Ways in which the given study design could be improved. Introduction: Bringing in standardization in the treatment and variables in the experiment could make it more robust.

Question

A researcher assessed body weight in a community using two methods. First, participants were asked, “Do you think you are overweight?” (Possible answers: ‘yes’ or ‘no’). All participants were then weighed and classified as ‘overweight’ or not. The assessment was however done separately by hypertensive status. Among 270 hypertensive participants, 108 were classified as overweight on the basis of being weighed. Of these 108, 54 reported themselves as overweight when questioned. Of the 162 participants not classified as overweight on the basis of being weighed 16 reported themselves as overweight when questioned. Among 745 non-hypertensive participants, 134 were classified as overweight on the basis of being weighed. Of these 134, 118 reported themselves as overweight when questioned. Of the 611 participants who were not classified as overweight on being weighed, 110 reported themselves as overweight on questioning. Separately for the groups: (1) People with hypertension (2) People…

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Question

Chapter 1, Problem 8SA

Summary Introduction

To analyze:

Ways in which the given study design could be improved.

Introduction:
Bringing in standardization in the treatment and variables in the experiment could make it more robust.

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A researcher assessed body weight in a community using two methods. First, participants were asked, “Do you think you are overweight?” (Possible answers: ‘yes’ or ‘no’). All participants were then weighed and classified as ‘overweight’ or not. The assessment was however done separately by hypertensive status. Among 270 hypertensive participants, 108 were classified as overweight on the basis of being weighed. Of these 108, 54 reported themselves as overweight when questioned. Of the 162 participants not classified as overweight on the basis of being weighed 16 reported themselves as overweight when questioned. Among 745 non-hypertensive participants, 134 were classified as overweight on the basis of being weighed. Of these 134, 118 reported themselves as overweight when questioned. Of the 611 participants who were not classified as overweight on being weighed, 110 reported themselves as overweight on questioning. Separately for the groups: (1) People with hypertension (2) People…

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