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. 2015 Mar 18;10(3):e0118500. doi: 10.1371/journal.pone.0118500

Table 2. Prevalence (95% CI) of current active smoking among males and females by selected characteristics (2001–2010).

Total Male Female
Characteristics 2001 survey 2010 survey P1 2001 survey 2010 survey P1 2001 survey 2010 survey P1
(n = 2,277) (n = 2,102) (n = 943) (n = 848) (n = 1,334) (n = 1,254)
% (95% CI) % (95% CI) % (95% CI) % (95% CI) % (95% CI) % (95% CI)
Total 15.4 (13.9–16.9) 11.0 (9.7–12.3) <0.001 24.7 (22.0–27.5) 21.2 (18.5–24.0) 0.081 8.8 (7.3–10.3) 4.1 (3.0–5.2) <0.001
Age group
    60- 15.9 (14.0–17.8) 12.8 (10.5–15.1) 0.044 27.2 (23.6–30.8) 30.7 (25.3–36.2) 0.274 8.1 (6.2–9.9) 3.4 (1.8–4.9) <0.001
    70- 15.2 (12.6–17.8) 10.2 (8.4–12.0) 0.002 22.7 (18.0–27.4) 18.0 (14.4–21.6) 0.115 9.6 (6.8–12.5) 4.7 (3.1–6.4) 0.002
    80- 9.0 (3.3–14.7) 7.7 (3.9–11.5) 0.707 2.6 (0.0–8.0) 10.4 (4.8–16.1) 0.135 12.9 (4.3–21.5) 3.8 (0.0–8.1) 0.045
    P2 0.177 0.064 0.002 <0.001 0.327 0.495
Marital status
    Married 15.5 (13.8–17.1) 11.3 (9.8–12.8) <0.001 24.8 (22.0–27.7) 21.3 (18.4–24.1) 0.085 7.6 (6.0–9.2) 3.4 (2.3–4.6) <0.001
    Widowed or divorced 14.9 (11.2–18.6) 9.5 (6.3–12.6) 0.030 23.2 (13.0–33.4) 20.9 (10.9–30.9) 0.837 12.9 (9.1–16.8) 6.5 (3.5–9.5) 0.012
    P2 0.775 0.332 0.761 0.945 0.004 0.025
Occupation
    White collar 13.0 (11.0–15.0) 9.5 (7.3–11.6) 0.02 19.9 (16.8–23.1) 20.6 (15.9–25.2) 0.821 4.5 (2.6–6.3) 1.7 (0.4–2.9) 0.017
    Light physical labor 17.0 (14.7–19.3) 9.3 (7.3–11.4) <0.001 35.0 (28.9–41.0) 15.7 (12.0–19.4) <0.001 11.4 (9.1–13.6) 3.1 (1.4–4.9) <0.001
    Hard physical labor 21.6 (14.9–28.3) 14.7 (12.0–17.5) 0.039 30.5 (20.3–40.7) 33.9 (26.9–40.9) 0.587 10.6 (3.0–18.2) 7.1 (4.7–9.5) 0.31
    P2 0.004 0.002 <0.001 <0.001 <0.001 <0.001
Education level (years)
    0–6 17.9 (15.4–20.3) 12.6 (9.9–15.3) 0.006 32.1 (26.3–37.8) 24.3 (17.3–31.3) 0.099 12.6 (10.2–15.1) 8.6 (5.9–11.2) 0.034
    7–12 15.0 (12.5–17.5) 10.7 (8.6–12.8) 0.009 27.2 (22.5–31.9) 26.9 (21.8–32.0) 0.921 5.4 (3.3–7.5) 2.2 (1.0–3.4) 0.006
    13∼ 11.3 (8.6–14.1) 10.0 (7.7–12.2) 0.445 16.4 (12.4–20.4) 16.0 (12.4–19.6) 0.881 2.2 (0.1–4.3) 0.8 (0.0–1.8) 0.199
    P2 0.004 0.315 <0.001 0.001 <0.001 <0.001

P1 is for 2001 vs. 2010;

P2 is for the comparison of characteristics groups.