NURS 339 Study Guide - Midterm Guide: Sampling Frame, Selection Bias, Factor Analysis
Document Summary
Research type by focus: for example, let"s look at cancer. What causes cancer? causation experimental focus expose subjects to carcinogen. [intervention], have a control, see who gets cancer. What factors increase risk of developing cancer risk factors, associations/correlations . Non-experimental prospective (follow people following exposure, compare to those who have not had exposure), retrospective (of people who have cancer, how well do past events predict current condition?) How many people get cancer? prevalence, incidence observational-descriptive no intervention, no control, simply looking within a data set to see how many/how much. Between-subjects = two groups, look at difference between the two groups. Within-subjects = only one group, look at change in group over time. Once, or multiple times but within a very short time period. Multiple (3+) times, over an extended period of time. Confounding variable = relates to experimental (iv) and outcome (dv) variables. Counterfactual = misattributing the effects of the passage of time to intervention.
