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Lecture 2

HLTB15H3 Lecture Notes - Lecture 2: Cognitive Test, Xibalba, Statistical Hypothesis Testing


Department
Health Studies
Course Code
HLTB15H3
Professor
Maya Obadia
Lecture
2

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Hltb15 lecture 2
SHARED CONCEPTS
Specific we want to thing about how big the research questions, what do we want to know depending what
your research topic or questions is going to how ur study will be designed
Ethics, and other stuff are intwinded in both methods.
WHAT YOU LEARN I BASED ON WHAT YOU ASK
o Research questions should be carefully formulated to address a specific issue
o Study design = research aims
o Need to gather the information to answer the questions
WHICH IS BETTER SUPERIOR PERFERRED>?
o There ist any repferred it depends
o Quantitative:
Prevalence among a large population
Concepts easily quantified
Hypothesis testing
because concepts are easily identified and large population
hypothesis is either right or wrong,
o qualitative
one issue in great depth
concepts not easily quantified
no knowledge/basi for a hypothesis
when u look at one issue in greater depth
not easily quantified phsiisa assistae die eaple – its a hole e area of edial
care and research (how phyiciains after the treatment and wht are the feeling of the families, )
used to describe when someone not easily quantified
we might not have enough knowowdge to genertate a hypothesis
QUANTATIVE HEALTH RESEARCH
PROCESS OF QOUNTATIVE RESEARCH
o Theory
o Hypothesis
o Research design
o Devise measures of cocept
o Select research sites
o Select research participants
o Collect data
o Process data
o Analyze data
o Conculsions
o Write up
CONCEPTS AND HEALTH RESEARCH
o Ideas of metnal represenations of thigns
Healty lifestyle
School life balance
Self-imagin
Pateint centred care
o Can be independent or dependent variable
o Indepdepnt
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Cause of an aspect in social world
o Dependent
Something that can be explained by another factor
o Healthy life style : reducing risky behaviour, pshyocological well beaing, healthy diet, access to health
care sste et
o Picking a aspect of healthy life style (specifically picking exercise )
INDEPENDENT VARIABLE
o Something we can manipulate and we can control for (lifestyle)
DEPENDENT VARIABLE
o Is a outcome by another factor (gpa)
How does ur lifestyle effect ur gpa ( the dpedent and indepodent varbiables switched )
Eaple: oesit  depdet  ho does osuptio iof suger driks ipat hildre s oesit idependent )
ad thi a e sithed ad it depds o the ethod u hoose u at reall deide asuilit
3 REASONS TO MEASURE
o Allow for fine differences between people to be discovered
o Provides conistancey in measuring the differences between people
o Allows for estrimation nature and strength of relationships between concepts
KNOWING WHAT YOU ARE MEASURING
o Nominal definition : giving facts … tet desriptio of hat the oept eas
o Operational definition : explcit definition and take steps to measure
o Quantitative using likard scale ( like, not like, somewhat) it gives more option .. likard skill is preferred
because you can see the change in the opioion
REALIBILITY AND VALIDITY
Are the way squnativitve research is judged
Often are lumped together but two different thing
Reliability measuring it again and again to get same consistence result.. are u getting constanly the same
results
Validity what you measure is what you say u are going to measure
RELIABILITY
o Consistence, stable over time
o Stability overtime
o Internal realibility
o Inter-observer consistency
o Video : measuring the rule and it validity making sure that ruler is each centimeter and measure 4 times
and get same result in health a tool can be reliabelt without getting the same exact results ( example
measuring with thermometer and the results both time had little difference but
o STABILITY OVER TIME: TEST RETEST METHOD
THERMOMETER EXPERIMENT
RESULT : its reliable
Correlation
COGNITIVE TESTING -
RESULT
Conclustion : it is reliable because in behavioural assessment tool the gernal purpose
and there is a learning curve there is a certain amount of increase in cognitive test ..
these tests have likard skills
o INTERNAL RELIABILITY
How consisten/realiable are the multiple measures administered in one sitting?
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