Table 1 Survey variables –weighted estimates, based on 7,829 respondents

Age, mean (SD) years

48.86 (0.34)

Age groups, N (%)[95%CI]

 15–39 y.o

2 581 983 (34%) [2 428 208; 2 735 758]

 40–64 y.o

3 285 758 (44%) [3 136 226; 3 435 289]

 65 + y.o

1 677 012 (22%) [1 575 160; 1 778 864]

Gender, males N (%)[95%CI]

3 655 177 (48%) [3 522 770; 3 787 584]

Education, N (%)[95%CI]

 No education or low school diploma

389 829 (5%) [336 169; 443 489]

 Low education

892 111 (12%) [802 728;;981 494]

 Secondary education

2 423 262 (32%) [2 265 392; 2 581 132]

 High education

3 747 714 (50%) [3 556 339; 3 939 090]

Smoking status, N (%)[95%CI]

 Daily smoker

1 161 611 (15%) [1 068 527; 1 254 695]

 Occasional smoker

301 872 (4%) [255 408; 348 336]

 Former smoker

1 739 813 (23%) [1 635 811; 1 843 814]

 Never smoked

4 341 457 (58%) [4 169 599; 4 513 315]

Smoking status with by level of exposure, N (%)[95%CI]

 Light smoker (< 10 cig/day)

533 995 (7%) [473 811; 594 179]

 Moderate smoker (10 to 20 cig/day)

775 460 (10%) [697 827; 853 093]

 Heavy smoker (≥ 20 cig/day)

154 028 (2%) [121 308; 186 748]

 Former smoker

1 739 813 (23%) [1 635 811; 1 843 814]

 Never smoked

4 341 457 (58%) [4 169 599; 4 513 315]