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. Author manuscript; available in PMC: 2015 May 1.
Published in final edited form as: Int J Drug Policy. 2013 Dec 1;25(3):458–464. doi: 10.1016/j.drugpo.2013.11.011

Figure 1. Drug use related factors associated with level of monthly income after accounting for socio-demographic characteristics.

Figure 1

The four categories of average total monthly income were defined by non-fixed quartiles for each follow-up. The adjusted odds ratios presented above were derived from a multivariate generalized linear mixed-effects model, which used the lowest category of average total monthly income as the reference category. The model also adjusted for age, female sex, unstable housing in the previous 6 months, engaging in sex work in the previous 6 months, drug dealing in the previous 6 months, regular employment in the previous 6 months and HIV status and included observations from December 1 1999 to December 30 2004.