What test was used to obtain the p -value Questions 1 -4 are based

Question 2 / 10:

Questions 1?-4 are based on the following information:

A cohort study was conducted that examined the outcome of weight loss comparing two diets:

a traditional American diet and an all?-beet diet. Baseline characteristics are provided in Table 1 below.

Table 1: Baseline characteristics of study participants

	Traditional Diet	All?-Beet Diet	p?-value
Age [Mean (SD)]	49.4 (3.9)	52.2 (3.4)	0.003
BMI [Mean (SD)]	32.7 (2.2)	32.5 (2.1)	0.687
Male sex (%)	53.4%	51.3%	0.332

What test was used to obtain the p?-value associated with the difference between gender distribution in the two groups?

A a chi square test

B t?-test

C confidence interval

D standard error test

E beta test

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Epidemiology Hypothesis Testing & P-values

Author:

Dr.Janet ForresterProfessor

Tufts University School of Medicine

USA

Access: Public Instant Grading

Attribution: Janet, E.A. Forrester, Kwan Ho Kenneth Chui, Steven Cohen, Michael D. Kneeland, Alice Tang, David Tybor. Epidemiology and Biostatistics 2010. (Tufts University OpenCourseWare), http://ocw.tufts.edu/Course/65/ (Accessed 3 May, 2014). License: Creative Commons BY-NC-SA

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