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hw3 - CR Long C532 Regression Modeling 21 Nov 2011...

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CR Long C532: Regression Modeling 21 Nov 2011 Homework #3 ( Due as e-mail attachments by 8am on Mon, 28 Nov 2011 ): 1. Use the SPSS dataset Exam3Q4_C530_2011.sav from the course website (5 pts). a. Extend your data analysis from HW 2 and adjust for the variables age and age at onset of primary dysmenorrhea symptoms. b. Report the differences among the adjusted group means and the 95% confidence intervals in a table according to reporting guidelines. 2. Use the SPSS dataset HW3_C532_2011.sav from the course website. (10 pts) This dataset contains select data from a randomized clinical trial conducted to test the efficacy of spinal manipulative therapy (SMT) and exercise for treating the symptoms of women with primary dysmenorrhea. This study was designed as a 2x2 factorial with one treatment group (variable tx1) representing SMT (1=sham; 2=side- posture) and the other treatment group (variable tx2) representing exercise (1=no; 2=yes). Women were recruited, randomly assigned to the treatment groups, and studied over four menstrual cycles. Two primary outcome variables, the Visual
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