Research methodology definition ppt

Over a long period, many changes may occur in theenvironment, among individuals or in the type ofintervention, and these may confuse the issue ofassociation and attributable risk.Odds ratio (cross product ratio) It is a key parameter in the analysis of case control studies A measure of the strength of the association between risk factor and outcome Derivation of odds ratio is based on 3 assumptions Disease under investigation is a rare one Cases are representative of those with disease Controls are representative of those without disease.Can yield information about more than one disease outcome. Expensive.

Case study as a research method -

Tests whether disease occurs more frequently in those exposed, than in those not similarly exposed.

Historical Research - The University of New Mexico

For research carrying more than minimal risk, an account of plans to provide medical therapy for such risk or injury or toxicity due to over dosage should be included.Selection of controls Crucial step in case-control studies Controls must be Be similar to the cases except for the absence of the disease under study Equal ratio Sources of controls Hospitals:diff illness Relatives Neighborhood controls General population.Inclusion and exclusion criteria should be clearly stated before the commencement.

No risk to subjects Allows the study of several different aetiological factors (e.g.,smoking, physical activity and personality characteristics inmyocardial infarction) No attrition problems, because case control studies do notrequire follow-up of individuals into the future Ethical problems minimal.

Method or methodology, what's the difference? - Whānau Ora

Translations for nursing methodology research - definitions

The higher the proportion lost (say beyond 10-15%) the more serious the potential bias.Specifying study design Selection of measures: many measure,assessments Eg:self report rating scales for dental anxiety,observations,interviews,stand questionnaires simple rating scale can be given a no.1-strongly agree 2-agree 3-undecided 4-disagree 5-strongly disgree May not exist for the study,this may necessiate the development of new scale. should possess Reliability and validity.

PowerPoint Presentation - Qualitative Research Author: Vince Schreck.

What Is Survey Research? - Definition, Methods & Types

Inclusion and exclusion criteria for entry of subjects in the study.Cohort studies Usually undertaken to obtain additional evidence to refute or support the existence of an association between suspected cause and disease Other names Incidence study Forward looking study Longitudinal study Prospective study.Exploring, Interrogating, and Transforming. the Interconnections of Epistemology, Methodology, and Method. S. harlene. n. agy. h. eSSe.

A research design will typically include how data is to be collected,.Describing disease-time,place and person Time: Short term fluctuation: Common source epidemics-single,continuous Propagated epidemics-person to person transmission of infectious agent---epidemics of hepatitis A and poliomyelitis Slow or modern epidemics.What data has been collected What particular method has been adopted for collection of data Why a particular technique of data collection has been used And a host of similar questions are usually answered when we talk of research methodology, so that research results are capable of being evaluated either by the researcher himself or by others.

Study of epidemics among colonies of experimental animals such as rats and mice.Data Collection Methods Pros and Cons of Primary and Secondary Data Where do data come from.

Research strategies Selection of a research strategy is the core of a research design and is probably the single most Important decision the investigator has to make, i.e. whether to undertake a descriptive, an analytical or an experimental study.Proposed compensation and reimbursement of incidental expenses.

Experimental studies Study of epidemics among colonies of experimental animals such as rats and mice.Approach is.Storage and maintenance of all data collected during the trial.The Research Methodology Program prepares professional practitioners in psychometrics and test development, and prepares scholars who make contributions to the study.

An operational definition is how we (the researcher

Approach vs Methodology - Difference Between

Case control study cohort study Proceeds from effect to cause Starts with the disease Tests whether the suspectedexposure occurs more frequentlyin those with the disease thanamong those without thedisease.In fact, a methodology is a system of methods followed consistently.Methodology-- a theory or analysis of how research does and.Research Theory and Methods 19 our discipline-based teachers and our students represent a range: The teachers are two men and two women who teach in three different.Follow up Periodic medical examination of each member Reviewing physician and hospital records Routine surveillence of morbidity and mortality records Mailed questionnaires, telephone interviews, periodic home visits.Considerations to be kept in mind while conducting research: In any research on human beings, each subject must be adequately informed of the aim, methods, anticipated benefits and potential hazards of the study and the discomfort it may entail.