Table 1 Socio-demographics of total sample and by injection drug use behavior

Age ^a, 25 and younger (ref: older than 25)

60/405

14.8 %

54/251

21.5 %**

6

3.9 %

Ethnicity, Malay (ref: non-Malay)

401

98.8 %

250

99.2 %

151

98.1 %

Marital Status, Married (ref: single)

148

36.5 %

109

43.3 %**

39

25.3 %

Religion, Muslim (ref: non-Muslim)

401

98.8 %

250

99.2 %

151

98.1 %

Education, Some secondary or lower (ref: completed secondary or higher)

279

68.7 %

169

67.1 %

110

71.4 %

Employment role/job ^a, Deckhand (ref: Captain)

341/402

84.8 %

194/248

78.2 %

147

95.5 %**

Vessel type a, Traditional (ref: Commercial)

234/403

58.1 %

185/249

74.3 %**

49

31.8 %