scholarly journals The Limitations of Quasi-Experimental Studies, and Methods for Data Analysis When a Quasi-Experimental Research Design Is Unavoidable

2021 ◽  
Vol 43 (5) ◽  
pp. 451-452
Author(s):  
Chittaranjan Andrade
Keyword(s):  
Data Analysis ◽  
Test Performance ◽  
Research Question ◽  
Neuropsychological Test ◽  
Experimental Studies ◽  
Antidepressant Medication ◽  
Historical Comparison ◽  
Unique Effect ◽  
Quasi Experimental ◽  
Multivariable Regression

A quasi-experimental (QE) study is one that compares outcomes between intervention groups where, for reasons related to ethics or feasibility, participants are not randomized to their respective interventions; an example is the historical comparison of pregnancy outcomes in women who did versus did not receive antidepressant medication during pregnancy. QE designs are sometimes used in noninterventional research, as well; an example is the comparison of neuropsychological test performance between first degree relatives of schizophrenia patients and healthy controls. In QE studies, groups may differ systematically in several ways at baseline, itself; when these differences influence the outcome of interest, comparing outcomes between groups using univariable methods can generate misleading results. Multivariable regression is therefore suggested as a better approach to data analysis; because the effects of confounding variables can be adjusted for in multivariable regression, the unique effect of the grouping variable can be better understood. However, although multivariable regression is better than univariable analyses, there are inevitably inadequately measured, unmeasured, and unknown confounds that may limit the validity of the conclusions drawn. Investigators should therefore employ QE designs sparingly, and only if no other option is available to answer an important research question.

Posttraumatic Stress Disorder Exacerbates Emotional Complaints but not Cognitive Impairments in Individuals Suffering from Postconcussional Disorder after Mild Traumatic Brain Injury

2015 ◽  
Vol 26 (1) ◽  
pp. 35-50 ◽  
Author(s):  
Sara C. Schroeder ◽  
Ronald M. Ruff ◽  
Lutz Jäncke
Keyword(s):  
Traumatic Brain Injury ◽  
Posttraumatic Stress Disorder ◽  
Brain Injury ◽  
Posttraumatic Stress ◽  
Mild Traumatic Brain Injury ◽  
Test Performance ◽  
Stress Disorder ◽  
Negative Impact ◽  
Neuropsychological Test ◽  
Composite Scale

The aim of this study was to examine the effect of posttraumatic stress disorder (PTSD) on (a) neuropsychological test performance and (b) self-reported emotional complaints within individuals suffering from postconcussional disorder (PCD) after a mild traumatic brain injury (MTBI). A two-group comparative research design was employed. Two MTBI samples with and without PTSD were assessed with a neuropsychological test battery and the Ruff Neurobehavioral Inventory (RNBI). On the neurocognitive test performances no significant between group differences were found, but the MTBI group with PTSD endorsed a significantly greater number of emotional complaints, especially in the RNBI subscales of anxiety and depression. The patients with PTSD also endorsed a significantly greater number of premorbid sequelae in the RNBI emotional composite scale as well as the RNBI premorbid subscales of pain, anxiety and abuse. In sum, PTSD has a negative impact on emotional but not cognitive functioning within individuals suffering from PCD after a mild TBI.

Third Party Observers and Neuropsychological Test Performance: A Meta-Analysis

2010 ◽  
Author(s):  
Angela D. Eastvold ◽  
Pamela M. Dean ◽  
Heather Belanger ◽  
Rodney D. Vanderploeg
Keyword(s):  
Test Performance ◽  
Meta Analysis ◽  
Neuropsychological Test ◽  
Third Party

Every second counts: A comparison of four dot counting test scoring procedures for detecting invalid neuropsychological test performance.

2020 ◽  
Author(s):  
Tasha Rhoads ◽  
Zachary J. Resch ◽  
Gabriel P. Ovsiew ◽  
Daniel J. White ◽  
Dayna A. Abramson ◽  
...  
Keyword(s):  
Test Performance ◽  
Neuropsychological Test ◽  
Test Scoring

A Comparative Analysis of Two Qualitative Methods: Deciding Between Grounded Theory and Phenomenology for Your Research

2017 ◽  
Vol 28 (1) ◽  
pp. 23-40
Author(s):  
Masoodi Marjan
Keyword(s):  
Grounded Theory ◽  
Data Analysis ◽  
Comparative Analysis ◽  
Historical Development ◽  
Research Question ◽  
Qualitative Approaches ◽  
Development Goals ◽  
Applied Approach ◽  
Similarities And Differences ◽  
Research Students

Abstract The purpose of this article is to compare two qualitative approaches that can be used in different researches: phenomenology and grounded theory. This overview is done to (1) summarize similarities and differences between these two approaches, with attention to their historical development, goals, methods, audience, and products (2) familiarize the researchers with the origins and details of these approaches in the way that they can make better matches between their research question(s) and the goals and products of the study (3) discuss a brief outline of each methodology along with their origin, essence and procedural steps undertaken (4) illustrate how the procedures of data analysis (coding), theoretical memoing and sampling are applied to systematically generate a grounded theory (5) briefly examine the major challenges for utilizing two approaches in grounded theory, the Glaserian and Straussian. As a conclusion, this overview reveals that it is essential to ensure that the method matches the research question being asked, helps the researchers determine the suitability of their applied approach and provides a continues training for the novice researchers, especially PhD or research students who lack solid knowledge and background experience in multiple research methods.

EFEKTIVITAS STRATEGI CLOZE STORY MAPPING TERHADAP KEMAMPUAN MEMBACA PEMAHAMAN PADA SISWA KELAS V DI SD 2 PADOKAN KASIHAN BANTUL

2018 ◽  
Vol 5 (1) ◽  
Author(s):  
Danuri Danuri ◽  
Dwendha Lahitani
Keyword(s):  
Data Analysis ◽  
Learning Strategy ◽  
T Test ◽  
Effective Learning ◽  
Average Value ◽  
Story Mapping ◽  
Analysis Technique ◽  
Significant Difference ◽  
Quasi Experimental ◽  
Class Average

This study aims to determine the effectiveness of CSM strategies on comprehension reading skills in classes V Padokan 2 Elementary School. The research method used is a quasi-experimental method. In this study the subjects of the study were VA class students as the control class and V C as the experimental class with 28 VA and VC class students. Quantitative data analysis technique used is the calculation of independent sample t-test. Based on data analysis and discussion, researchers can conclude that CSM strategies are more effective than conventional methods of reading comprehension learning. The results of this study indicate that there is a significant difference between the experimental class and the control class as evidenced by the results of the independent sample t-test obtained by the value of Asymp. Sig (2-Tailed) 0.014 <0.05. CSM strategy is an effective learning strategy seen from the average value of the experimental class posstest which is 81.61 higher than the control class average value of 72.96.

MEMIKAT HATI WAJIB PAJAK SEHINGGA MEMILIKI WILLINGNESS TO COMPLY MELALUI PENYULUHAN PAJAK BERDASARKAN FOGG BEHAVIORAL MODEL

INFO ARTHA ◽  
2017 ◽  
Vol 2 ◽  
pp. 56-79
Author(s):  
NFN Khusnaini ◽  
Agung Widi Hatmoko
Keyword(s):  
Data Analysis ◽  
Quantitative Analysis ◽  
Statistical Data ◽  
Tax Compliance ◽  
Behavioral Model ◽  
Control Group ◽  
Qualitative And Quantitative Analysis ◽  
Qualitative And Quantitative ◽  
Quasi Experimental ◽  
Experimental Process

Attitudes towards tax compliance (willingness to comply) Indonesian society is still low. Required an innovative tax dissemination to increase it. The purpose of this study was to determine whether the tax dissemination based on Fogg Behavioral Model (FBM) approach may increase wiliingness to comply. The FBM based tax dissemination asserts that for a person to perform a target behavior, which is a willingness to comply, he or she must be sufficiently motivated, have the ability to perform the behavior, and be trigerred, to perform the behavior. This research is a combination of qualitative and quantitative analysis of statistical data results of the questionnaire, interviews, and observations of the respondent and the experimental process of dissemination. The method used in this study is a quasi experimental with patterns of nonequivalent control group (pretest-post which is not equivalent). Based on the results of data analysis, interviews and observations of the respondent and the experiment, this research showed that theFBMbasedtaxdissemination hasapositiveimpactto willingnesstocomplyofthetaxpayers. 

THE EFFECTIVENESS OF USING COOPERATIVE SCRIPT METHOD TO IMPROVE STUDENTS’ READING COMPREHENSION ON RECOUNT TEXT OF 8th GRADE STUDENTS OF SMP N KEWAPANTE, MAUMERE IN ACADEMIC YEAR 2017/ 2018

2018 ◽  
Vol 2 (2) ◽  
pp. 210-220
Author(s):  
Wendelinus Oscar Janggo ◽  
Yuliana Wisnawati Nona Nungsi
Keyword(s):  
Reading Comprehension ◽  
Data Analysis ◽  
Experimental Research ◽  
Qualitative Data ◽  
Qualitative Data Analysis ◽  
Quantitative Data Analysis ◽  
8Th Grade ◽  
Eighth Grade Students ◽  
Quasi Experimental ◽  
Academic Year

This research is entitled “The Effectiveness of Using Cooperative Script Method to Improve Students’ Reading Comprehension on Recount Text of 8th Grade Students of SMP N Kewapante, Maumere in Academic Year 2017/ 2018”. The objective of this research is to investigate and to find out whether the use of cooperative script method effective to improve students’ reading comprehension on recount text. The method of this research is experimental research especially quasi experimental research. In analyzing the data, the researcher combined both quantitative and qualitative data analysis. In qualitative data analysis, the researcher used interview technique in order to get information about students’ perceptions in reading, while in quantitative data analysis, the researcher used SPSS version 16. The result of the research showed that the implementation of Cooperative Script Method in experimental class was more effective to help the students in reading comprehension on recount text compared to the use of the conventional method in control class of the eighth grade students of SMP N Kewapante, Maumere. It is also found that cooperative script method positively contributed to improve students’ reading comprehension. Therefore ,the researcher  suggests the teachers to use cooperative script method in order to improve students reading comprehension Additionally, cooperative script method can also motivate students to be more active, relax and enthusiastic to comprehend reading texts.

Aplicabilidade clínica das técnicas de liberação manual diafragmática: uma revisão sistemática

2020 ◽  
Vol 18 (3) ◽  
pp. 111-116
Author(s):  
Dulce Marieli Danieli ◽  
Fabíola De Almeida Gomes ◽  
Bruna Eibel ◽  
William Dhein
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Gastroesophageal Reflux ◽  
Randomized Clinical Trials ◽  
Experimental Studies ◽  
Scar Tissue ◽  
Low Back ◽  
Musculoskeletal Manipulations ◽  
Clinical Applicability ◽  
Quasi Experimental

INTRODUÇÃO: O diafragma é o principal músculo respiratório e desempenha um papel importante na respiração e na regulação fisiológica. Uma terapia que visa melhorar essas condições referentes ao diafragma, é a técnica de liberação manual diafragmática. OBJETIVO: O objetivo deste estudo foi verificar a aplicabilidade clínica das técnicas manuais de liberação diafragmática e identificar as principais técnicas, populações investigadas, variáveis avaliadas e seus desfechos. MÉTODOS: Foram pesquisadas as seguintes bases de dados: PubMed, Scielo e Science Direct, com os descritores “Diaphragm [Mesh]” e “Musculoskeletal Manipulations [Mesh]” com seus correspondentes no mesmo idioma. Foram incluídos ensaios clínicos randomizados, não randomizados, estudos semi, quase-experimentais e estudos pilotos ou de caso, que abordaram técnicas de liberação manuais diafragmáticas.RESULTADOS: Há variadas técnicas de liberação diafragmática, sendo as mais mencionadas: normalização dos pilares do diafragma, alongamento e estiramento do diafragma, relaxamento dos pilares do diafragma. Além disso, as técnicas de liberação diafragmática vêm sendo associadas a protocolos de terapia manipulativa osteopática (TMO). As principais populações estudadas foram de pacientes saudáveis, com lombalgia, cervicalgia, osteoartrite, asmáticos, doença pulmonar obstrutiva crônica, constipados, cardiopatas e com refluxo gastroesofágico. Os principais desfechos avaliados são variáveis musculoesqueléticas (dor, flexibilidade, amplitude, espessura diafragmática), variáveis cardiorrespiratórias (pressão inspiratória/expiratória máxima (PImax e Pemax), mobilidade torácica, frequência cardíaca e respiratória), qualidade de vida e disfunções gastrointestinais/gastroesofágicas. CONCLUSÃO: A aplicabilidade clínica das técnicas de liberação diagramática está sendo investigada associado com outras técnicas osteopáticas, em protocolos de TMO em pacientes saudáveis, pneumopatas, cardiopatas, gestantes, em cicatriz pós-cirúrgica, constipados, com refluxo gastroesofágico, osteoartrite, cervicalgia e com lombalgia. Evidencia-se: diminuição ou eliminação das dores musculoesqueléticas, aumento da flexibilidade, ADM, Pimáx e Pemáx, aumento da mobilidade torácica, aumento da qualidade de vida, diminuição do inchaço e dor abdominal e sem efeito em cardiopatas.ABSTRACT. Clinical applicability of manual diaphragmatic release techniques: a systematic review.BACKGROUND: The diaphragm is the main respiratory muscle and plays an important role in breathing and physiological regulation. A therapy that aims to improve these conditions regarding the diaphragm, is the manual diaphragmatic release technique.OBJECTIVE: The aim of this study was to verify the clinical applicability of manual diaphragmatic release techniques and searching the main techniques, population, evaluated variables, and outcomes. METHODS: The following electronic databases were searched: PubMed, Scielo, and Science Direct, with the descriptors “Diaphragm [Mesh]” and “Musculoskeletal Manipulations [Mesh]” with their correspondents in the same language. There were included randomized clinical trial, non-randomized clinical trials, semi, and quasi-experimental studies, and pilot or case studies, which addressed manual diaphragmatic release techniques.RESULTS: There are various diaphragmatic release techniques, the most mentioned are: normalization of the diaphragm pillars, stretching of the diaphragm, relaxation of the diaphragm pillars, and protocols for osteopathic manipulative therapy (OMT) for the diaphragm. The main populations studied were healthy patients, with low back pain, asthmatics, chronic pulmonary obstructive disease, constipated, cardiac patients, and gastroesophageal reflux. The main outcomes assessed are musculoskeletal variables (pain, flexibility, range of motion, diaphragmatic thickness), cardiorespiratory variables (maximal inspiratory/expiratory pressure (MIP and MEP), chest mobility, heart, and respiratory rate), quality of life, and gastrointestinal/ gastroesophageal disorders.CONCLUSION: The clinical applicability of diagrammatic release techniques is being investigated in association with other osteopathic techniques, in protocols of OMT in healthy subjects, patients with lung diseases, heart disease, pregnant women, scar tissue, constipated, with gastroesophageal reflux, osteoarthritis, cervicalgia and with low back pain. There is evidence of reduction and elimination of musculoskeletal pain, increased MIP, increased chest mobility, an increase in health quality, a decrease of bloating and abdominal pain related to constipation, and a decrease of reflux symptoms.

Sign in / Sign up

Export Citation Format

Share Document