NUR 254 Chap 10-11
- population
Answer is the entire group of interest
- sample
Answer involves selecting a portion of the population to represent the population. (subset of population elements)
- Elegibility criteria
Answer specific characteristics that limit the population
- inclusion criteria
Answer whether a person qualifies
- exclusion criteria
Answer if they should be excluded from the sampling (for example, patients who can not speak english
- Strata
Answer subpopulations - exclusive parts of the population based on specific criteria. example
population consisting of all RNs in the UK can be divided into three levels of strata based on experience, 0-5, 5-10, 10-15
- target population 1 / 2
Answer entire population in which researcher is interested in, for example all diabetes are the target population
- Accessible population
Answer portion of the target population that is accessible by the researchers. for example, the only diabetics accessible are the 2 nearby hospitals
- Representative sample
Answer a sample that closely approximates those of the pop- ulation
easily achieved with probability sampling, homogenous populations, larger samples
- sampling bias
Answer systemic overrepresentation of some part of the population
- nonprobability sampling
Answer researchers select elements(humans) by non ran- dom methods in which every element usually does not have a chance to be included.
- probability sampling
Answer random selection of elements from a population. do not confuse RCT - has nothing to do with treatment conditions only how elements of the population are selected
- convenience sampling
- / 2
Answer selecting the most convenient available people as participants