Baseline characteristics between treatment groups

Reference no: EM13109210

1. The mean BMI in patients free of diabetes was reported as 28.2. The investigator conducting the study described in Problem 1 hypothesizes that the BMI in patients free of diabetes is higher. Based on the data in Problem 1 is there evidence that the BMI is significantly higher than 28.2? Use a 5% level of significance.

2. The table below summarizes baseline characteristics on patients participating in a clinical trial.

Characteristic	Placebo (n=125)	Experimental (n=125)	P
Mean (+ SD) Age	54 + 4.5	53 + 4.9	0.7856
% Female	39%	52%	0.0289
% Less than High School Education	24%	22%	0.0986
% Completing High School	37%	36%
% Completing Some College	39%	42%
Mean (+ SD) Systolic Blood Pressure	136 + 13.8	134 + 12.4	0.4736
Mean (+ SD) Total Cholesterol	214 + 24.9	210 + 23.1	0.8954
% Current Smokers	17%	15%	0.5741
% with Diabetes	8%	3%	0.0438

a) Are there any statistically significant differences in baseline characteristics between treatment groups? Justify your answer.

b) Write the hypotheses and the test statistic used to compare ages between groups. (No calculations - just H₀, H₁ and form of the test statistic)

c) Write the hypotheses and the test statistic used to compare % females between groups. (No calculations - just H₀, H₁ and form of the test statistic)

d) Write the hypotheses and the test statistic used to compare educational levels between groups. (No calculations - just H₀, H₁ and form of the test statistic)

Reference no: EM13109210

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