# Research II 2nd lecture

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- Mount St Marys School
- Health Care Organization And Policy
- Health Care Organization And Policy 462
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- Research II 2nd lecture

**Created:**2012-02-08

**Last Modified:**2012-02-08

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-Full

-a way to measure an theoretical construct in a tangible manor

ex: finding a way to measure balance or flexibility

-performance on functional activities (sit to stand, walking)

-isokentic strength testing

-Physical functionality

-Mental functionality

-social functionality

-pain

-role functioning- emotional

-role functioning- physical

-vitality

-continuous

-ordinal

-Ratio

-ratio of different values does NOT have a clear interpretion

-used in design of research proposals

-reporting data

-run each variable one at at time

-run 2 at a time to find relationships

ex: ordinary least squares regression, logistic regression

-ANOVA

x^2= sum (O-E)^2/E

E= Expected value

-look up results in table by degrees of freedom to find probablity

Ha = the meas are not equal (2-tailed)

-compute T statistic (formula)

-look up in table using degrees of freedom

-reject Ho in favor of Ha if p< cut off of p

Ho - mean 1 = mean 2 = ... meanx

Ha = the means are not equal

-compute F statistics

-look up in table using degrees of freedom

-reject Ho if favor Ha if p< cut off p

F= independent variable

y = dependent variable

*looks at how depended variable (y) relates to independent variable (f)

-ordinary leads square multivariable regression

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