Epidemiology

Question 0

.Cross-sectional study vs. Cohort study vs. Case analysis

Answer 0

1) Cross-sectional - Analysis at single pt in time

2) Cohort - Analysis over specific time period
[longitudinal]

3) Case-analysis - Retrostudy

Question 1

.Incidence vs. Prevalence

Answer 1

1) Incidence - Proportion of pop w/ disease over specific time period
(Change in freq at which disease occurs)

2) Prevalence - Proportion of pop w/ disease at one point in time
(Overall freq at which disease occurs)

Question 2

.Epidemiology vs. Etiology

Answer 2

1) Epidemiology
- Study of humans in relation to total enviro
- Knowledge available about health condition in pop
- Deals w/ cause, freq, distrib, control of disease
- Study of factors that det freq,distrib of disease

2) Etiology
- ID and quantify factors
- Assoc btwn risk factor and outcome
(Cause and effect)

Question 3

.Sensitivity vs. Specificity

Answer 3

1) Sensitivity - True positives

2) Specificity - True negatives