HLSC 2P49 Lecture Notes - Lecture 2: Neural Pathway, Dependent And Independent Variables, Central Nervous System
17 Sep 2013
School
Department
Course
Professor
Document Summary
Lecture 2 - september 11/13: case study. Many case studies are done in health and medicine. New or rare conditions that we need information on. Do variables go together or vary together . Defined 7 health habits (sleep, exercise, smoke) Asked residents to list which behaviors practiced and then given health habit score . Listed number, type of illness, missed work; then given a health score . Followed up 9 years later (prospective study) Asked how often they had sex per week. Sex 3x per week, likely to have heart attack. Study of new york 1965, scientists studied standard people (e. g. bus terminal) Measured stress and observed interactions with others. No cause, effect (doesn"t tell you what causes what) 3 possibilities: sex -> heart health, heart health -> sex, third unknown variable causing both, experimentation. Unlike correlation allows us to see cause/effect. Variable varied (potential cause) independent variable. Variable observed (potential effect) dependent variable.
