<p>There are 628 data points in the original data, 575 of which have no missing values.</p>
<p>Variable descriptions:</p>
<table class="table">
<tr><td>Variable</td><td>Description</td><td>Codes/Values</td></tr>
<tr><td>ID</td><td>Identification Code</td><td>1 - 628</td></tr>
<tr><td>AGE</td><td>Age at Enrollment</td><td>Years</td></tr>
<tr><td>BECK</td><td>Beck DepressionScore</td><td>0.000 - 54.000</td></tr>
<tr><td>HC</td><td>Heroin/Cocaine Use During</td><td>1 = Heroin &amp; Cocaine</td></tr>
<tr><td></td><td>3 Months Prior to Admission</td><td>2 = Heroin Only</td></tr>
<tr><td></td><td></td><td>3 = Cocaine Only</td></tr>
<tr><td></td><td></td><td>4 = Neither Heroin nor Cocaine</td></tr>
<tr><td>IV</td><td>History of IV Drug Use</td><td>1 = Never</td></tr>
<tr><td></td><td></td><td>2 = Previous</td></tr>
<tr><td></td><td></td><td>3 = Recent</td></tr>
<tr><td>NDT</td><td>Number of Prior Drug Treatments</td><td>0 - 40</td></tr>
<tr><td>RACE</td><td>Subject's Race</td><td>0 = White</td></tr>
<tr><td></td><td></td><td>1 = Non-White</td></tr>
<tr><td>TREAT</td><td>Treatment Randomization</td><td>0 = Short</td></tr>
<tr><td></td><td>Assignment</td><td>1 = Long</td></tr>
<tr><td>SITE</td><td>Treatment Site</td><td>0 = A</td></tr>
<tr><td></td><td></td><td>1 = B</td></tr>
<tr><td>LEN.T</td><td>Length of Stay in Treatment</td><td>Days</td></tr>
<tr><td></td><td>(Admission Date to Exit Date)</td><td></td></tr>
<tr><td>TIME</td><td>Time to Drug Relapse</td><td>Days</td></tr>
<tr><td></td><td>(Measured from Admission Date)</td><td></td></tr>
<tr><td>CENSOR</td><td>Event for Treating Lost to</td><td>1 = Returned to Drugs</td></tr>
<tr><td></td><td>Follow-Up as Returned to Drugs</td><td>or Lost to Follow-Up</td></tr>
<tr><td></td><td></td><td>0 = Otherwise</td></tr>
<tr><td>Y</td><td>log of TIME</td><td></td></tr>
<tr><td>ND1</td><td>Component of NDT</td><td></td></tr>
<tr><td>ND2</td><td>Component of NDT</td><td></td></tr>
<tr><td>LNDT</td><td></td><td></td></tr>
<tr><td>FRAC</td><td>Compliance fraction</td><td>LEN.T/90 for short trt</td></tr>
<tr><td></td><td></td><td>LEN.T/180 for long trt</td></tr>
<tr><td>IV3</td><td>Recent IV use</td><td>1 = Yes</td></tr>
<tr><td></td><td></td><td>0 = No</td></tr>
</table><p></p><p></p>

datasets

Estimation and inference methods for models for conditional quantile functions:
Linear and nonlinear parametric and non-parametric (total variation penalized) models
for conditional quantiles of a univariate response and several methods for handling
censored survival data.  Portfolio selection methods based on expected shortfall
risk are also now included. See Koenker, R. (2005) Quantile Regression, Cambridge U. Press,
<doi:10.1017/CBO9780511754098> and Koenker, R. et al. (2017) Handbook of Quantile Regression,
CRC Press, <doi:10.1201/9781315120256>.

Roger Koenker

quantreg

Quantile Regression

Stephen Portnoy

Blaise Melly

Achim Zeileis

Philip Grosjean

Cleve Moler

Yousef Saad

Victor Chernozhukov

Ivan Fernandez-Val

uis function

<p>A data frame with dimension 575 by 18.</p>

Format

<p>There are 628 data points in the original data, 575 of which have no missing values.</p>
<p>Variable descriptions:</p>
<table class='table'>
<tr><td>Variable</td><td>Description</td><td>Codes/Values</td></tr>
<tr><td>ID</td><td>Identification Code</td><td>1 - 628</td></tr>
<tr><td>AGE</td><td>Age at Enrollment</td><td>Years</td></tr>
<tr><td>BECK</td><td>Beck DepressionScore</td><td>0.000 - 54.000</td></tr>
<tr><td>HC</td><td>Heroin/Cocaine Use During</td><td>1 = Heroin &amp; Cocaine</td></tr>
<tr><td></td><td>3 Months Prior to Admission</td><td>2 = Heroin Only</td></tr>
<tr><td></td><td></td><td>3 = Cocaine Only</td></tr>
<tr><td></td><td></td><td>4 = Neither Heroin nor Cocaine</td></tr>
<tr><td>IV</td><td>History of IV Drug Use</td><td>1 = Never</td></tr>
<tr><td></td><td></td><td>2 = Previous</td></tr>
<tr><td></td><td></td><td>3 = Recent</td></tr>
<tr><td>NDT</td><td>Number of Prior Drug Treatments</td><td>0 - 40</td></tr>
<tr><td>RACE</td><td>Subject's Race</td><td>0 = White</td></tr>
<tr><td></td><td></td><td>1 = Non-White</td></tr>
<tr><td>TREAT</td><td>Treatment Randomization</td><td>0 = Short</td></tr>
<tr><td></td><td>Assignment</td><td>1 = Long</td></tr>
<tr><td>SITE</td><td>Treatment Site</td><td>0 = A</td></tr>
<tr><td></td><td></td><td>1 = B</td></tr>
<tr><td>LEN.T</td><td>Length of Stay in Treatment</td><td>Days</td></tr>
<tr><td></td><td>(Admission Date to Exit Date)</td><td></td></tr>
<tr><td>TIME</td><td>Time to Drug Relapse</td><td>Days</td></tr>
<tr><td></td><td>(Measured from Admission Date)</td><td></td></tr>
<tr><td>CENSOR</td><td>Event for Treating Lost to</td><td>1 = Returned to Drugs</td></tr>
<tr><td></td><td>Follow-Up as Returned to Drugs</td><td>or Lost to Follow-Up</td></tr>
<tr><td></td><td></td><td>0 = Otherwise</td></tr>
<tr><td>Y</td><td>log of TIME</td><td></td></tr>
<tr><td>ND1</td><td>Component of NDT</td><td></td></tr>
<tr><td>ND2</td><td>Component of NDT</td><td></td></tr>
<tr><td>LNDT</td><td></td><td></td></tr>
<tr><td>FRAC</td><td>Compliance fraction</td><td>LEN.T/90 for short trt</td></tr>
<tr><td></td><td></td><td>LEN.T/180 for long trt</td></tr>
<tr><td>IV3</td><td>Recent IV use</td><td>1 = Yes</td></tr>
<tr><td></td><td></td><td>0 = No</td></tr>
</table>



UIS Drug Treatment study data — uis

UIS Drug Treatment study data

uis: UIS Drug Treatment study data

Description

Usage

Arguments

Format

References

Variable	Description	Codes/Values
ID	Identification Code	1 - 628
AGE	Age at Enrollment	Years
BECK	Beck DepressionScore	0.000 - 54.000
HC	Heroin/Cocaine Use During	1 = Heroin & Cocaine
	3 Months Prior to Admission	2 = Heroin Only
		3 = Cocaine Only
		4 = Neither Heroin nor Cocaine
IV	History of IV Drug Use	1 = Never
		2 = Previous
		3 = Recent
NDT	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
LEN.T	Length of Stay in Treatment	Days
	(Admission Date to Exit Date)
TIME	Time to Drug Relapse	Days
	(Measured from Admission Date)
CENSOR	Event for Treating Lost to	1 = Returned to Drugs
	Follow-Up as Returned to Drugs	or Lost to Follow-Up
		0 = Otherwise
Y	log of TIME
ND1	Component of NDT
ND2	Component of NDT
LNDT
FRAC	Compliance fraction	LEN.T/90 for short trt
		LEN.T/180 for long trt
IV3	Recent IV use	1 = Yes
		0 = No