HTHSCI 3C04 Lecture Notes - Lecture 4: Random Number Table, Sampling Error, External Validity
11 Apr 2018
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Non-random: birth dates (odd/even, chart numbers, list of next up , day of week in clinic, convenience. Are there baseline differences? randomization reduces the likelihood of these differences. Individuals involved in a study (e. g. , patients, investigators, research staff) do not know who is assigned to treatment or control groups. Study personnel: data collectors, outcome assessors. To aid in blinding, some trial participants may get something that is not really a treatment or for real . Diabetes management study / stoke intervention study. Placebos less frequently utilized in many of today"s pragmatic rcts. Extra care or treatment given to one group and not the other. Participants in the control group accidentally get the intervention (minimizing the potential differences in outcomes between groups), and vice versa. Examining sampling in quantitative and qualitative research papers (pg. Sample: the group of people in a study; a subset of the population the ideal study sample represents the total population.
