Table 1 Sociodemographic characteristics, methadone treatment, HIV test year, region, and HIV infections among PWIDs in China, 2008–2016

Total

103,619

100

Sex

 Male

92,548

89.3

 Female

11,071

10.7

Age

35 (30–41)

Ethnicity

 Han

87,816

84.7

 Minority

11,573

11.2

 Missing

4230

4.1

Education

 High school or above

11,572

11.2

 Junior high school

64,386

62.1

 Primary school or below

25,396

24.5

 Missing

2265

2.2

Marital status

 Married

47,017

45.4

 Unmarried

43,908

42.4

 Divorced/widows

10,945

10.6

 Missing

1749

1.7

Drug types

 Opioids

102,850

99.3

 Other types

769

0.7

Methadone treatment status

 No

82,431

79.6

 Yes

21,188

20.4

Year

 2008

8301

8.0

 2009

18,206

17.6

 2010

14,690

14.2

 2011

11,526

11.1

 2012

10,905

10.5

 2013

12,152

11.7

 2014

12,470

12.0

 2015

11,092

10.7

 2016

4277

4.1

Region

 Southwest

17,318

16.7

 Northwest

5702

5.5

 South

31,293

30.2

 Northeast

1583

1.5

 Central

19,032

18.4

 North

4752

4.6

 East

23,939

23.1

HIV

 Positive

5167

5.0

 Negative

98,452

95.0