790

J Obstet Gynaecol. 2021 Aug 12:1-6. doi: 10.1080/01443615.2021.1931067. Online ahead of print.

ABSTRACT

The aim of this study was to evaluate the effectiveness of controlled ovarian stimulation (COS) using the letrozole-supplemented stimulation protocol in breast cancer (BC) patients prior to their cancer treatment. Sixty-one BC patients (Stages 0-3) who were referred to a university IVF unit for fertility preservation (FP) and underwent embryo and/or oocyte cryopreservation between 2008 – 2020 were included in this retrospective study. Time intervals between breast surgery and initial fertility consultation (IFC)/completion of FP procedures were evaluated. COS outcomes were assessed and compared between the early follicular phase (EFP) and the random-start (RS) protocols. The patients’ mean age was 33.3 ± 4.9 years. The mean time interval between breast surgery and IFC was 20.6 ± 11 (day, mean ± SD) and from IFC to completion of FP procedure was 14.7 ± 5.3. Overall, 9.1 ± 5.9 mature oocytes were obtained, with a peak serum oestradiol level of 388 ± 358 pg/mL. The number of oocytes obtained (11.5 ± 9.3 vs. 10.9 ± 6.9, p = .9) and maturation rates (84.3 ± 17.5% vs. 89.2 ± 11.7, p = .5) were not statistically different between the EPF and RS protocols. The study results support that oocyte or embryo freezing can be performed effectively in a limited time period with letrozole-supplemented COS protocols before the initiation of oncological treatments in breast cancer patients.Impact statementWhat is already known on this subject? Currently, embryo and oocyte freezing are considered the most established fertility preservation (FP) methods for newly diagnosed cancer patients.What do the results of this study add? This study reports the COS outcomes of newly diagnosed breast cancer patients for FP over a period of twelve years from a single IVF unit. The results support that a considerable number of oocytes can be harvested with letrozole-supplemented COS protocol, which appears to be an effective protocol for BC patients.What are the implications of these findings for clinical practice and/or further research? There is a need for additional studies evaluating long-term follow-up of patients with their pregnancy outcomes.

PMID:34382483 | DOI:10.1080/01443615.2021.1931067

Int Wound J. 2021 Aug 12. doi: 10.1111/iwj.13671. Online ahead of print.

ABSTRACT

Pressure ulcers (PUs) have a profound impact on individuals, with studies demonstrating that compared with similarly aged persons, those living with a PU have a significantly lower quality of life. The aim of this study was to explore the impact of the Shanley Pressure Ulcer Prevention Programme (SPUPP) on older persons’ knowledge of, and attitudes and behaviours towards, PU prevention. This was a multi-centre, open-label, randomised controlled trial. The population of interest was older persons living in the community who attended either a day care centre or a retirement group and were deemed to be at risk of PUs due to reduced mobility. Stratified random sampling was used to randomise based on days of attendance at day care centre/retirement group. Pretest and post-test were applied to the intervention and control groups. The SPUPP is a multimedia programme delivered using electronic media, hard copy materials, activities, and patient diaries and addresses the key tenets of PU prevention as described by the SKIN bundle. The programme contains five separate sessions delivered over 5 weeks. The impact of the SPUPP was assessed using the patient knowledge of and attitude and behaviour towards PU prevention instrument (KPUP). A total of 64 persons, 32 in each group, took part in the study. Of these, 75% (n = 48) were female, with a mean age of 81.9 years (SD: 5.56 years). Further, 68.8% (n = 44) were either overweight or obese and 40.6% (n = 26) were usually incontinent of urine. There were no differences between the intervention and control groups in mean scores during the pretest stage. However, at post-test, the mean scores for the intervention group were higher than the control group, 16.87 (SD: 1.88) versus 12.41 (SD: 3.21), respectively. For the post-test stage, mean differences between the two groups in favour of the intervention group (∆ = 4.46) were statistically significant, as t = 6.76, P = .0001, and equal variances were not assumed. The SPUPP impacted positively on knowledge scores of the participants and positively influenced attitudes and behaviours towards PU prevention. Thus, this research provides information regarding the potential to enhance patient involvement in PU prevention.

PMID:34382318 | DOI:10.1111/iwj.13671

Trauma Violence Abuse. 2021 Aug 12:15248380211036060. doi: 10.1177/15248380211036060. Online ahead of print.

ABSTRACT

BACKGROUND AND OBJECTIVE: Intimate partner violence (IPV) is a clinical and social problem globally, especially in the Middle East. This study aimed to analyze the prevalence of IPV and its types against women in the Middle East region.

METHOD: PubMed, Scopus, and Web of Science were searched in January 2020. From 1995 to 2020, all studies performed in the Middle East, investigating at least one type of abuse against women and written in English, entered the study. All included studies were appraised using Joanna Briggs Institute Checklist, which was adapted for prevalence studies. The random effect model of meta-analysis was performed using the Mantel-Haenszel method by comprehensive meta-analysis software. Each type of abuse as event rate with 95% CI was calculated for each variable. Heterogeneity was investigated using the I ² statistic test.

RESULTS: Fifty-five studies encompassing 138,692 participants were included in our meta-analysis. The rate of overall abuse was 26.3 (n = 55, 95% CI: [15.8, 40.5], p = .002). The highest rate of abuse in the included studies was reported for psychological abuse 48.6% (n = 46, 95% CI: [39.8, 57.5], p = .758). The rate of abuse for physical, economical, sexual, and injury were 28.4% (n = 53, 95% CI: [22.1, 35.7], p = .0001), 19% (n = 10, 95% CI: [9.8, 33.7], p = .0001), 18.5% (n = 45, 95% CI: [13.6, 24.6], p = .0001), and 18.4% (n = 5, 95% CI: [7.1, 40.2], p = 0.008), respectively. The overall abuse reported by World Health Organization Multi-Country Domestic Violence (DV)Questionnaire was 25.7% (n = 17, 95% CI: [18.4, 34.7], p = .0001). This value was 41.8% (n = 11, 95% CI: [29.7, 55], p = .223) for the Conflict Tactics Scale Questionnaire.

CONCLUSION: Although this review highlights the lack of or insufficient IPV data in some contexts and inconsistencies in defining and measuring IPV among studies, the evidence shows that a moderate to high pattern of abuse has been observed in the study population. Due to this region’s unique cultural-religious characteristics, it is urgent to reduce this phenomenon.

PMID:34382453 | DOI:10.1177/15248380211036060

Int J Urol. 2021 Aug 11. doi: 10.1111/iju.14664. Online ahead of print.

ABSTRACT

OBJECTIVE: To report perioperative, renal functional and oncologic outcomes for patients undergoing partial or radical nephrectomy for cT2 renal masses.

METHODS: Retrospective review of patients who underwent partial (n = 72) or radical nephrectomy (n = 379) for cT2 renal masses from 2000 to 2016. After propensity adjustment using inverse probability weighting, the following were compared by surgery (partial or radical nephrectomy): complications, renal function measured by estimated glomerular filtration rate as continuous and as <60 mL/min/1.73 m² at 1 and 3 years postoperatively and overall, metastases-free survival and cancer-specific survival in patients with renal cell carcinoma.

RESULTS: After propensity adjustment, clinical and radiographic features were well-balanced between groups. Overall and severe complications were more common for partial compared with radical nephrectomy, although not statistically significant (19 vs 13%, P = 0.14 and 4 vs 2%, P = 0.3, respectively). Estimated glomerular filtration rate change at 1 and 3 years was more pronounced in radical compared with partial nephrectomy (median -16 vs -5 and -14 vs -2, respectively, P < 0.001). A greater proportion of radical nephrectomy patients had an estimated glomerular filtration rate <60 at 1 and 3 years (55 vs 17% and 48 vs 17%, respectively, P < 0.01). In renal cell carcinoma patients, overall, metastases-free and cancer-specific survival were not significantly different between groups (median survivor follow up 7.1 years, interquartile range 3.6-11.4).

CONCLUSIONS: Partial nephrectomy appears to be a relatively safe and a potentially effective treatment for cT2 renal masses, conferring better renal functional preservation compared with radical nephrectomy. These data support continued use of partial nephrectomy for renal masses >7 cm in appropriately selected patients.

PMID:34382267 | DOI:10.1111/iju.14664

Sci Rep. 2021 Aug 11;11(1):16342. doi: 10.1038/s41598-021-95699-9.

ABSTRACT

The UK and Sweden have among the worst per-capita COVID-19 mortality in Europe. Sweden stands out for its greater reliance on voluntary, rather than mandatory, control measures. We explore how the timing and effectiveness of control measures in the UK, Sweden and Denmark shaped COVID-19 mortality in each country, using a counterfactual assessment: what would the impact have been, had each country adopted the others’ policies? Using a Bayesian semi-mechanistic model without prior assumptions on the mechanism or effectiveness of interventions, we estimate the time-varying reproduction number for the UK, Sweden and Denmark from daily mortality data. We use two approaches to evaluate counterfactuals which transpose the transmission profile from one country onto another, in each country’s first wave from 13th March (when stringent interventions began) until 1st July 2020. UK mortality would have approximately doubled had Swedish policy been adopted, while Swedish mortality would have more than halved had Sweden adopted UK or Danish strategies. Danish policies were most effective, although differences between the UK and Denmark were significant for one counterfactual approach only. Our analysis shows that small changes in the timing or effectiveness of interventions have disproportionately large effects on total mortality within a rapidly growing epidemic.

PMID:34381102 | DOI:10.1038/s41598-021-95699-9