bio question (1 Viewer)

[immboredd]

what's the main differences between morbidity, incidence and prevalence ?

 

[shadowlike04]

Incidence = rate of new cases of a disease within a period of time.
Prevalence = total number of individuals in a population who have a disease or health condition (during a specific period of time)
Morbidity = A term used to describe illness, impairment or degradation of health (used in discussion of chronic and age-related diseases).
Mortality = The rate of deaths due to a disease

Sample Question:

 

[immboredd]

Thanks !

 

[stressedadfff]

Incidence = rate of new cases of a disease within a period of time.
Prevalence = total number of individuals in a population who have a disease or health condition (during a specific period of time)
Morbidity = A term used to describe illness, impairment or degradation of health (used in discussion of chronic and age-related diseases).
Mortality = The rate of deaths due to a disease

Sample Question:

View attachment 31514

would you deduct the deaths to calculate the prevalence?

 

[Eagle Mum]

would you deduct the deaths to calculate the prevalence?

Yes - note the question is worded ‘at the conclusion of the study’, the time point when all the deaths during the study have occurred, to avoid any ambiguity.

 

[Eagle Mum]

Yea I thought the same. But why haven’t they done it for this question.
View attachment 31804

I suspect because, for this question, the answer is found in the opening sentence and the rest of the details aren’t all that relevant so they didn’t bother being rigorous as it would have no effect on the outcome. I’m not condoning the lack of uniform rigour in question setting - just offering a possible suggestion since you asked.