keyword
MENU ▼
Read by QxMD icon Read
search

Proper use of statistics

keyword
https://www.readbyqxmd.com/read/28634678/the-iliac-crest-in-forensic-age-estimation-evaluation-of-three-methods-in-pelvis-x-rays
#1
Viola Bartolini, Vilma Pinchi, Barbara Gualco, Stefano Vanin, Giusto Chiaracane, Giovanni D'Elia, Gian-Aristide Norelli, Martina Focardi
Age assessment in children and young adults is a relevant forensic issue. It is requested not only in evaluating criminal responsibility in youths without proper identification documents, often in relation to age thresholds, but also for release of a residency permit, and asylum seekers of minors. The analysis of the Risser sign and the iliac crest ossification process has been proposed as a useful tool for forensic age estimation. We evaluated the applicability of three different age estimation methods on a sample of 497 pelvic radiographs of Italian individuals between 10 and 25 years of age...
June 20, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28631584/clinical-characterization-of-italian-suicide-attempters-with-bipolar-disorder
#2
Bernardo Dell'Osso, Matteo Vismara, Cristina Dobrea, Laura Cremaschi, Benedetta Grancini, Chiara Arici, Beatrice Benatti, Massimiliano Buoli, Terence A Ketter, A Carlo Altamura
Introduction Bipolar disorder (BD) is a chronic, highly disabling condition associated with psychiatric/medical comorbidity and substantive morbidity, mortality, and suicide risks. In prior reports, varying parameters have been associated with suicide risk. OBJECTIVES: To evaluate sociodemographic and clinical variables characterizing Italian individuals with BD with versus without prior suicide attempt (PSA). METHODS: A sample of 362 Italian patients categorized as BD according to the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM IV-TR) was assessed and divided in 2 subgroups: with and without PSA...
June 20, 2017: CNS Spectrums
https://www.readbyqxmd.com/read/28631287/incidental-findings-of-implant-complications-on-postimplantation-cbcts-a-cross-sectional-study
#3
Danielle Clark, Horia Barbu, Adi Lorean, Eitan Mijiritsky, Liran Levin
BACKGROUND: Survival rates of dental implants are reported to be very high and seem to indicate minimal complications related to dental implants. PURPOSE: The aim of this report was to evaluate in a cross-sectional study the prevalence of implant positioning complications as appears in postimplantation Cone-Beam Computerized Tomography (CBCT) in two of the major imaging facilities in Bucharest, Romania. METHODS: Demographic and implant data was collected from two of the three main CBCT facilities in Bucharest, Romania...
June 20, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28629981/retrospective-quality-by-design-rqbd-applied-to-the-optimization-of-orodispersible-films
#4
Branca M A Silva, Sílvia Vicente, Sofia Cunha, Jorge F J Coelho, Cláudia Silva, Marco Seabra Reis, Sérgio Simões
The study demonstrates the application of QbD based on historical data for a product at a later development stage - retrospective QbD (rQbD). More specifically, it is investigated the root-cause for the observed slower drug release in Orodispersible Films (ODFs) during storage. Risk assessment tools were used to identify parameters affecting ODFs critical quality attributes, namely percent drug release and residual water content. The parameters room temperature, room relative humidity, drying temperature and mixing equipment were used in the statistical modeling of the available data...
June 16, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28627860/the-world-health-organization-disability-assessment-schedule-2-0-can-predict-the-institutionalization-of-the-patients-with-stroke
#5
Hsiang-Yueh Hu, Wen-Chou Chi, Kwang-Hwa Chang, Chia-Feng Yen, Reuben Escorpizo, Hua-Fang Liao, Shih-Wei Huang, Tsan-Hon Liou
BACKGROUND: The World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0) is a well-known questionnaire used to evaluate disability. We can not only evaluate disability but also obtain additional information by using the standardized WHODAS 2.0 scores. AIM: To predict the institutionalization of the patients with stroke by using the standardized WHODAS 2.0 scores. DESIGN: Observational study. SETTING: The data of 10,255 patients with stroke were acquired from the Data Bank of Persons with Disabilities (TDPD) in Taiwan...
June 19, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28623749/evaluating-the-safety-in-numbers-effect-for-pedestrians-at-urban-intersections
#6
Brendan Murphy, David M Levinson, Andrew Owen
Assessment of collision risk between pedestrians and automobiles offers a powerful and informative tool in urban planning applications, and can be leveraged to inform proper placement of improvements and treatment projects to improve pedestrian safety. Such assessment can be performed using existing datasets of crashes, pedestrian counts, and automobile traffic flows to identify intersections or corridors characterized by elevated collision risks to pedestrians. The Safety In Numbers phenomenon, which refers to the observable effect that pedestrian safety is positively correlated with increased pedestrian traffic in a given area (i...
June 14, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28619246/using-the-ornstein-uhlenbeck-process-to-model-the-evolution-of-interacting-populations
#7
Krzysztof Bartoszek, Sylvain Glémin, Ingemar Kaj, Martin Lascoux
The Ornstein-Uhlenbeck (OU) process plays a major role in the analysis of the evolution of phenotypic traits along phylogenies. The standard OU process includes random perturbations and stabilizing selection and assumes that species evolve independently. However, evolving species may interact through various ecological process and also exchange genes especially in plants. This is particularly true if we want to study phenotypic evolution among diverging populations within species. In this work we present a straightforward statistical approach with analytical solutions that allows for the inclusion of adaptation and migration in a common phylogenetic framework, which can also be useful for studying local adaptation among populations within the same species...
June 12, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28616409/awareness-and-perceptions-regarding-common-cancers-among-adult-population-in-a-rural-area-of-puducherry-india
#8
Arumugam Mariappan Veerakumar, Sitanshu Sekhar Kar
BACKGROUND: Awareness regarding cancer signs and symptoms and their screening and treatment method was low in India. OBJECTIVES: To assess the awareness level of common cancers, perception regarding prevention and treatment of common cancers, association between sociodemographic variables with the awareness level of common cancers in the adult population. MATERIALS AND METHODS: A cross-sectional study was conducted among 299 adults from the field practice areas of Our Rural Health Centre, Puducherry, during April-May 2014...
2017: Journal of Education and Health Promotion
https://www.readbyqxmd.com/read/28614172/the-relationship-between-the-number-of-intersections-of-staple-lines-and-anastomotic-leakage-after-the-use-of-a-double-stapling-technique-in-laparoscopic-colorectal-surgery
#9
SeungHun Lee, ByungKwon Ahn, SeungHyun Lee
PURPOSE: Laparoscopic intracorporeal colorectal anastomosis with double stapling technique is difficult because of unsuitable cutting angle in narrow pelvic cavity. For reasons of tilted and long linear staple line of rectal stump, circular anastomotic plane can make multiple intersections. The present study was designed to assess whether multiple intersections after double stapling technique is the risk factor of anastomotic complication in laparoscopic colorectal surgery. MATERIALS AND METHODS: In total, 128 consecutive left colon and rectal cancer patients who underwent laparoscopic rectal resection with double stapling technique were enrolled in this study...
June 13, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28612699/coffee-berry-borer-in-conilon-coffee-in-the-brazilian-cerrado-an-ancient-pest-in-a-new-environment
#10
C M Oliveira, M J Santos, R F Amabile, M R Frizzas, G F Bartholo
The aim of this study was to verify the occurrence of the coffee berry borer, Hypothenemus hampei (Ferrari), and to evaluate the population fluctuation of the pest in the Brazilian Cerrado (Federal District). The study was conducted, between November 2014 and October 2015, at Embrapa Cerrados (Planaltina/DF, Brazil) in an irrigated conilon coffee production area. In November 2014, 120 samples (ten berries/sample) were collected from berries that had fallen on the ground from the previous harvest. Between November 2014 and October 2015, insects were collected weekly, using traps (polyethylene terephthalate bottles) baited with ethyl alcohol (98 GL), ethyl alcohol (98 GL) with coffee powder, or molasses...
June 14, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28610809/an-evaluation-of-touchscreen-versus-keyboard-mouse-interaction-for-large-screen-process-control-displays
#11
Benjamin Noah, Jingwen Li, Ling Rothrock
The objectives of this study were to test the effect of interaction device on performance in a process control task (managing a tank farm). The study compared the following two conditions: a) 4K-resolution 55" screen with a 21" touchscreen versus b) 4K-resolution 55″ screen with keyboard/mouse. The touchscreen acted both as an interaction device for data entry and navigation and as an additional source of information. A within-subject experiment was conducted among 20 college engineering students. A primary task of preventing tanks from overfilling as well as a secondary task of manual logging with situation awareness questions were designed for the study...
October 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28610408/knowledge-and-awareness-about-cervical-cancer-vaccine-hpv-among-parents-in-sharjah
#12
Ahmad Saqer, Shaymaa Ghazal, Hiba Barqawi, Juman Adnan Babi, Ranya AlKhafaji, Mohamed Mohsen Elmekresh
Background and aim: Cervical cancer (CC) is the 7th most common cancer worldwide. It is the 4th most common cancer in females causing 7.5% of all female cancer deaths. Human Papilloma Virus (HPV) infection is the leading cause of CC and other diseases worldwide. Despite several measures taken to reduce the risk of infection with HPV, the most effective method remains the HPV vaccine. The aim of this study was to assess the knowledge and attitudes of parents in Sharjah towards HPV and whether or not they would vaccinate their daughters...
May 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28609417/visually-evoked-potential-markers-of-concussion-history-in-patients-with-convergence-insufficiency
#13
Dmitri Poltavski, Paul Lederer, Laurie Kopko Cox
PURPOSE: We investigated whether differences in the pattern visual evoked potentials exist between patients with convergence insufficiency and those with convergence insufficiency and a history of concussion using stimuli designed to differentiate between magnocellular (transient) and parvocellular (sustained) neural pathways. METHODS: Sustained stimuli included 2-rev/s, 85% contrast checkerboard patterns of 1- and 2-degree check sizes, whereas transient stimuli comprised 4-rev/s, 10% contrast vertical sinusoidal gratings with column width of 0...
June 10, 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28606692/percutaneous-sclerotherapy-of-pediatric-lymphatic-malformations-experience-and-outcomes-according-to-the-agent-used
#14
C Gallego Herrero, V Navarro Cutillas
OBJECTIVE: Analyze statistically the success, number of sessions required and complete duration of treatment of agents used in pediatric percutaneous sclerotherapy of lymphatic malformations, to determine the most suitable. MATERIAL AND METHODS: Retrospective study based on outcomes from percutaneous sclerotherapy performed on lymphatic malformations of 56 patients conducted by pediatric interventional radiologist for 14 years. As first approach, the procedure consists of ultrasound-guided introduction of sclerosing agent...
June 9, 2017: Radiología
https://www.readbyqxmd.com/read/28605403/power-and-sample-size-calculations-for-high-throughput-sequencing-based-experiments
#15
Chung-I Li, David C Samuels, Ying-Yong Zhao, Yu Shyr, Yan Guo
Power/sample size (power) analysis estimates the likelihood of successfully finding the statistical significance in a data set. There has been a growing recognition of the importance of power analysis in the proper design of experiments. Power analysis is complex, yet necessary for the success of large studies. It is important to design a study that produces statistically accurate and reliable results. Power computation methods have been well established for both microarray-based gene expression studies and genotyping microarray-based genome-wide association studies...
June 9, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28601954/perioperative-outcomes-of-robot-assisted-laparoscopic-partial-cystectomy
#16
George C Bailey, Igor Frank, Matthew K Tollefson, Matthew T Gettman, John J Knoedler
Reports of surgical outcomes after robotic partial cystectomy are limited. The objective of this study is to review surgical outcomes after robotic partial cystectomy at a large tertiary referral center and compare outcomes with patients undergoing open partial cystectomy. Patients undergoing robotic partial cystectomy between 2003 and 2014 were identified. Patients were matched 2:1 based on gender, age, and Charlson Comorbidity Score with patients undergoing open partial cystectomy during the same time period...
June 10, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28598895/the-concurrent-use-of-lumbar-total-disc-arthroplasty-and-anterior-lumbar-interbody-fusion-the-lumbar-hybrid-procedure-for-the-treatment-of-multi-level-symptomatic-degenerative-disc-disease-a-prospective-study
#17
Matthew Scott-Young, Laurence McEntee, Ben Schram, Evelyne Rathbone, Wayne Hing, David Nielsen
STUDY DESIGN: A prospective study. OBJECTIVE: The aim of this paper is to evaluate clinical and patient outcomes post combined Total Disc Arthroplasty (TDA) and Anterior Lumbar Interbody Fusion (ALIF), known as hybrid surgery for the treatment of multi-level symptomatic degenerative disc disease (DDD). SUMMARY OF BACKGROUND DATA: Class I studies comparing the treatment of one level lumbar DDD with TDA and ALIF have confirmed the effectiveness of those treatments through clinical and patient outcomes...
June 8, 2017: Spine
https://www.readbyqxmd.com/read/28598591/effect-of-split-file-digital-workflow-on-crown-margin-adaptation
#18
Ryan R Sheridan, Ronald Verrett, Stephan Haney, John Schoolfield
PURPOSE: Computer-aided design/computer-aided manufacturing (CAD/CAM) is becoming increasingly integrated into dental practice workflow at a pace that exceeds scientific validation. The aim of this study is to evaluate a complete digital split-file protocol relative to segmental digital and analog techniques for restoring a single maxillary anterior edentulous space with custom abutment and crown. MATERIALS AND METHODS: Four treatment workflows were assessed: complete digital (CD), segmental digital (SD), milled wax (AM), and heat pressed and hand waxed (AH) and heat pressed...
June 9, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28595685/implementing-psychopharmacology-rounds-in-a-nursing-facility-to-improve-antipsychotic-usage
#19
Evan Sasson, Marian James, Berhane Wubshet, Darko Todorov, Henry Cohen
OBJECTIVES: Evaluate whether implementing of pharmacy-led psychopharmacology rounds in a nursing facility will improve the rate of antipsychotic use. DESIGN: Single-center, prospective; medication use evaluation (MUE). SETTING: Rutland Nursing Home, Brooklyn, New York. PARTICIPANTS: Nursing facility residents, excluding the pediatric unit. INTERVENTIONS: Weekly interdisciplinary psychopharmacology rounds that include: clinical pharmacists, nurse managers, medical director, social workers, and administration...
June 1, 2017: Consultant Pharmacist: the Journal of the American Society of Consultant Pharmacists
https://www.readbyqxmd.com/read/28593872/establishing-consensus-based-assay-specific-99th-percentile-upper-reference-limits-to-facilitate-proper-utilization-of-cardiac-troponin-measurements
#20
Dina N Greene, Jillian R Tate
Implementation of the 99th percentile as the upper reference limit for cardiac troponin (cTn) assays is a seemingly lucid recommendation, but, in reality, is incredibly complex. Lack of harmonization between cTn assays diminishes the ability to have a single medical decision point across manufacturer assay/instruments. Moreover, even within a single cTn assay there are several published values corresponding to the "99th percentile". Variability in the determined value is primarily a function of population selection including: sample size, age, sex, exclusion criteria, and statistical methods...
April 13, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
keyword
keyword
105913
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"