| 2003 | 2009 | 2010 | 2012 | p-trend |
---|---|---|---|---|---|
Total: | |||||
 PDa (95% CI) | |||||
  Low education | 23.1 (19.4–26.9) | 26.9 (24.4–29.4) | 28.3 (25.9–30.8) | 32.2 (29.0–35.5) | <0.001 |
  Medium education | 12.5 (9.2–15.8) | 12.8 (10.9–14.7) | 13.7 (11.9–15.5) | 14.4 (12.5–16.4) | 0.225 |
  High education (ref.) | 0.0 | 0.0 | 0.0 | 0.0 |  |
 SIIb (95% CI) | 0.30 (0.25–0.35) | 0.34 (0.31–0.38) | 0.38 (0.34–0.41) | 0.41 (0.37–0.45) | 0.001 |
Men: | |||||
 PDa (95% CI) | |||||
  Low education | 22.9 (17.9–28.0) | 26.4 (22.8–30.1) | 29.0 (25.4–32.5) | 33.6 (29.3–37.9) | 0.001 |
  Medium education | 15.6 (10.9–20.3) | 15.1 (12.1–18.1) | 17.6 (14.8–20.5) | 17.8 (15.0–20.6) | 0.299 |
  High education (ref.) | 0.0 | 0.0 | 0.0 | 0.0 |  |
 SIIc (95% CI) | 0.30 (0.23–0.38) | 0.36 (0.30–0.41) | 0.39 (0.34–0.44) | 0.44 (0.39–0.49) | 0.004 |
Women: | |||||
 PDa (95% CI) | |||||
  Low education | 23.2 (17.5–28.9) | 27.3 (23.8–30.8) | 27.7 (24.3–31.1) | 30.7 (25.8–35.6) | 0.041 |
  Medium education | 10.3 (5.4–15.1) | 11.6 (9.1–14.0) | 11.2 (8.9–13.6) | 11.4 (8.7–14.2) | 0.637 |
  High education (ref.) | 0.0 | 0.0 | 0.0 | 0.0 |  |
 SIIc (95% CI) | 0.29 (0.22–0.37) | 0.33 (0.29–0.38) | 0.36 (0.32–0.41) | 0.37 (0.32–0.43) | 0.077 |