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. 2018 Dec 12;13(12):e0207699. doi: 10.1371/journal.pone.0207699

Table 1. Socio-demographic characteristics of enrolled participants.

Variables Cases
N = 88
n (%)
Controls
N = 176
n (%)
OR (95%CI) P value
Age (years)
    [18–23] 10 (11.4) 21 (11.9) Reference 1.000
    [23–28] 24 (27.3) 47 (26.7) 0.93 (0.37–2.29)
    [28–33] 35 (39.8) 70 (39.8) 0.95 (0.40–2.24)
    [33–38] 13 (14.6) 26 (14.6) 0.95 (0.34–2.60)
    [38–43] 5 (5.7) 10 (5.7) 0.95 (0.25–3.53)
    ≥43 1 (1.1) 2 (1.1) 0.95 (0.07–11.78)
Marital status
    Single 26 (29.5) 45 (25.6) 0.556
    Married or living together 62 (70.5) 131 (74.4) 0.81 (0.46–1.44)
Educational level
    Primary school 14 (15.9) 11 (6.4) Reference <0.001
    Secondary school 54 (61.4) 85 (48.3) 2.00 (0.84–4.73)
    High school 20 (22.7) 80 (45.5) 5.35 (2.10–13.64)
Professional category
    Professional and managerial occupations 3 (3.4) 11 (6.3) Reference 0.125
    Intermediates professions 12 (13.6) 32 (18.2) 0.72 (0.17–3.06)
    Services and sales staff 38 (43.2) 51(29.0) 0.36 (0.09–1.40)
    Unemployed 35 (39.8) 82 (46.6) 0.63 (0.16–2.43)
Smoking
    Yes 21 (23.9) 18 (10.2) 2.75 (1.37–5.49) 0.003
    No 67 (76.1) 158 (89.8)

OR odds ratio, CI Confidence interval.