RT Book, Section
A1 Glantz, Stanton A.
SR Print(0)
ID 57420757
T1 Chapter 12. What Do the Data Really Show?
T2 Primer of Biostatistics, 7e
YR 2012
FD 2012
PB The McGraw-Hill Companies
PP New York, NY
SN 978-0-07-178150-3
LK accessanesthesiology.mhmedical.com/content.aspx?aid=57420757
RD 2020/09/18
AB The statistical methods we have been discussing permit you to estimate the certainty of statements and precision of measurements that are common in the biomedical sciences and clinical practice about a population after observing a random sample of its members. To use statistical procedures correctly one needs to use a procedure that is appropriate for the study design and the scale (i.e., interval, nominal, ordinal or survival) used to record the data. All these procedures have, at their base, the assumption that the samples were selected at random from the populations of interest. If the study as conducted does not satisfy this randomization assumption, the resulting P values and confidence intervals are meaningless.