Table 1 Key characteristics amongst adolescent female sex workers who ever used ATS

Age

 17 years

3/6

 18 years

2/6

 19 years

1/6

Education

 Completed primary school

1/6

 Not completed middle school

4/6

 Completed middle school

1/6

Residential status

 Rural areas in Kunming

3/6

 Other rural areas in Yunnan

3/6

Current connection with family

0/6

Ethnicity

 Han

6/6

Social insurance (medical care, social relief)

0/6

Type of drug used

 Methamphetamine pill

6/6

 Crystal methamphetamine

2/6

 Ecstasy

6/6

 Ketamine power

3/6

 Heroin

6/6

Drug use history

 Less than 1 year

2/6

 1–2 years

2/6

 More than 2 years

2/6