STAT W1001 Study Guide - Midterm Guide: European Credit Transfer And Accumulation System, Confounding, Observational Study

15 views2 pages

tsanas861

21 Jan 2022

School

Columbia University

Department

Statistics

Course

STAT W1001

Professor

For unlimited access to Study Guides, a Grade+ subscription is required.

Document Summary

To test the effect of a new medication on heart rate , su ects are ran om y a ocate to rece ve ew rug or placebo for two weeks . After randomization, the sample sizes were 41 and 39 , respectively. Patients"" heart rates were measured before they started treatment (baseline) and after two weeks on the drug (end of treatment). Unintentional bias- questions should be to the point; easily interpreted, one meaning. Desire to please; ordering of questions- the first question should not hint at the second question. Confidentiality and. anonymity; asking the uninformed- people do not like to admit they do not know what they are talking about. Stuvia. com - the marketplace to buy and sell your study material. /final questions: step 1: determine if the research was a sample survey, an experiment, an observational study, a combination, or based on anecdotes.

Related Questions

UIS was a 5-year (1989-1994) collaborative research project (Benjamin F. Lewis, P.I.,
National Institute on Drug Abuse Grant #R18-DA06151) comprised of two concurrent
randomized trials of residential treatment for drug abuse. The purpose of the study was
to compare treatment programs of different planned durations designed to reduce drug
abuse and to prevent high-risk HIV behavior. The UIS sought to determine whether
alternative residential treatment approaches are variable in effectiveness and whether
efficacy depends on planned program duration. The data are in phreg.csv.
Variable Description Codes/Values
ID Identification Code 1 - 628
AGE Age at Enrollment Years
BECK Beck DepressionScore 0.000 - 54.000
HERCOC Heroin/Cocaine Use During 1 = Heroin & Cocaine
3 Months Prior to Admission 2 = Heroin Only
3 = Cocaine Only
4 = Neither Heroin
nor Cocaine
IVHX History of IV Drug Use 1 = Never
2 = Previous
3 = Recent
NDRUGTX Number of Prior Drug Treatments 0 - 40
RACE Subject's Race
0 = White
1 = Non-White
TREAT Treatment Randomization 0 = Short
Assignment 1 = Long
SITE Treatment Site 0 = A
1 = B
LOS Length of Stay in Treatment Days
(Admiss. Date to Exit date)