Table 2 Outcome adjusted odds ratios per injection risk behaviour, (2002–2012, N = 2150)

 Man

1

1

1

 Woman

1.51 (1.03; 2.21)

1.31 (0.94; 1.83)

0.95 (0.67; 1.34)

 Sweden

1

1

 Europe (excl. Sweden)

0.96 (0.69; 1.33)

0.89 (0.66; 1.20)

0.88 (0.64; 1.21)

 Rest of the world

0.9 (0.57; 1.42)

0.68 (0.44; 1.04)

0.87 (0.56; 1.38)

 Homeless

1

1

1

 Living with somebody

0.7 (0.52; 0.96)

0.8 (0.61; 1.06)

0.71 (0.53; 0.95)

 Own housing contract

0.63 (0.44; 0.9)

0.57 (0.41; 0.80)

0.41 (0.29; 0.58)

 0

1

1

1

 1–2

1 (0.69; 1.43)

0.94 (0.67; 1.3)

0.75 (0.53; 1.05)

 3 or more

1 (0.69; 1.45)

0.91 (0.65; 1.27)

0.8 (0.56; 1.13)

 17–19 years

1

1

1

 ≤ 13 years

1.24 (0.79; 1.93)

1.23 (0.82; 1.85)

1.48 (0.97; 2.26)

 14–16 years

0.97 (0.64; 1.48)

1.12 (0.76; 1.65)

1.15 (0.77; 1.71)

 20–24 years

0.93 (0.49; 1.77)

0.73 (0.40; 1.36)

0.87 (0.46; 1.64)

 ≥ 25 years

0.95 (0.43; 2.07)

0.83 (0.40; 1.72)

0.42 (0.20; 0.89)

 17–19 years

1

1

1

 ≤ 16 years

0.88 (0.59; 1.31)

1 (0.7; 1.42)

1.43 (0.99; 2.08)

 20–24 years

0.85 (0.59; 1.24)

0.76 (0.54; 1.06)

1.07 (0.75; 1.52)

 25–29 years

0.65 (0.4; 1.06)

0.78 (0.5; 1.22)

0.96 (0.6; 1.54)

 ≥ 30 years

0.46 (0.29; 0.76)

0.67 (0.43; 1.05)

0.8 (0.5; 1.28)

 Heroin

1

1

1

 Amphetamine

0.98 (0.69; 1.39)

0.87 (0.63; 1.21)

0.8 (0.57; 1.14)

 Other

0.73 (0.33; 1.59)

1.27 (0.58; 2.74)

1.22 (0.53; 2.8)

 Heroin (inject)

1

1

1

 Amphetamine (inject)

2.43 (1.64; 3.62)

0.95 (0.67; 1.37)

0.88 (0.6; 1.29)

 Other (inject)

0.49 (0.18; 1.3)

0.40 (0.15; 1.09)

0.43 (0.15; 1.21)

 Cannabis

0.54 (0.33; 0.9)

0.38 (0.23; 0.63)

0.34 (0.21; 0.57)

 Amphetamine (oral)

0.73 (0.33; 1.6)

0.34 (0.15; 0.79)

0.2 (0.08; 0.5)

 Heroine (smoke)

0.39 (0.11; 1.37)

0.29 (0.08; 1.02)

0.23 (0.07; 0.77)

 Alcohol

0.37 (0.22; 0.62)

0.28 (0.16; 0.47)

0.43 (0.25; 0.73)

 Benzodiazepine (oral)

0.44 (0.24; 0.81)

0.43 (0.24; 0.79)

0.48 (0.26; 0.9)

 Buprenorphine (oral)

0.46 (0.23; 0.96)

0.31 (0.15; 0.66)

0.78 (0.37; 1.66)

 Cocaine sniffing)

0.09 (0.02; 0.45)

0.18 (0.05; 0.71)

0.16 (0.05; 0.58)

 Other (non-injectable drugs)

0.36 (0.16; 0.85)

0.39 (0.17; 0.9)

0.22 (0.09; 0.53)

 ≤ 5 years

1

1

1

 6–10 years

1.01 (0.69; 1.5)

0.89 (0.62; 1.28)

0.91 (0.62; 1.33)

 11–15 years

1.11 (0.69; 1.79)

0.96 (0.62; 1.49)

0.8 (0.51; 1.27)

 16–20 years

0.7 (0.42; 1.16)

0.68 (0.43; 1.09)

0.53 (0.33; 0.86)

 21–25 years

0.91 (0.53; 1.57)

0.87 (0.53; 1.4)

0.68 (0.41; 1.12)

 26–30 years

0.67 (0.36; 1.22)

0.58 (0.34; 1)

0.34 (0.2; 0.6)

 31–35 years

0.52 (0.28; 0.98)

0.58 (0.33; 1.04)

0.47 (0.26; 0.85)

 ≥ 36 years

0.72 (0.34; 1.51)

0.4 (0.2; 0.77)

0.2 (0.1; 0.4)

0.87 (0.83; 0.92)

0.94 (0.9; 0.99)

0.89 (0.85; 0.94)