Tag: statistics

Kathmandu Univ Med J (KUMJ). 2020 Oct.-Dec.;18(72):372-375.

ABSTRACT

Background Chronic obstructive pulmonary disease (COPD) exacerbation is a leading cause of frequent hospital admission. Globally, several studies have reported potential risk factors associated with COPD exacerbations which are largely unknown in Nepalese health care setting. Objective To identify the risk factors associated with hospital readmission within ninety days of discharge in acute COPD exacerbation. Method This is a hospital based retrospective cohort study conducted at Tribhuvan University Teaching Hospital. COPD patients admitted in respiratory ward from August 2019 to November 2019 were followed up till 90 days after discharge. Logistic regression analysis was performed at 95% Confidence Interval (CI) to identify risk factors for readmission in COPD exacerbation. Statistical analysis was performed using SPSS version 20.0. Result Of total 86 patients hospitalized for COPD, 42 (48.8%) had at least one subsequent readmission during post-discharge follow-up period of 90 days. Mean age of patients was 70.55±10.98 years. There were 45 (52.3%) males. Logistic regression analysis revealed preadmission domiciliary oxygen use (Odds Ratio (OR) 2.93; 95% CI 1.195- 7.202; p=0.019), admission in intensive care unit (ICU) (OR 3.060; 95% CI 1.145- 8.179; p=0.026), previous hospital admission for COPD exacerbation (OR 3.230; 95% CI 1.219-8.556; p=0.018), age (OR 0.946; 95% CI 0.905-0.988; p=0.012) and duration of hospital stay (OR 0.901; 95% CI 0.819-0.992; p=0.034) were independently associated with ninety day readmission in COPD patients. Conclusion Five clinical factors were found to be independently associated with COPD readmission in this study. Large multi-centre study at various health care levels is recommended to validate the potential risk factors in different populations and health care settings in Nepal.

PMID:34165094

Kathmandu Univ Med J (KUMJ). 2020 Oct.-Dec.;18(72):376-380.

ABSTRACT

Background Advantages due to immunization are numerous and cannot be avoided but at the same time pain inflicted on babies needs to be addressed when possible. Pain associated with immunization injections has often been overlooked when remedies are available. Objective To find out the effect of breastfeeding on relieving pain during immunization injection in infants. Method An experimental study was conducted at Immunization clinic of B.P. Koirala Institute of Health Sciences (BPKIHS). Total 124 subjects were divided randomly into two groups. Experimental subjects were allowed to breastfeed for 5-10 minutes before immunization while control group was immunized without breastfeeding. Interview Questionnaire was used to obtain demographic variables and measurements were obtained. Measures of pain was recorded using duration of cry and Modified Behavior Pain Scale, by Taddio et al. Data was analyzed by using SPSS 20.0 where variables were assessed with frequency tables, Pearson’s Chi-Square test, independent t test and Mann Whitney U test. Result The mean pain score in experimental group was 7.10 and in control group 7.56 which was statistically significant (p=0.001). The median duration of cry was significantly shorter in experimental group i.e. 25 seconds (IQR: 20-30) than control group 42.5 seconds (IQR: 30-61.5) (p < 0.001). Conclusion Breastfeeding before immunization is effective in reducing pain in infants.

PMID:34165095

Kathmandu Univ Med J (KUMJ). 2020 Oct.-Dec.;18(72):381-385.

ABSTRACT

Background Variation of hepatic artery is very frequent and may predispose the patients to inadvertent injury to the vessels during hepato-billiary surgery. With the advancement of new diagnostic, therapeutic and operative techniques for abdomen, the sound knowledge of variations of hepatic arterial system have become increasingly important for dealing clinicians, surgeons and interventional radiologists. Objective To study the variations of hepatic artery and to evaluate the possible clinical significances. Method A total of 104 images of abdominal computed tomography scans were used for this study. The origin and branching patterns of hepatic artery were recorded. After collecting the data, statistical analysis was done. Result The present study concluded that normal branching pattern of hepatic artery was seen in 86.54% cases, whereas 13.46% cases showed different types of variations. Among them, type II and IV pattern were seen in 0.96% in each, type VI in 1.93%, type VII in 2.87% and the most common variation type IX was seen in 3.85%. There were not a single case of type III, V, VIII and X recorded in this study. Addition to these, one of the variants was common hepatic artery originating from abdominal aorta, was seen in 1.93% of cases while the other variant is unnamed artery arising from superior mesenteric artery, was seen in 0.96% of cases. Conclusion The knowledge of the branching pattern of hepatic artery might be helpful for clinicians to the better understanding of the arterial supply of the liver and may reduce the risk of complications.

PMID:34165096

Kathmandu Univ Med J (KUMJ). 2020 Oct.-Dec.;18(72):329-332.

ABSTRACT

Background The global health community has emphasized the importance of reporting epidemiological data by age and sex groups in the COVID-19 pandemic. However, age and sex disaggregated data of COVID-19 cases and deaths are rarely reported. Such data are very crucial for public to make truly informed choices about their own diseases risk and also for governments for public policy response. Objective To assess age and gender difference among COVID-19 cases and deaths in Nepal. Method This is a retrospective study which uses public data on COVID-19 cases and deaths released by Ministry of Health and Population, Government of Nepal from January to November, 2020. The data analysis was carried out using SPPS software version 26. Result Nepal reported 233,452 confirmed cases and 1,566 deaths of COVID-19 from 23 January 2020 to 30 November 2020. We found statistically significant differences on COVID-19 cases by age and gender in Nepal with higher number of cases among males of economically active age groups (20-60 years). Similarly, we found significant difference in COVID-19 mortality with more death occurred among male group compared to female group and with highest number of deaths among the people of above 60 years. Furthermore, we found differences in cases and deaths among provinces. Conclusion The age and gender differences in COVID cases and deaths in Nepal indicates needs of considering age and sex groups seriously while planning for testing, case management and vaccination against COVID-19 infections in Nepal.

PMID:34165086

Kathmandu Univ Med J (KUMJ). 2020 Oct.-Dec.;18(72):349-353.

ABSTRACT

Background Pre-eclampsia is described as a pregnancy-specific syndrome that can affect virtually every organ system. The appearance of proteinuria remains an important diagnostic criterion. Proteinuria is an objective marker and reflects system-wide endothelial leak, which characterizes the pre-eclampsia syndrome. Objective To determine protein values using the spot urinary albumin/creatinine ratio amongst the pregnant women and to identify whether this test can be used as the investigation of choice for predicting pre-eclampsia in near future. Method A hospital based observational cross-sectional study conducted from February 2016 to August 2017. The study included pregnant women from 20-28 weeks of gestation. They were tested for spot urinary albumin and creatinine. They were all followed up till term, delivery and post partum. Result The mean age of the study patients was 28 years (N+335), the most common age group being 25 to 29 years (43.6%). Pregnant women with higher values of urinary albumin/creatinine ratio were found to develop hypertension compared to women with normal values of urinary albumin/creatinine ratio in the third trimester with insignificant difference (p < 0.283) statistically. Conclusion Microalbuminuria is one of the predictor of pre-eclampsia however it cannot be used as routine investigation for predicting pre-eclampsia in future; further studies in large scales are needed to prove whether urinary albumin/creatinine ratio can be utilized as predictor for pre-eclampsia or not.

PMID:34165090

Kathmandu Univ Med J (KUMJ). 2020 Oct.-Dec.;18(72):354-360.

ABSTRACT

Background Sex identification from the skeletal remains, is the first and the foremost step encountered by forensic experts. Hip bone being comparatively robust is resistant to damage and scores even in improperly preserved skeletons. It is also widely agreed that the greater sciatic notch (GSN) holds the greatest degree of sexual dimorphism. Objective To study the role of greater Sciatic Notch parameters in sex determination among Nepalese population by means of reconstructed Multi Slice Three-Dimensional Computed Tomography (MDCT) images. Method The CT images of individuals who underwent pelvic CT in the Department of Radiology, Dhulikhel Hospital were included in the study. Measurements of width, depth, angles and indices of greater sciatic notch were measured and calculated. Data were entered and analyzed using SPSS (Statistical Package for Social Sciences) version 25.0. Result There was a significant difference between means of all greater sciatic notch parameters (p > 0.001) between sex showing sexual dimorphism except depth (p=0.65). By using limiting point, 78.18% male and 83.64% female were correctly classified by using total width. Total angle, Posterior segment and Total width had sensitivity and specificity exceeding 80% and overall accuracy of 87% to 92% in all parameters except depth by receiver-operator characteristic curve analysis. Conclusion Application of 3D-CT virtual images in the present study helped us to easily quantify greater sciatic notch parameters. The important greater sciatic notch predictors for sex determination in Nepalese population were determined which would help forensic experts in ascertaining the sex of an unknown individual.

PMID:34165091

Elife. 2021 Jun 24;10:e68318. doi: 10.7554/eLife.68318. Online ahead of print.

ABSTRACT

The age dynamics of sexual partnership formation determine patterns of sexually transmitted disease transmission and have long been a focus of researchers studying human immunodeficiency virus. Data on self-reported sexual partner age distributions are available from a variety of sources. We sought to explore statistical models that accurately predict the distribution of sexual partner ages over age and sex. We identified which probability distributions and outcome specifications best captured variation in partner age and quantified the benefits of modelling these data using distributional regression. We found that distributional regression with a sinh-arcsinh distribution replicated observed partner age distributions most accurately across three geographically diverse data sets. This framework can be extended with well-known hierarchical modelling tools and can help improve estimates of sexual age-mixing dynamics.

PMID:34165078 | DOI:10.7554/eLife.68318

Elife. 2021 Jun 24;10:e68712. doi: 10.7554/eLife.68712. Online ahead of print.

ABSTRACT

β- and γ-cytoplasmic actins are ubiquitously expressed in every cell type and are nearly identical at the amino acid level but play vastly different roles in vivo. Their essential roles in embryogenesis and mesenchymal cell migration critically depend on the nucleotide sequences of their genes, rather than their amino acid sequence, however it is unclear which gene elements underlie this effect. Here we address the specific role of the coding sequence in β- and γ-cytoplasmic actins’ intracellular functions, using stable polyclonal populations of immortalized mouse embryonic fibroblasts with exogenously expressed actin isoforms and their ‘codon-switched’ variants. When targeted to the cell periphery using the β-actin 3’UTR, β-actin and γ-actin have differential effects on cell migration. These effects directly depend on the coding sequence. Single molecule measurements of actin isoform translation, combined with fluorescence recovery after photobleaching, demonstrate a pronounced difference in β- and γ-actins’ translation elongation rates in cells, leading to changes in their dynamics at the focal adhesions, impairments in actin bundle formation, and reduced cell anchoring to the substrate during migration. Our results demonstrate that coding sequence-mediated differences in actin translation play a key role in cell migration.

PMID:34165080 | DOI:10.7554/eLife.68712

Glob Health Action. 2021 Jan 1;14(1):1927328. doi: 10.1080/16549716.2021.1927328.

ABSTRACT

Background: Water represents the core of food-energy nexus and is vital for human survival. In developing countries, contaminated water and lack of basic water services undermine efforts to improve nutritional status and related health issues. In the rural areas of Central Africa, a majority of the population lacks access to improved water sources and has to devote considerable efforts to obtain water.Objectives: Using the following definition of water insecurity, i.e. it exists when access to adequate amount of safe and clean water does not occur all the times for the entirety of household members to lead a healthy and active life, the study aimed to develop and test a household-level experiential water insecurity scale for rural households in Central Africa.Methods: The research was conducted in three phases: 1) the formative data collection; 2) the scale development; and, 3) the scale testing. In the third Phase, the scale was tested with 250 women who were water managing person of their households. Statistical analysis included items reduction, reliability, as well as criterion and construct validity assessment. The testing led to a final scale of 17 statements (WATINE-17), covering three domains of water insecurity: 1) psychosocial distress; 2) quantity; 3) quality of water.Results: The scale showed an excellent reliability (Cronbach’s alpha = 0.92) and was significantly associated with lower frequency of water intake among women (p = 0.007, concurrent validity). In assessing WATINE-17’s predictive validity, it was found that water insecurity was positively related to food insecurity (p < 0.001) and the level of water insecurity was the highest among severely food insecure households [F (3, 246) = 22.469, p < 0.001].Conclusion: The WATINE-17 is able to capture key elements of water insecurity and can be used to monitor and evaluate SDG# 6 and water-related programs, such as WASH, in Central Africa.

PMID:34165038 | DOI:10.1080/16549716.2021.1927328

Leuk Lymphoma. 2021 Jun 24:1-10. doi: 10.1080/10428194.2021.1907374. Online ahead of print.

ABSTRACT

Breast and ovary have been described as rare but typical sites of presentation of Burkitt lymphoma (BL) in females, particularly after puberty. We revised a historic series of 44 lymphomas of the breast or the ovary in women diagnosed between 1973 and 2014 as BL. Fluorescence in situ hybridization (FISH) was applied to all, and array-based copy number analysis as well as expression profiling to a subset of those cases. Of the 42 cases evaluable for FISH, 19 cases showed an IG-MYC translocation but only 9 of those fulfilled the criteria of the current WHO classification for the diagnosis of BL. Those nine cases resembled BL of other sites with regard to molecular features. Our findings along with literature data suggest that breast and ovarian BL (1) seem to be rarer than hitherto assumed, (2) share typical molecular features with other BL, and (3) predominantly affect women in the fertile age.

PMID:34165048 | DOI:10.1080/10428194.2021.1907374