{Reference Type}: Journal Article
{Title}: The test-retest reliability of the Opiate Treatment Index in nyaope users in Johannesburg.
{Author}: Pitsoane K;Morgan N;Mall S;
{Journal}: S Afr J Psychiatr
{Volume}: 30
{Issue}: 0
{Year}: 2024
{Factor}: 1.242
{DOI}: 10.4102/sajpsychiatry.v30i0.2087
{Abstract}: <B>UNASSIGNED: </B>Epidemiological studies suggest that nyaope, a heroin-based drug, is widely used in South Africa. Yet few reliable research tools are available to assess treatment outcomes of users. The Opiate Treatment Index (OTI), a tool developed in Australia, could potentially facilitate research on context-specific South African treatment outcomes. However, we know little of its test-retest reliability.<BR><B>UNASSIGNED: </B>This study aimed to assess the test-retest reliability of the OTI among a sample of nyaope users in Johannesburg.<BR><B>UNASSIGNED: </B>This study was conducted across three substance use treatment facilities in Johannesburg.<BR><B>UNASSIGNED: </B>The OTI was administered to 53 nyaope users at baseline and one week later. To determine the test-retest reliability of the OTI, the intra-class correlation coefficients (ICC) and the Brennan-Prediger coefficients of the two interviews were calculated.<BR><B>UNASSIGNED: </B>The ICC of the Q-scores from the data sets along with the Brennan-Prediger coefficient for the substance use domain were calculated. The ICC for nyaope was 0.38. Brennan-Prediger coefficients were as follows: alcohol - 0.96, crack-cocaine - 0.89, cannabis - 0.92, methaqualone - 0.85 and crystal methamphetamine - 0.89.<BR><B>UNASSIGNED: </B>A significant positive finding was the excellent test-retest reliability of the injecting and sexual behaviour domains and moderate reliability of the criminality, general health and social functioning domains.<BR><B>UNASSIGNED: </B>The results of this study provide insight into the reliability of this tool and for its use in future studies in the South African context.