List Three reasons for the importance of sample size in statistical inference. L

Question

List Three reasons for the importance of sample size in statistical inference. List 2 Primary purposes of a disease outbreak investigation. List 4 reasons for plotting an Epidemic Curve. List 5 Sources of data used to make a collabrative decision during an outbreak List 5 Risk Markers that may be associated with risk factors. Ongoing active survaliance may be performed on noscomial infections (Bench Marks) including these 6 specific types.. What are they. The Infection Control program for a hospital should include these 4 components.. What are they. All these questions are from Bio 3450 or known as Epidemiology

Explanation / Answer

Reasons for investigating outbreaks ? Prevent additional cases in the current outbreak ? Prevent future outbreaks ? Learn about a new disease ? Learn something new about an old disease ? Reassure the public ? Minimize economic and social disruption ? Teach epidemiology ------------------------------------ How are outbreaks recognized? ? Practitioners (astute clinician, infection control professional, laboratory worker) ? Patient or patient's family ? Public health surveillance data (uncommon) ? Local media (newspaper and television) ------------------------- Constraints of field outbreak investigation ? Urgency to find source and prevent cases ? Pressure for rapid conclusion ? Statistical power often limited ? Media reports may bias interviewees ? Pressures because of legal liability ? Pressures because of financial liability ? Delays lead to limited human or environmental samples for testing ------------------------ Conducting an outbreak investigation in 7 steps (or less) 1. Case investigation 2. Cause investigation 3. Control measures (do early) 4. Conduct analytic study (if necessary) 5. Conclusions (epi/causal inference) 6. Continue surveillance 7. Communicate findings

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