Biostatistics Commons^™

Malnutrisi Akut Berat Dan Determinannya Pada Balita Di Wilayah Rural Dan Urban, Titih Huriah, Laksono Trisnantoro, Fitri Haryanti, Madarina Julia

Kesmas

Malnutrisi akut berat merupakan malnutrisi yang paling serius yang memengaruhi balita dan merupakan masalah kesehatan utama di negara-negara berkembang. Malnutrisi telah meluas baik di perkotaan maupun perdesaan. Akar permasalahan malnutrisi di negara berkembang salah satunya adalah faktor sosial demografi. Tujuan penelitian untuk melihat perbedaan kejadian malnutrisi dan determinannya di area perkotaan dan pedesaan di Yogyakarta. Penelitian menggunakan desain potong lintang dengan responden adalah semua balita malnutrisi akut berat di Kabupaten Sleman (23 balita) dan Kota Yogyakarta (33 balita). Analisis data menggunakan statistik deskriptif dan inferensial. Penelitian dilaksanakan pada Bulan Desember 2012 - Februari 2013. Prevalensi balita malnutrisi akut lebih banyak …

Pendapatan Daerah, Pembiayaan Kesehatan, Dan Gizi Buruk Pada Balita: Studi Korelasi Tingkat Kabupaten/Kota, Septyana Choirunisa, Asri C. Adisasmita

Kesmas

Pendanaan kesehatan merupakan salah satu faktor penting dalam memengaruhi derajat kesehatan, termasuk salah satu masalah gizi pada balita yang disebut gizi buruk. Oleh karena itu, penelitian ini bertujuan mendeskripsikan pendapatan daerah dan pembiayaan kesehatan serta korelasinya dengan gizi buruk pada balita di tingkat kabupaten/kota di Indonesia tahun 2007. Penelitian ini merupakan studi ekologi/korelasi. Data pendapatan daerah dan pembiayaan kesehatan didapat dari Kementerian Keuangan, sedangkan data gizi buruk menggunakan data Riset Kesehatan Nasional tahun 2007. Sebanyak 250 kabupaten/kota yang diteliti dengan tidak mengikutsertakan kabupaten/kota yang datanya tidak lengkap atau tidak valid. Secara nasional, hanya persentase pendapatan asli daerah (PAD) per total …

Evaluasi Pelaksanaan Konseling Menyusui, Ika Murtiyarini, Dewi Marhaeni Diah Herawati, Irvan Afriandi

Kesmas

Salah satu upaya pemerintah dalam meningkatkan pemberian ASI di Indonesia adalah dengan memberikan konseling menyusui di pelayanan kesehatan. Penelitian perlu dilakukan untuk mengevaluasi pelaksanaan konseling menyusui di Kota Jambi dengan mengeksplorasi komponen input, activity, output, dan outcome. Penelitian ini merupakan penelitian kualitatif menggunakan strategi studi kasus. Penelitian dilakukan di empat puskesmas Kota Jambi pada bulan Desember 2013 sampai dengan Februari 2014. Pengumpulan data dilakukan dengan studi dokumen, observasi pelaksanaan konseling menyusui dan sarana prasarana, wawancara mendalam, serta focus group discussion. Analisis data yang digunakan adalah analisis tematik. Hasil penelitian menunjukkan bahwa komponen input dan activity kurang optimal seperti kurangnya sumber …

Pattern Of Household Drug Storage, Retno Gitawati

Kesmas

Household storage of pharmaceutical is world-widely practice, including in Indonesia. The purpose of this study was to obtain the pattern of medicine storage, the sources and reasons of medicine kept in households. Acrosssectional survey was conducted on October 2011, involving 250 adult household respondents, randomly selected from three subdistricts in North Jakarta, and have approved the written consents, and interviewed with structured questionnaire. Data were performed in univariate and bivariate analysis with chi square test. The majority of household (82%) stored drugs at home; analgesic-antipyretic nonsteroidal anti-inflammatory was the type of drugs kept by mostly (76.1%) of household. Out of …

Family Role Towards Smoking Behaviour Among Children In Jakarta, Wahyu Septiono, Dan Wolf Meyrowitsch

Kesmas

In Indonesia, the prevalence of smoking among 5 – 9 years old children has increased from 0.4% in 2001 to 2% in 2007. Among present adults smokers (>20 years), 17% started to smoke before the age of 13 years. This study identified factors related to smoking behaviour among 8 – 12 years old children in Jakarta, Indonesia using a questionnaire based cross sectional survey to obtain smoking status and possible predictors towards smoking habit. The total sample size was 1,097 students among 3rd - 7th grade students from schools in Jakarta. Self-reported smoking status was defined as whether the …

Asupan Karbohidrat Sebagai Faktor Dominan Yang Berhubungan Dengan Kadar Gula Darah Puasa, Aprilya Roza Werdani, Triyanti Triyanti

Kesmas

Peningkatan kadar gula darah memicu peningkatan produksi hormon insulin yang erat hubungannya dengan diabetes melitus. Berdasarkan data Riskesdas, prevalensi diabetes melitus di Indonesia meningkat dari 1,1% (2007) menjadi 2,1% (2013). Penelitian ini bertujuan untuk mengetahui faktor dominan yang berhubungan dengan kadar gula darah puasa pegawai pemberdayaan masyarakat & keluarga dan pegawai sekretariat daerah Kota Depok. Desain penelitian yang digunakan adalah potong lintang dan melibatkan 105 sampel. Variabel independen penelitian meliputi karakteristik individu, asupan zat gizi, hipertensi, aktivitas fisik, status gizi dan pengetahuan gizi. Analisis data yang dilakukan adalah analisis univariat, analisis bivariat menggunakan uji korelasi dan uji beda dua mean, …

Asupan Vitamin D Rendah Dan Keparahan Demam Berdarah Dengue Pada Anak Usia 1-14 Tahun, Nur Siyam, Siswanto Agus Wilopo, Mohammad Hakimi

Kesmas

Demam berdarah dengue (DBD) menimbulkan syok dan kematian. Penderita DBD di Yogyakarta sebagian besar usia 1 - 12 tahun dengan DBD parah. Asupan vitamin D rendah diasumsikan penyebab DBD parah. Asumsi ini perlu dibuktikan dengan menganalisis pengaruh asupan Vitamin D dan keparahan DBD. Rancangan penelitian adalah studi kasus kontrol. Penelitian di bangsal rawat inap anak dan instalasi catatan medik RS Jogja dan RSUP Dr. Sardjito. Kasus adalah anak usia 1 - 14 tahun dengan DBD grade III & IV, kontrolnya DBD grade I & II. Data asupan vitamin D diambil dengan food frequency questionnaire (FFQ). Variabel luar adalah indeks massa …

Fertilitas Remaja Di Indonesia, Mugia Bayu Raharja

Kesmas

Fertilitas remaja merupakan isu penting dari segi kesehatan dan sosial karena berhubungan dengan tingkat morbiditas serta mortalitas ibu dan anak. Tujuan penelitian adalah mempelajari faktor-faktor yang memengaruhi fertilitas remaja di Indonesia. Data yang digunakan adalah hasil Survei Demografi dan Kesehatan Indonesia tahun 2012 dengan unit analisis wanita usia subur yang termasuk dalam kategori usia remaja (15 - 19 tahun). Jumlah sampel sebanyak 6.927 responden. Analisis dilakukan dengan metode deskriptif dan inferensial menggunakan model regresi logistik biner. Hasil analisis menunjukkan bahwa satu dari sepuluh remaja wanita tersebut pernah melahirkan dan atau sedang hamil saat survei dilakukan; sebesar 95,2% dari remaja yang …

Genetic Predictors Of Metabolic Side Effects Of Diuretic Therapy, Jorge L. Del Aguila

Dissertations and Theses (Open Access)

Thiazide diuretics are a recommended first-line monotherapy for hypertension (i.e.SBP>140 mmHg or DBP>90 mmHg). Even so, diuretics are associated with adverse metabolic side effects, such as hyperlipidemia, hyperglycemia and hypokalemia which increase the risk of developing type II diabetes. This thesis used three analytical strategies to identify and quantify genetic factors that contribute to the development of adverse metabolic effects due to thiazide diuretic treatment. I performed a genome-wide association study (GWAS) and meta-analysis of the change in fasting plasma glucose and triglycerides in response to HCTZ from two different clinical trials: the Pharmacogenomic Evaluation of Antihypertensive Responses …

Vitamin D Status And Demographic And Lifestyle Determinants Among Adults In The United States (Nhanes 2001-2006), Yan Cao, Katie L. Callahan, Sreenivas P. Veeranki, Yang Chen, Ying Liu, Shimin Zheng

ETSU Faculty Works

This study looked at risk factors associated with vitamin D levels in the body among a representative sample of adults in the U.S., NHANES III (2001-2006) data were used to assess the relationship between several demographic and health risk factors and vitamin D levels in the body. The Baseline-Category Logit Model was used to test the association between vitamin D level and the potential risk factors age, education, ethnicity, poverty status, physical activity, smoking, alcohol, obesity, diabetes and total cholesterol with both genders. Vitamin D insufficiency and deficiency were significantly associated with age, race, education, physical activity, obesity, diabetes and …

Statistical Methods For Assessing Treatment Effects For Observational Studies., Kristopher C. Gardner 1984-

Electronic Theses and Dissertations

Though randomized clinical (RCTs) trials are the gold standard for comparing treatments, they are often infeasible or exclude clinically important subjects, or generally represent an idealized medical setting rather than real practice. Observational data provide an opportunity to study practice-based evidence, but also present challenges for analysis. Traditional statistical methods which are suitable for RCTs may be inadequate for the observational studies. In this project, four of the most popular statistical methods for observational studies: ANCOVA, propensity score matching, regression with the propensity score as a covariate, and instrumental variables (IV) are investigated through application to MarketScan insurance claims data. …

The Association Between The Il-1 Pathway, Isaac C. Wun

Dissertations and Theses (Open Access)

Cutaneous malignant melanoma (CMM) is a potentially lethal malignancy that warrants attention and further research, as it is known to that there is an increasing rate of incidence in theUnited States, and it is also known that exposure to UV light is its most crucial risk factor, and family history of melanoma is also an important risk factor. Melanoma is an aggressive and lethal cancer in humans. There are an estimated new 132,000 melanoma cases annually worldwide, and the trend has doubled in the past 20 years. However, attempts to treat melanoma have encountered considerable resistance and remained ineffective. The …

Pre-Maceration, Saignée And Temperature Affect Daily Evolution Of Pigment Extraction During Vinification, Ottorino L. Pantani, Federico M. Stefanini, Irene Lozzi, Luca Calamai, Alessandra Biondi Bartolini, Stefano Di Blasi

COBRA Preprint Series

Consumer demand for intensely coloured wines necessitates the systematic testing of pigment extraction in Sangiovese, a cultivar poor in easily extractable anthocyanins. Pre-fermentation (absent, cold soak pre-fermentation at 5 °C, cryomaceration by liquid N₂ addition), temperature (20 or 30 °C), and saignée were compared during vinification (800 kg). Concentrations of anthocyanins, non-anthocyanic flavonoids and SO₂-resistant pigments were recorded daily. A semiparametric Bayesian model permitted the kinetic description and the comparison of sigmoidal- and exponential-like curves. In total anthocyanins, saignée at 30 °C yielded a significant gain, later lost at drawing off; cryomaceration had little effect and cold …

Five Fundamental Gaps In Nature-Nurture Science, Peter J. Taylor

Working Papers on Science in a Changing World

Difficulties identifying causally relevant genetic variants underlying patterns of human variation have been given competing interpretations. The debate is illuminated in this article by drawing attention to the issue of underlying heterogeneity—the possibility that genetic and environmental factors or entities underlying a trait are heterogeneous—as well as four other fundamental gaps in the methods and interpretation of classical quantitative genetics: "Genetic" and "environmental" fractions of variation in traits are distinct from measurable genetic and environmental factors underlying the traits’ development; Standard formulas for partitioning variation in human traits are unreliable; Methods for translation from fractions of variation to measurable …

Set-Based Tests For Genetic Association In Longitudinal Studies, Zihuai He, Min Zhang, Seunggeun Lee, Jennifer A. Smith, Xiuqing Guo, Walter Palmas, Sharon L.R. Kardia, Ana V. Diez Roux, Bhramar Mukherjee

The University of Michigan Department of Biostatistics Working Paper Series

Genetic association studies with longitudinal markers of chronic diseases (e.g., blood pressure, body mass index) provide a valuable opportunity to explore how genetic variants affect traits over time by utilizing the full trajectory of longitudinal outcomes. Since these traits are likely influenced by the joint effect of multiple variants in a gene, a joint analysis of these variants considering linkage disequilibrium (LD) may help to explain additional phenotypic variation. In this article, we propose a longitudinal genetic random field model (LGRF), to test the association between a phenotype measured repeatedly during the course of an observational study and a set …

Short And Long-Term Lifestyle Coaching Approaches Used To Address Diverse Participant Barriers To Weight Loss And Physical Activity Adherence, Elizabeth M. Venditti, Judith Wylie-Rosett, Linda M. Delahanty, Lisa L. Mele, Mary A. Hoskin, Sharon Edelstein

GW Biostatistics Center

Background

Individual barriers to weight loss and physical activity goals in the Diabetes Prevention Program, a randomized trial with 3.2 years average treatment duration, have not been previously reported. Evaluating barriers and the lifestyle coaching approaches used to improve adherence in a large, diverse participant cohort can inform dissemination efforts.

Methods

Lifestyle coaches documented barriers and approaches after each session (mean session attendance = 50.3 +/- 21.8). Subjects were 1076 intensive lifestyle participants (mean age = 50.6 years; mean BMI = 33.9 kg/m2; 68% female, 48% non-Caucasian). Barriers and approaches used to improve adherence were ranked by the percentage of …

Raman Spectroscopy Of Blood Serum And Cerebrospinal Fluid And Multivariate Data Analysis For Alzheimer's Disease Diagnostics, Elena Ryzhikova

Legacy Theses & Dissertations (2009 - 2024)

The efficient and accurate diagnosis at the early stages of dementia is a key moment for effective treatment and productive research to find a new ways to combat the disease. It is especially true for Alzheimer's disease (AD) for which there is no effective cure, but several treatments are known to allow slowing down the degenerative processes. Alzheimer's disease (AD) displays only non-specific clinical symptoms of mental decline for decades after the initiation and is very challenging to differentiate even at the later stages when it becomes very aggressive. Despite the great need, current diagnostic tests are unable to diagnose …

Native Insect Herbivory Limits Population Growth Rate Of A Non-Native Thistle, James O. Eckberg, Brigitte Tenhumberg, Svata M. Louda

Brigitte Tenhumberg Papers

The influence of native fauna on non-native plant population growth, size, and distribution is not well documented. Previous studies have shown that native insects associated with tall thistle (Cirsium altissimum) also feed on the leaves, stems, and flower heads of the Eurasian congener Cirsium vulgare, thus limiting individual plant performance. In this study, we tested the effects of insect herbivores on the population growth rate of C. vulgare. We experimentally initiated invasions by adding seeds at four unoccupied grassland sites in eastern Nebraska, USA, and recorded plant establishment, survival, and reproduction. Cumulative foliage and floral herbivory …

Methods For Integrative Analysis Of Genomic Data, Paul Manser

Theses and Dissertations

In recent years, the development of new genomic technologies has allowed for the investigation of many regulatory epigenetic marks besides expression levels, on a genome-wide scale. As the price for these technologies continues to decrease, study sizes will not only increase, but several different assays are beginning to be used for the same samples. It is therefore desirable to develop statistical methods to integrate multiple data types that can handle the increased computational burden of incorporating large data sets. Furthermore, it is important to develop sound quality control and normalization methods as technical errors can compound when integrating multiple genomic …

Estimation Of Variation For High-Throughput Molecular Biological Experiments With Small Sample Size, Danni Yu

Open Access Dissertations

Motivation: In the quantification of molecular components, a large variation can affect and even potentially mislead the biological conclusions. Meanwhile, the high-throughput experiments often involve a small number of samples due to the limitation of cost and time. In such cases, the stochastic information may dominate the outcome of an experiment because there may not be enough samples to present the true biological information. It is challenging to distinguish the changes in phenotype from the stochastic variation.

Methods: Since the biological molecules have been quantified with different technologies, different statistical methods are required. Focusing on three types of important high-throughput …

Associations Of Smoking Status And Serious Psychological Distress With Chronic Obstructive Pulmonary Disease, Ke-Sheng Wang, Liang Wang, Shimin Zheng, Long-Yang Wu

ETSU Faculty Works

Background: Chronic obstructive pulmonary disease (COPD) has been a major public health problem due to its high prevalence, morbidity, and mortality. Smoking is a major risk factor for COPD, while serious psychological distress (SPD) is prevalent among COPD patients. However, no study focusing on the effect of SPD on COPD has been so far conducted, while few studies have focused on the associations of SPD and behavioral factors with COPD by smoking status.

Objectives: This study aimed to examine the associations of SPD and behavioral factors (such as smoking and physical activity) with COPD.

Materials and Methods: Weighted logistic regression …

Overcoming Shortage Of Pharmacists To Provide Pharmaceutical Services In Public Health Centers In Indonesia, Yuyun Yuniar, Max Joseph Herman

Kesmas

Indonesia masih menghadapi keterbatasan jumlah apoteker di puskesmas, sehingga pihak pemerintah daerah dan puskesmas harus berupaya mengatasi permasalahan tersebut. Penelitian ini bertujuan untuk menggambarkan ketersediaan dan distribusi tenaga pelayanan kefarmasian di puskesmas serta permasalahan dan alternatif pemecahannya. Data diambil dari hasil Riset Fasilitas Kesehatan (Rifaskes) tahun 2011I. Data kuantitatif tentang tenaga pelayanan kefarmasian di puskesmas dianalisis secara deskriptif berdasarkan regional. Data kualitatif sebagai pendukung diperoleh melalui wawancara mendalam dengan bagian kepegawaian dinas kesehatan dan apoteker empat puskesmas di Kota Bogor dan Bekasi, 3 kemudian dianalisis dengan metode analisis tema. Hasil analisis menunjukkan bahwa Sulawesi memiliki persentase puskesmas dengan tenaga apoteker …

Compound Identification Using Penalized Linear Regression., Ruiqi Liu

Electronic Theses and Dissertations

In this study, we propose a new method for compound identification using penalized linear regression. Compound identification is often achieved by matching the experimental mass spectra to the mass spectra stored in a reference library based on mass spectral similarity. In the context of the linear regression, the response variable is an experimental mass spectrum (i.e., query) and all the compounds in the reference library are the independent variables. However, the number of compounds in the reference library is much larger than the range of m/z values so that the data become high dimensional data with suffering from singularity. For …

Development Of Novel Methods To Minimize The Impact Of Sequencing Errors In The Next-Generation Sequencing Data Analysis, Xiaofeng Zheng

Dissertations and Theses (Open Access)

Next-generation sequencing (NGS) technology has become a prominent tool in biological and biomedical research. However, NGS data analysis, such as de novo assembly, mapping and variants detection is far from maturity, and the high sequencing error-rate is one of the major problems. .

To minimize the impact of sequencing errors, we developed a highly robust and efficient method, MTM, to correct the errors in NGS reads. We demonstrated the effectiveness of MTM on both single-cell data with highly non-uniform coverage and normal data with uniformly high coverage, reflecting that MTM’s performance does not rely on the coverage of the sequencing …

Progress Realized: Trends In Hiv-1 Viral Load And Cd4 Cell Count In A Tertiary-Care Center From 1999 Through 2011, Howard B. Gale, Manuel D. Rodriguez, Heather J. Hoffman, Debra A. Benator, Fred M. Gordin, Ann M. Labriola, Virginia L. Kan

Epidemiology Faculty Publications

Abstract

Accumulating evidence suggests that alterations in immune function may be important in the etiology of papillary thyroid cancer (PTC). To identify genetic markers in immune-related pathways, we evaluated 3,985 tag single nucleotide polymorphisms (SNPs) in 230 candidate gene regions (adhesion-extravasation-migration, arachidonic acid metabolism/eicosanoid signaling, complement and coagulation cascade, cytokine signaling, innate pathogen detection and antimicrobials, leukocyte signaling, TNF/NF-kB pathway or other) in a case-control study of 344 PTC cases and 452 controls. We used logistic regression models to estimate odds ratios (OR) and calculate one degree of freedom P values of linear trend (PSNP-trend) for the association …

Gulf-Wide Decreases In The Size Of Large Coastal Sharks Documented By Generations Of Fishermen, Sean P. Powers, F. Joel Frodrie, Steven B. Scyphers, J. Marcus Drymon, Robert L. Shipp, Gregory W. Stunz

University Faculty and Staff Publications

Large sharks are top predators in most coastal and marine ecosystems throughout the world, and evidence of their reduced prominence in marine ecosystems has been a serious concern for fisheries and ecosystem management. Unfortunately, quantitative data to document the extent, timing, and consequences of changes in shark populations are scarce, thwarting examination of long-term (decadal, century) trends, and reconstructions based on incomplete data sets have been the subject of debate. Absence of quantitative descriptors of past ecological conditions is a generic problem facing many fields of science but is particularly troublesome for fisheries scientists who must develop specific targets for …

A Study Of Cellular Calcium Dynamics In Culture Using Fluorescence Microscopy – A Statistical And Mathematical Approach, Richard Adekola Idowu

Doctoral Dissertations

Calcium in its ionic form is very dynamic, especially in excitable cells such as muscle and brain cells, moving from the high concentration exterior of the cell to much lower concentrations inside the cell, where calcium is used as a second messenger. In brain cells, and neurons especially, calcium is a key signaling ion involved in memory and learning with excitatory neurotransmitters such as glutamate turning neurons "on." Glutamate excites the neurons in part by causing large and dynamic changes in the intracellular calcium concentration. While these dynamics are essential for normal signaling in the brain, excessive and sustained elevations …

Genetic Susceptibility To Type 2 Diabetes: A Global Meta-Analysis Studying The Genetic Differences In Tunisian Populations, Rym Berhouma, S. Kouidhi, M. Ammar, H. Abid, T. Baroudi, H. Ennafaa, A. Benammar-Elgaaied

Human Biology Open Access Pre-Prints

The present study is the first meta-analysis to evaluate type 2 diabetes (T2D) - associated polymorphisms in cohorts originated from several Tunisian regions. In fact, we evaluated the effect of seven polymorphisms in the following genes; PPARg ( Pro12Ala), TNFα (-308A/G), ENPP1(K121Q), TCF7L2(rs7903146 C/T), MTHFR( C677T), ACE(I/D), CAPN10(3R/2R) on T2D risk, through a meta-analysis combining data of previous studies performed on Tunisian populations originating from the north, centre or south of the country. R statistics version 2.12.1 software was used to estimate the heterogeneity between studies. Pooled ORs were computed by the fixed-effects method of Mantel-Haenszel if no heterogeneity between …

Assessing Movement Of Fish Through Spectral Analysis Of Otolith Life History Scans, Renee Reilly Hoover

OES Theses and Dissertations

The ability to accurately measure movement timing across environmental gradients is fundamental for testing hypotheses in marine ecology that deal with ingress, egress, and migration of fish. Timing and patterns of movement have been estimated using life-history scans of the chemical signatures encoded in fish otoliths (ear stones). I provide a quantitative approach to examining life history scan data using spectral analysis, which retrospectively measures the movement timing for individual fish. Sagittal otoliths from juvenile Atlantic croaker (Micropogonias undulates) and adult black sea bass (Centropristis striata) were sampled using laser ablation inductively coupled plasma mass spectrometry …

Dna Methylation Arrays As Surrogate Measures Of Cell Mixture Distribution, Eugene Houseman, William P. Accomando, Devin C. Koestler, Brock C. Christensen, Carmen J. Marsit

Dartmouth Scholarship

There has been a long-standing need in biomedical research for a method that quantifies the normally mixed composition of leukocytes beyond what is possible by simple histological or flow cytometric assessments. The latter is restricted by the labile nature of protein epitopes, requirements for cell processing, and timely cell analysis. In a diverse array of diseases and following numerous immune-toxic exposures, leukocyte composition will critically inform the underlying immuno-biology to most chronic medical conditions. Emerging research demonstrates that DNA methylation is responsible for cellular differentiation, and when measured in whole peripheral blood, serves to distinguish cancer cases from controls.