Ethical approval was obtained from University Ethics Committees before starting data collection. Data on several key variables and the trends in missing data were examined to determine if data varied Downloaded by [UQ Library] at The instrument included items about sociodemographic information, experiences of violence, work history and workplace characteristics, health status, and job satisfaction. This variable was collapsed into three categories: Data were collected through both face- to-face interviews and self-completion of a questionnaire, depending on the location of the interview and the preference of the participant. Likewise, in , regulated brothel-based sex work was legalized. As no differences were found, the data were pooled. Standard questions used in the Australian Census were used to collect sociodemographic characteristics Australian Bureau of Statistics, , while information a bout work history including age of commencement, length of time in the sex industry, and income and characteristics of the workplace, such as type and location of service provision, were derived from a questionnaire used to collect data from Queensland sex workers in Boyle et al. Participants were asked to indicate the extent of their agreement with the following items: For the purpose of data analysis, the unwanted sexual experiences variable was collapsed into a dichotomous form to indicate having been raped or bashed by a client in the past 12 months. We also considered several Downloaded by [UQ Library] at Procedure Multiple recruitment strategies were used to obtain a diverse sample of sex workers. In , state laws were passed to legalize private sole oper- ators private sex workers. Descriptive data are expressed as percentages, mean SD , or mean. Sex workers listed on an adult escort Web site were also e-mailed about participating in the study. The recruitment strategies used in this study are detailed elsewhere Seib et al. Measurement of unwanted sexual experiences since age 16 was collected in two ways.