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MU - MBI 361 - Chapter 4 Study Guide - Study Guide

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MU - MBI 361 - Chapter 4 Study Guide - Study Guide

School: Miami University
Department: Microbiology
Course: Epidemiology
Professor: Kelly Abshire
Term: Fall 2018
Tags: Ratios
Name: Chapter 4 Study Guide
Description: This will cover some of our exam
Uploaded: 09/29/2018
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background image Chapter 4 Study Guide 1. Study Design a. The  path  a researcher takes to  collect analyze  and  interpret data 2. Descriptive Epidemiology a. Includes observations, definitions, measurements, interpretations and the  distribution of the resulting health information b. WHO, WHAT, WHERE, WHEN  (NOT WHY OR HOW) c. Involves statistical methods d. Benefits i. Provides information on health issues ii. Identifies populations at risk for health issues iii. Shows the extent of health issues iv. Provides information for future research 3. 4 Types of Descriptive Studies a. Ecologic studies ( Only study that represents the population ) i. Data on the  population level ii. Can involve  confounding factors iii. Ecologic fallacy­Associating a common characteristic found in people  with a condition as an essential characteristic for that condition b. Case Reports i. Profile on the  individual 1. Events are in chronological order c. Case Series i. Small group of patients with similar diagnoses  d. Cross­sectional (Prevalence) Surveys i. Focused on the  individual ii. Conducted over a  short period of time iii. NO FOLLOW UP PERIOD iv. Response bias­The people who tend to respond to the surveys do not  represent the population of interest v. Serial Surveys 1. Cross sectional surveys that are  routinely conducted 2. Examples: a. Behavior Risk Factor Surveillance System b. National Health Interview Survey
c. National Hospital Discharge Survey
vi. 4 Types of Data 1. Nominal a. Unordered categories (race, gender, marital status, etc.) 2. Ordinal
background image a. Ordered categories (ex. 1­not likely, 5­most likely) 3. Discrete a. Integer values 4. Continuous a. Measurable quantities, not just integer values (ex. Weight,  temperature) 5. Ratios, Proportions and Rates a. General formula for ratios, proportions and rates: i. x
y
×10 n ,  10 n  (rate base, n can be 1, 2, 3, 4, 5) b. Rate i. x and y are independent, rate base is 1 c. Proportion i. x is contained in y, rate base is 100 d. Rate i. Proportion, represents # of cases of a condition  during a time period 6. Rate Equations a. Mortality Rate i. Deaths occurred during a time period/population in  which the deaths occurred b. Incidence Rate i. New cases of a condition during a time  period/population at risk during the time period c. Prevalence Proportion i. New & existing cases at a point in time/study  population at point in time d. Attack Rate (Cumulative Incidence Rate) i. New cases of a condition in a short time  period/population at risk at beginning of time period ii. Used for larger health issues than incidence rate e. Secondary Rate i. New cases from primary contact in a short time  period/(pop. at risk at beginning of time)­(primary  cases) f. Person­Time Rate 

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School: Miami University
Department: Microbiology
Course: Epidemiology
Professor: Kelly Abshire
Term: Fall 2018
Tags: Ratios
Name: Chapter 4 Study Guide
Description: This will cover some of our exam
Uploaded: 09/29/2018
3 Pages 356 Views 284 Unlocks
  • Better Grades Guarantee
  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!
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