Table 3

 Responses elicited to the drug related questions comparing FFI and ACASI

QuestionFFI (%)ACASI (%)p Value
*Among participants admitting to injection drug use.
NS, not significant. The sign test was used to compare the binary responses. ACASI, audio computer assisted interview; FFI, face to face interview; IDU, injection drug users.
IDU ever (n = 669)10.19.0NS
    Age 18–241.21.2NS
    Age 25–6415.213.3NS
Needle sharing* (n = 52)69.267.3NS
    Age 18–2400NS
    Age 25–646866NS