Epidemiology - seminar 1 (homework and workshop)

Seminar 01

Homework assignment 1
1a. prevalence.
- Point prevalence:
number of cases at
specific time
- Period prevalence: number of cases over a period
- Lifetime prevalence: part of people in population who ever had the
disease
Incidence
- Cumulative incidence:
measures new cases
over a period in a fixed population
- Incidence rate/density: measures new cases per person/time
o New cases in period P / total person time-at-risk within period
P
Mortality: frequency of deaths in population over period
- Crude mortality rate: total
deaths in population
- Cause-specific: deaths due to
specific disease
Case fatality rate (CFR): how deadly a disease
is by calculating the proportion of people with
the disease who die from it.

1b.
- case series: none of the MODF
o Case series describe cases of a disease without a comparison
group. They do not measure incidence or prevalence in a
population.
o CFR zou wel kunnen
- Ecological study: prevalence and mortality rate, alles zou kunnen
- Cross-sectional: prevalence
- Case control: none of the MODF
- Prospective cohort study: incidence, mortality, and CFR
- Retrospective cohort study: incidence, mortality, and CFR
- Randomized controlled trial (RCT): incidence, mortality, CFR