Project #15745 - Biostatistics

NOTE: Assume we are testing at α = 0.05 for all statistical tests

 

A study by Licciardone et al. on osteopathic manipulation as a treatment for chronic back pain was conducted to compare osteopathic manipulative Therapy (OMT), sham manipulation (SHAM), or non-intervention (CONTROL).  Patients rated back pain from 0 = no pain to 10 = worst possible pain.

[DATA: eab_703_ps7_osteopath]

 

 

Can we conclude, based on these data that, on average, pain levels differ in the three treatment groups?

 

Ho:

 

Ha:

 

Test statistic & value:

 

p-value:

 

Statistical conclusion:

 

Practical conclusion:

 

 

 

 

 

 

 

 

IF post hoc tests are appropriate, provide a summary of the results below.


Hartman-Maier et al. were interested in evaluating awareness deficits among stroke patients undergoing rehabilitation treatment.  Of the 54 patients in the study, 35 had right hemisphere lesions and 19 had left hemisphere lesions.  Lesions were grouped according to size (2 = 1-3cm diameter; 3 = 3-5cm diameter; 4 = 5+ cm diameter).  Higher scores on the unawareness scale indicate more stroke damage.  Using the unawareness score as the dependent variable, provide an ANOVA to examine the potential significant effects of the two independent factors in the study (i.e., Factor 1 = Lesion group size; Factor 2 = Hemisphere where damage occurred).

[DATA: eab_703_ps7_brain_damage]

 

Test of Interaction Effect

 

Ho:

 

Ha:

 

p-value:

 

Test statistic and value:

 

Test of Hemisphere Effect

 

Ho:

 

Ha:

 

p-value:

 

Test statistic and value:

 

Test of Lesion Size

 

Ho:

 

Ha:

 

p-value:

 

Test statistic and value:

 

Post hoc follow-up for lesion size (if necessary)

Subject Mathematics
Due By (Pacific Time) 10/31/2013 04:00 pm
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