{Reference Type}: Journal Article
{Title}: Investigating the factor structure of the Illness Perception Questionnaire-revised for substance dependence among injecting drug users in China.
{Author}: Mo PK;Lau JT;Cheng KM;Mak WW;Gu J;Wu AM;Li J;
{Journal}: Drug Alcohol Depend
{Volume}: 148
{Issue}: 0
{Year}: Mar 2015 1
{Factor}: 4.852
{DOI}: 10.1016/j.drugalcdep.2015.01.008
{Abstract}: <B>BACKGROUND: </B>The Illness Perception Questionnaire-Revised (IPQ-R) has commonly been used to measure illness representations of various diseases. The present study examined whether the original factor structure of the IPQ-R could be confirmed or a new structure could be established on substance dependence among injecting drug users (IDU) in China.<BR><B>METHODS: </B>A total of 257 IDU completed the 38-item IPQ-R on substance dependence.<BR><B>RESULTS: </B>Results of confirmatory factor analysis (CFA) showed that the 7-factor structure as proposed by the original IPQ-R reported poor goodness-of-fit statistics. Although removal of 12 items improved the model fit, the goodness-of-fit statistics were still below acceptable standards. Furthermore, factors obtained from the exploratory factor analysis (EFA) of the IPQ-R were not interpretable.<BR><B>CONCLUSIONS: </B>The CFA found that the original IPQ-R factor structure fit the data poorly. Factors derived from EFA were also not interpretable. Use of the IPQ-R for assessment of illness representations of substance dependence among IDU in China is cautioned until further validation.