Question

MATCH THE FOLLOWING TERMS AND DESCRIPTIONS CROSS

SECTIONAL                                                           A. DO NOT HAVE TO COMPLETE TREATMENT

DISEASE INCIDENCE                                                        B. NUMBER OF NEW CASE OF DISEASE OVER TIME

INTENTION TO TREAT                                                     C.AT A SINGLE POINT IN TIME

MATCHING                                                                         D. FOLLOWED ALL TREATMENT/STUDY PROCEDURES

PER PROTOCOL                                                                 E. CREATING SIMILAR COMPARSION GROUPS

A study is planned to investigate risk factors for sudden cardiac death. A cohort of men and women between the ages of 35 and 70 are enrolled in the followed for up to 20 years. As part of the study, participants provide data on demographic and behavioral characteristics, they also undergo testing for cardiac function and provide a blood samples to assess lipid profiles and other biomarkers. A new measure of inflammation is hypothesized to be related to sudden cardiac death? Describe its strengths and weaknesses:

Strengths:

Weaknesses:

3. A study is planned to compare two weight loss programs in patients who are obese. The first program is based on restricted caloric intake and second is based on specific food combinations. The study will involve twenty participants and each participant will follow each program. The programs will be assigned in random ore (i.e., some participants will first follow the restricted calorie diet). The number of pounds lost will be compared between diets. Identify the type of study proposed and indicate its specific strengths and weaknesses.

Strengths:

Weaknesses:

 

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Question

A study is conducted comparing HDL cholesterol levels between men who exercise regularly and those who do not. The

data are shown below. Generate a 95% confidence interval for the difference in mean HDL levels between men who exercise regularly and those who do not.

1. Z 95% Confidence:

2. Upper Limit 95% Cl:

3. Lower Limit 95% Cl:

4. Based on examination of the upper and lower limits of the confidence interval for the mean HDL levels which of the following is (are) true.

A. There IS statistical evidence of a difference in mean HDL levels between men who exercise regularly and those who do not.

B. There is NOT statistical evidence of a difference in mean HDL levels between men who exercise regularly and those who do not.

C. The confidence interval contains the mean HDL level.

D. B & C.

Regular Exercise                               |        N                   |      Mean          |       Std Dev                  |

YES                                                         |       35                  |        48.5          |    12.5                              |

NO                                                           |       120                |         56.9          |          11.9                        |

 

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