The reliability and validity of Reward Probability Index-Chinese version applied among individuals with opioid dependence
10.3760/cma.j.cn371468-20190916-00622
- VernacularTitle:回报可能性指数量表中文版应用于阿片类物质成瘾患者的信效度
- Author:
Han YAN
1
;
Yun CHEN
;
Hongfei MA
;
Nianhua XIE
;
Xia WANG
;
Stacey DAUGHTERS
;
Marek CHAWARSKI
;
Wang ZHOU
Author Information
1. 武汉市疾病预防控制中心艾滋病防治所 430015
- From:
Chinese Journal of Behavioral Medicine and Brain Science
2020;29(2):172-176
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the reliability and validity of the Reward Probability Index-Chinese version (C-RPI) among individuals with opioid dependence.Methods:A total of 160 individuals with opioid dependence were recruited from the methadone maintenance treatment(MMT) programs in Wuhan.The C-RPI was used in the investigation, and items/exploratory factors and confirmatory factors were adopted to analyze with IBM SPSS 22.0 and AMOS 24.0, respectively.Results:The correlation between each item and the total score of the scale was 0.325-0.657 (all P<0.01) and the item discrimination of the scale was good.Exploratory factor analysis extracted two factors, including reward probability and environmental suppressors, and a load of each item on its factor ranged from 0.519 to 0.744.The fitting indexes of confirmatory factor analysis were as follows: χ 2/ df=1.623, RMR=0.030, RMSEA=0.063, IFI=0.902, TLI=0.885, CFI =0.900.The internal consistency coefficient (Cronbach's α) of the C-RPI was 0.800; and there was no ceiling/floor effect on each dimension and total scale. Conclusion:The classification of dimensions for the C-RPI is reasonable, and the scale has good reliability and validity to measure the ability to obtain environmental rewards for individuals with opioid dependence.
