Retrospective Vs Prospective Study PowerPoint PPT Presentations

Retrospective vs Prospective Study: Advantages, Types and Differences

Types of Studies and Study Design Research classifications Observational vs. Experimental Observational researcher collects info on attributes or measurements of ...

Cohort studies Case control studies Field methods ...

Clinical trials. Case-control study. Study Population. Cases. Controls. Exposed ... All patients in a hospital department at a given time. Selection of Controls ...

Study types. Cohort and case-control studies. Charlotte Gl mer. Bendix Carstensen. STAR-course ... Geographically area, special age groups, birth cohorts ...

No control over subjects, conditions and variables. May be retrospective, cohort, cross-sectional, longitudinal or prospective ...

Examples of observational designs ('Name that Design') Single-Sentence ... gold standard of surgical pathology after neoadjuvant chemoradiation in patients ...

Research conducted with human subjects (or on material of human origin such as ... Right and welfare of subjects not adversely affected by waiver of informed consent ...

Microsatellite Instability in Sporadic Colorectal Cancer: A Retrospective Study Kimberley Slowther Trainee Project West Midlands Regional Genetics Laboratory

Advanced topics in study design II: Less commonly used observational study designs John S. Witte jwitte@ucsf.edu Ecologic Studies- Concepts (continued) Levels of ...

A Prospective, Longitudinal Health Outcomes Study of Pregnant Women and Children Undergoing Subluxation Based Chiropractic Care Matthew McCoy, DC, MPH

Assistant Professor of Medicine and of Epidemiology and Biostatistics ... Ali Al-Attar, M.D., Ph.D., Christine G. Holzmueller, B.A., J. Bryan Sexton, ...

Association is between group characteristics, and disease occurrence in the group ... Ecologic studies and Tuberculosis. Coal use ( ) and TB incidence ...

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To identify the strengths and weakness of different designs ... Pathological reports and specimens were reviewed to confirm the histologic type of the tumor. ...

A prospective study to evaluate a number of factors related to GIRD in asymptomatic collegiate athletes: Baseball/Volleyball/Softball Questions: ...

VAC Abdominal Dressing a retrospective study in the treatment ... Ileus. Ascites. Absces. Trauma. Pancreas. Large bowel. Small bowel. Stomach. Reason. Therapy ...

Penectomy Urology Jr. PCT Radiotherapy / Cancer Jr. No Advocates ... Br J of Urology (1994) 73, 554-560. Retrospective study. TMH Prospective Study: Aims ...

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Goals, Targets, Markets, Competition. Prospective Framework Elements. Concluding Remarks ... To be of free-market interest, a new technology must provide significant ...

Case studies could have benefits and drawbacks. The benefits and drawbacks of any study must be considered by researchers before deciding whether it is appropriate for their goals.A case study gives academics the opportunity to research phenomena that are typically challenging or impossible to replicate in a lab, which is one of its main advantages.

Similarities and differences between prospective & retrospective memory ... New Yok: Plenum Press. Neisser, U. (1978). Memory: What are the important questions? ...

Title: Study Methods Author: Sajedinejad Last modified by: sajedinejads Created Date: 6/28/2004 9:23:44 AM Document presentation format: A4 Paper (210x297 mm)

Consider a hypothetical prospective cohort study of 89,949 women aged 34-59; 1, ... These data can be used to estimate the relative risk. ...

Study Design. Retrospective review of prospectively collected outcomes data. ... Evaluated at Pre-Op, 2-5 weeks, 6 weeks-2 months, 3-5 months, 6-11 months, 1 year. ...

Cohort Study Subodh S Gupta Dr. Sushila Nayar School of Public Health MGIMS, Sewagram * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * The ...

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Cohort studies Design Concepts in Nutritional Epidemiology Barrie M. Margetts and Michael Nelson Contents General considerations Practical issues Infancy and ...

Fear of hypoglycemia The fear of hypoglycemia often stems from observing people with diabetes who take insulin. Point out that with the use of newer rapid-acting ...

Systematic reviews can help practitioners keep abreast of the medical literature ... In putting many studies together, invariably some assumptions have to be made. ...

... leukemia. 8 no leukemia. 4 with leukemia. 20 not leukemia. Exposed ... The risk of developing leukemia was approximately twice that of the unexposed workers ...

Also called follow-up studies, incidence studies, panel studies, longitudinal ... ordered subgroups) and to use the extremes as the comparison (referent) group ...

Identifying the Study Design When reading a paper, it isn t always clear what the study design is. Sometimes there is a combination of strategies.

Study methods may change over time. Different investigators may examine ... Study design most susceptible to bias. Separate sampling of cases and controls ...

vet school: lectures, practical sessions. conferences. text books. journal articles ... hand to ask/phrase the 5 - 6 questions that I need to ask veterinary collegeges ...

Homogenous diagnostic criteria (case identification) ... Pill counts, biological tests, etc. Use strategies to insure completeness of follow-up ...

Chapter 13 Experiments and Observational Studies Review Population Parameter This is a numerical summary of a population Proportion, mean, standard deviation We don ...

Preliminary observations are frequently later refuted. May rationalize ... Organize citations and format bibliographies. specific journal styles, APA, etc. ...

Lurking variable. Experiment. Subjecting the sample to a controlled treatment where ... The objects on which the treatment is imposed on are called ...

The individual who is killed in a car crash in Year 1? ... Among smokers, how much of the mortality they experience is due to their smoking? ...

Guidelines for Writing a Health Economics and Outcomes Research (HEOR) Studies

Study Designs in Epidemiology Ahmed Mandil, MBChB, DrPH Prof of Epidemiology High Institute of Public Health University of Alexandria Headlines Epidemiological ...

TYPES OF STUDIES IN DIABETES EPIDEMIOLOGY TYPES OF STUDIES BASED ON: Purpose Time Cost Feasibility TYPES OF STUDY Observational Descriptive Analytical Cross-sectional ...

CSI 36-39 Gy with posterior fossa boost to 54Gy vincristine, adjuvant chemo ... boost to 54 Gy to posterior fossa. Patient's received baseline testing ...

In judging a prize fight, how to compare 300 light punches with 100 direct hits? ... Grand rounds case: Chiro. treatment of large disk herniation 'I-am-a-clever ...

Exposure may not be related to outcome. 3. Case-Control Study ... study) than to conduct a clinical trial that is flawed and poorly designed. ...

Due to size of program at federal and state level, Medicaid is seen as a budget ... New: new to the Acute Program or new to the GSA. Small: based on enrollment ...

Pulse palpation was conducted on 16 infants and children (average age 1.8 years, ... This study suggests that pulse palpation is an unreliable method by healthcare ...

Unplanned matching-neighborhood controls are inadvertently matched with cases on SES. ... when variables related to the disease are inadvertently matched upon. ...

The simplest form of an observational study. Both 'exposures' and 'outcomes' are ... a 'snapshot' of the health (or other) experiences of the population at that ...

... Shingles ... Response = Severity of shingles. Factor = ointment. Levels = current ointment ... Example - Shingles. Patients: Alex, Bethany, Carl, Denise, Evelyn, Fred, ...

Biometry ~ Types of Studies Research classifications Observational vs. Experimental Observational researcher collects info on attributes or measurements of ...

Quitting Smoking with Nicotine Patches (JAMA, Feb. 23, 1994, pp. 595-600) ... Non-meditators were recruited from a different setting in New York City. Sta 208: ...

Diseases with long incubation periods, such as cancer, require lag time to be ... Requires rare disease assumption for odds ratio to estimate relative risk ...

time spent exercising and a diagnosis of skin cancer. Barry Braun, Ph.D. Basics of Study Design ... that is worn on the hip and is sensitive to motion. ...

TYPES OF STUDIES AND GOALS. CROSS-SECTIONAL. Understand ... Exercise. Diet. Drug. Outcome evaluation. EXPERIMENTAL STUDY. Cross-over design. Outcome evaluation ...