Tracer studies are retrospective analyses of samples in order to evaluate long term impact of intervention programs. The results of tracer studies highlight circumstances that produce meaningful change in populations.Know More
A tracer study helps researchers identify effective and ineffective components in educational and vocational programs. The results of tracer studies are quantitative and the data is easy to analyze. A tracer study in the field of education includes data from former students of learning institutions or vocational programs. The format of a tracer study is often a questionnaire. According to the manual for creating tracer studies by the international cooperative, Helvetas, effective tracer studies are short questionnaires with clear questions, ask for recommendations and use both quantitative and qualitative questions. Tracer studies are most effective when the samples are random and include annual collection of data. Researchers administer tracer studies to the sample groups between nine to 12 months after graduation from the measured program.
Tracer studies are common research tools for educational and training programs. These impact assessment tests help identify the strengths and weaknesses of the programs they measure. The institutions use the results of tracer studies to improve education and training programs as well as enhance the learning experiences of future learners.Learn more about Diagnostics & Imaging
Patients are required to fast for 8 to 16 hours before a glucose tolerance test in order to eliminate the effects of recent meals on blood sugar levels, according to WebMD. This provides an accurate reading of the patient's baseline blood sugar.Full Answer >
A flexible sigmoidoscopy exam allows a doctor to view the inside of the anus, rectum and lower third of the large intestine in order to screen for colon cancer or to evaluate intestinal symptoms, according to Mayo Clinic. The procedure lasts around 30 minutes and doesn't require sedation.Full Answer >
A lumbar puncture is a procedure performed on the lower back in which a needle is inserted into the spinal column in order to extract cerebrospinal fluid, explains Johns Hopkins Medicine. Medication and dyes for diagnostic imaging may be injected during spinal taps as well.Full Answer >
Doctors recommend that patients minimize drinking at least a week prior to surgery in order to reduce the risks of complications during and after surgery, according to Choose Help. Just two to three drinks per day increases the risk of infection as surgical wounds heal.Full Answer >