What is the primary distinction between an observational and an experimental analytic epidemiology study? (a) researchers randomly allocate study participants to exposure or non-exposure group(b) its focus is to identify and quantify causal relationship between an exposure and an outcome(c) measures of association is rr or rd researchers decide the level of exposure among participants(d) researchers decide the level of exposure among participants(e) it require follow up of participants to ascertain the occurrence of disease of interest

my questions are always answered on spot you know whats the

you gotta always put the reward points high. if you r question takes long to answer and the reward points is just 5, then almost nobody will likely want to answer your question.

also, if your question is unclear, lacks information, nobody gonna answer.

people prefer multiple choice the best, its easy and quick when multiple choices questions. if you have long sentence questions on stories, essay, etc., then you have to at least give them as much points as possible.

it kinda like bounty , the question with most reward prize and the easiest to pull off will get

hope this

just saying your question will get reported and deleted an my answer too

age might have something to do with behavior depending on the age because not everyone who is the same age acts the same like 2 year olds could have bad behavior but some won't.

i hope this : )