Rates in Epidemiology 2024/2025 Exam
Questions and Detailed Answers | Get it
100% Correct Answers
count - 🧠ANSWER ✔✔-the enumeration of the events of interest
-express the outcome of interest in the form of a quantity
Duration & its relation to prevalence & incidence - 🧠ANSWER ✔✔length of
disease
-Short duration = lower prevalence
-Long duration = higher prevalence (keep people alive longer with a disease)
-High incidence, low duration = low prevalence (you either get well or die)
Proportion - 🧠ANSWER ✔✔-a count expressed relative to a total population *of
interest*
-# of events that meet criteria/max # of events that meet those criteria
-*numerator is always part of denominator*
-0-1
-EX: proportion of Ebola deaths among those who got ebola = # ebola deaths/
total ebola cases
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619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED
, Ratios eqn. - 🧠ANSWER ✔✔quantity or degree of one thing divided by the
quantity or degree of something else
EX: ratio of males to females in a class = # males/#females = 5 males/30 females
= 1:6 male to female ratio
Rates - 🧠ANSWER ✔✔-Amount or # of one thing in relation to units of
something else
-EX: cancer death rates last year in SC
3 basic factors in rate calculation - 🧠ANSWER ✔✔1. Numerator - # cases
measured in specific time
2. Denominator - total pop. of the study
3. Time period - period during which the pop. was monitored for events
primary prevention - 🧠ANSWER ✔✔reducing incidence of disease
secondary prevention - 🧠ANSWER ✔✔focused on early detection to reduce the
prevalence of disease - cure ppl faster
control of disease - 🧠ANSWER ✔✔ongoing programs aimed at reducing
incidence and/or prevalence of disease
3 measures of morbidity & mortality - 🧠ANSWER ✔✔rates
Page 2 of 7
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED
Questions and Detailed Answers | Get it
100% Correct Answers
count - 🧠ANSWER ✔✔-the enumeration of the events of interest
-express the outcome of interest in the form of a quantity
Duration & its relation to prevalence & incidence - 🧠ANSWER ✔✔length of
disease
-Short duration = lower prevalence
-Long duration = higher prevalence (keep people alive longer with a disease)
-High incidence, low duration = low prevalence (you either get well or die)
Proportion - 🧠ANSWER ✔✔-a count expressed relative to a total population *of
interest*
-# of events that meet criteria/max # of events that meet those criteria
-*numerator is always part of denominator*
-0-1
-EX: proportion of Ebola deaths among those who got ebola = # ebola deaths/
total ebola cases
Page 1 of 7
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED
, Ratios eqn. - 🧠ANSWER ✔✔quantity or degree of one thing divided by the
quantity or degree of something else
EX: ratio of males to females in a class = # males/#females = 5 males/30 females
= 1:6 male to female ratio
Rates - 🧠ANSWER ✔✔-Amount or # of one thing in relation to units of
something else
-EX: cancer death rates last year in SC
3 basic factors in rate calculation - 🧠ANSWER ✔✔1. Numerator - # cases
measured in specific time
2. Denominator - total pop. of the study
3. Time period - period during which the pop. was monitored for events
primary prevention - 🧠ANSWER ✔✔reducing incidence of disease
secondary prevention - 🧠ANSWER ✔✔focused on early detection to reduce the
prevalence of disease - cure ppl faster
control of disease - 🧠ANSWER ✔✔ongoing programs aimed at reducing
incidence and/or prevalence of disease
3 measures of morbidity & mortality - 🧠ANSWER ✔✔rates
Page 2 of 7
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED
