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Table 5 Odds ratios (95% confidence intervals) for anya and frequentb cannabis use according to cumulative number of sociodemographic adversitiesc in the different study years, among boys and girls in the 8th or 9th grades of comprehensive school in Finland

From: Changes in cannabis use according to socioeconomic status among Finnish adolescents from 2000 to 2015

  2000–2001 2002–2003 2004–2005 2006–2007 2008–2009 2010–2011 2012–2013 2014–2015
Boys, any cannabis use
 Number of adversities
  0 Ref Ref Ref Ref Ref Ref Ref Ref
  1 1.4 (1.3–1.6) 1.6 (1.5–1.7) 1.7 (1.6–1.8) 1.8 (1.6–1.9) 1.7 (1.5–1.8) 1.6 (1.5–1.8) 1.7 (1.6–1.9) 1.9 (1.7–2.1)
  2 2.5 (2.3–2.7) 2.9 (2.7–3.2) 2.7 (2.4–3.0) 3.4 (3.1–3.8) 2.8 (2.5–3.1) 2.9 (2.6–3.1) 2.9 (2.6–3.2) 2.9 (2.6–3.3)
  3 3.6 (3.0–4.3) 4.8 (4.1–5.7) 6.2 (5.2–7.3) 8.4 (7.0–10.0) 8.0 (6.7–9.5) 5.7 (4.9–6.7) 5.6 (4.8–6.5) 6.2 (5.0–7.6)
  4 12.0 (8.2–17.6) 20.7 (14.5–29.5) 27.6 (19.0–39.9) 46.6 (32.4–67.2) 54.2 (37.4–78.4) 40.2 (28.9–56.0) 23.9 (18.2–31.5) 51.4 (36.6–72.0)
Girls, any cannabis use
 Number of adversities
  0 Ref Ref Ref Ref Ref Ref Ref Ref
  1 1.5 (1.3–1.6) 1.6 (1.4–1.7) 1.9 (1.7–2.0) 2.0 (1.8–2.2) 1.8 (1.6–1.9) 1.7 (1.6–1.9) 2.0 (1.8–2.2) 2.3 (2.0–2.6)
  2 2.3 (2.1–2.6) 2.5 (2.2–2.7) 3.0 (2.7–3.4) 3.6 (3.2–4.0) 3.2 (2.8–3.6) 3.1 (2.8–3.4) 3.3 (3.0–3.7) 4.0 (3.4–4.6)
  3 2.7 (2.2–3.2) 3.5 (2.9–4.2) 4.4 (3.6–5.4) 6.0 (4.9–7.4) 5.5 (4.5–6.9) 3.9 (3.2–4.7) 4.4 (3.7–5.3) 6.9 (5.5–8.7)
  4 4.6 (2.8–7.7) 8.1 (5.2–12.6) 20.4 (13.4–31.1) 21.8 (14.5–33.0) 31.6 (21.3–46.9) 23.3 (17.0–32.0) 21.0 (15.4–28.6) 36.6 (23.9–55.9)
Boys, frequent cannabis use
 Number of adversities
  0 Ref Ref Ref Ref Ref Ref Ref Ref
  1 1.5 (1.3–1.7) 1.7 (1.5–1.9) 1.6 (1.4–1.8) 1.8 (1.6–2.1) 1.6 (1.4–1.9) 1.6 (1.4–1.8) 1.9 (1.6–2.1) 2.1 (1.8–2.5)
  2 2.9 (2.5–3.4) 3.3 (2.8–3.8) 2.7 (2.2–3.2) 4.2 (3.6–5.1) 3.2 (2.7–3.9) 3.1 (2.7–3.6) 3.3 (2.9–3.9) 3.3 (2.8–4.0)
  3 6.3 (5.0–8.0) 7.6 (6.1–9.4) 10.0 (8.0–12.5) 15.6 (12.4–19.7) 14.5 (11.5–18.3) 8.9 (7.3–11.0) 8.9 (7.2–11.0) 7.3 (5.6–9.6)
  4 29.5 (19.7–44.2) 41.8 (29.2–59.8) 54.3 (37.3–79.1) 105.3 (73.5–150.9) 131.7 (92.2–188.2) 74.5 (54.4–102.0) 62.9 (47.5–83.4) 107.3 (76.8–150.0)
Girls, frequent cannabis use
 Number of adversities
  0 Ref Ref Ref Ref Ref Ref Ref Ref
  1 1.8 (1.5–2.1) 1.6 (1.3–1.9) 2.5 (2.0–3.1) 2.4 (1.9–3.0) 1.8 (1.5–2.3) 2.0 (1.7–2.5) 2.5 (2.0–3.0) 3.0 (2.3–3.9)
  2 2.9 (2.4–3.6) 3.2 (2.6–3.9) 4.0 (3.2–5.0) 5.0 (3.9–6.3) 3.4 (2.6–4.4) 3.9 (3.1–4.9) 5.0 (4.0–6.2) 5.8 (4.5–7.6)
  3 3.6 (2.6–5.2) 6.2 (4.6–8.3) 9.0 (6.4–12.5) 12.5 (8.9–17.7) 10.3 (7.2–14.6) 8.1 (5.9–11.1) 8.8 (6.5–12.0) 10.8 (7.5–15.4)
  4 7.9 (3.6–17.4) 18.6 (10.5–32.7) 81.0 (50.9–129.0) 77.1 (48.1–123.7) 111.6 (72.7–171.5) 89.1 (62.4–127.1) 66.4 (46.2–95.4) 101.9 (64.1–162.3)
  1. aUsed cannabis at least once in one’s lifetime
  2. bUsed cannabis at least five times in one’s lifetime
  3. cSocioeconomic adversities included not living with both parents, both parents with basic education only, and both parents unemployed. Adolescents living with both parents, with at least one parent with higher than basic education and both parents employed used as a reference group