|   | 
          | 
        No.(%) of subjects | 
          | 
          | 
          | 
      
      
        | Variable | 
        Total | 
        Cases | 
        Controls | 
        OR (95%CI) | 
        P-value | 
      
      
        Age group 
          <40 
          40-55 
          55-70 
          >70 | 
         96 (17.4) 
          143 (25.9) 
          164 (29.8) 
          148 (26.9) | 
         39 (13.9) 
          60 (21.4) 
          101 (36.1) 
          80 (28.6) | 
         57 (21.0) 
          83 (30.6) 
          63 (23.3) 
          68 (25.1) | 
         1.00 
          0.94 (0.56-1.60) 
          0.45 (0.27-0.76) 
          0.54 (0.32-0.90) | 
         0.83 
          0.003 
          0.02 | 
      
      
        Gender 
          Female 
          Male | 
         341 (61.9) 
          210 (38.1) | 
         176 (62.9) 
          104 (37.1) | 
         165 (60.9) 
          106 (39.1) | 
         1.00 
          1.08 (0.77-1.53) | 
         0.634 | 
      
      
        Current    marital status 
          Single 
          Married | 
         34    (06.2) 
          517 (93.8) | 
         24 (08.6) 
          256    (91.4) | 
         10    (03.7) 
          261 (96.3) | 
         1.00 
          2.44 (1.14 – 5.21) | 
         0.021 | 
      
      
        Education    level 
          University 
          Secondary 
          Primary 
          Illiterate | 
         07 (01.3) 
          85 (15.4) 
          91 (16.5) 
          368 (66.8) | 
         00 (00.0) 
          11 (03.9) 
          30 (10.7) 
          239    (85.4)  | 
         07    (02.6) 
          74    (27.3) 
          61    (22.5) 
          129 (47.6) | 
         1.00 
          0.43 (0.019-9.81) 
          0.13 (0.006-0.95) 
          0.03 (0.002-0.77) | 
         0.59 
          0.20 
          0.034 | 
      
      
        Income    level 
          >100.000DZD 
          <100.000DZD without | 
         165 (29.9) 
          175 (31.8) 
          211 (38.3) | 
         112    (40.0) 
          97 (34.6) 
          71 (25.4) | 
         53    (19.5) 
          78    (28.8) 
          140 (51.7) | 
         1.00 
          1.69 (1.09-2.64) 
          4.16 (2.70-6.43) | 
         0.019 
          <0.0001  | 
      
      
        No. of children 
          Without 
          ≤5 
          >5 | 
         140 (25.4) 
          252 (45.7) 
          159 (28.9) | 
         17 (06.1) 
          132    (47.1) 
          131    (46.8) | 
         123 (45.4) 
          115 (42.4) 
          33    (12.2) | 
         1.00 
          0.11 (0.067-0.207) 
          0.03 (0.018-0.066) | 
        <0.0001 
          <0.0001  | 
      
      
        Type    of residence 
          Villa 
          House 
          Apartment | 
         18    (03.3) 
          457 (82.9) 
          76    (13.8) | 
        05 (01.8) 
          245    (87.5) 
          30 (10.7) | 
         13    (04.8) 
          212 (78.3) 
          46    (16.9) | 
         1.00 
          0.33 (0.11-0.94) 
          0.59 (0.19-1.82) | 
         0.04 
          0.35 | 
      
      
        No.    of people living at home 
          ≤5 
          >5 | 
         239 (43.4) 
          312 (56.6) | 
         93 (33.2) 
          187 (66.8) | 
         146 (53.9) 
          125 (46.1) | 
         1.00 
          0.42 (0.30-0.60) | 
        <0.0001 | 
      
      
        Health    insurance 
          Yes 
          No | 
         313 (56.8) 
          238 (43.2) | 
         183    (65.4) 
          97 (34.6) | 
         130 (47.9) 
          141 (52.1) | 
         1.00 
          2.04 (1.45-2.88) | 
        <0.0001 | 
      
      
        Residence 
          Rural 
          Urban | 
         191 (34.7) 
          360 (65.3) | 
         96 (34.3) 
          184    (65.7) | 
         95    (35.0) 
          176 (64.9) | 
         1.00 
          0.96 (0.68-1.37) | 
         0.84 | 
      
    
    *Abbreviations: OR-odds ratio; CI-confidence interval; DZD- Algeria Dinars, 1EUR=96.321 DZD