Psychometric properties of the adjective rating scale for withdrawal across treatment groups, gender, and over time.
The adjective rating scale for withdrawal (ARSW) is commonly used to assess opiate withdrawal in clinical practice and research. The aims of this study were to examine the factor structure of the ARSW, test measurement invariance across gender and treatment groups, and assess longitudinal measurement invariance across the clinical trial. Secondary data analysis of the National Drug Abuse Treatment Clinical Trials Network 000-3, a randomized clinical trial comparing two tapering strategies, was performed. The ARSW was analyzed at baseline, end of taper and 1-month follow-up (N=515 opioid-dependent individuals). A 1-factor model of the ARSW fit the data and demonstrated acceptable reliability. Measurement invariance was supported across gender and taper groups. Longitudinal measurement invariance was not found across the course of the trial, with baseline assessment contributing to the lack of invariance. If change over time is of interest, change from post-treatment through follow-up may offer the most valid comparison.
Washington State University, College of Nursing, PO Box 1495, Spokane, WA, 99210-1495, USA; Department of Psychology, Washington State University, PO Box 4820, Pullman, WA, 99164-4820, USA; Programs of Excellence in Addictions Research, Washington State University, Pullman, WA 99164-4820, USA; Translational Addictions Research Center, Washington State University, Pullman, WA 99164-4820, USA. Electronic address: celestina@wsu.edu.
Celestina
C
Barbosa-Leiker
Sterling
S
McPherson
Mary Rose
MR
Mamey
G Leonard
GL
Burns
John
J
Roll
D000328:Adult; D002047:Buprenorphine / Q000008:administration & dosage; D000069479:Buprenorphine, Naloxone Drug Combination; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D009270:Naloxone / Q000008:administration & dosage; D009293:Opioid-Related Disorders / Q000534:rehabilitation*; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics; D015203:Reproducibility of Results; D012737:Sex Factors; D013375:Substance Withdrawal Syndrome / Q000175:diagnosis*; D013997:Time Factors
D000069479:Buprenorphine, Naloxone Drug Combination; D009270:Naloxone; D002047:Buprenorphine
Measurement invariance; Opiate dependence; Opiate withdrawal; Psychometrics