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Table 2 Smoking habits among current and former smokers, by sex

From: Tobacco smoking and all-cause mortality in a large Australian cohort study: findings from a mature epidemic with current low smoking prevalence

   Men Women
Never-smoker   45,251 (50%) 74,034 (65%)
Current smoker   7,625 (8%) 8,143 (7%)
Smoking duration (years)  
  Mean ± SD 39.9 ± 9.8 37.1 ± 8.8
  <20 124 (1.6%) 205 (2.5%)
  20–34 2,143 (28%) 3,085 (38%)
  35–49 3,869 (51%) 3,814 (47%)
  ≥50 1,063 (14%) 541 (7%)
Cigarettes/day  
  Mean ± SD 18.9 ± 10.4 16.6 ± 8.6
  ≤14 2,308 (30%) 3,016 (37%)
  15–24 2,931 (38%) 3,324 (41%)
  ≥25 2,222 (29%) 1,632 (20%)
Age at starting smoking (years)   
  Mean ± SD 17.6 ± 5.2 18.7 ± 6.1
  <13 525 (7%) 222 (3%)
  13–17 3,741 (49%) 3,736 (46%)
  18–25 2,408 (32%) 2,863 (35%)
  ≥25 526 (7%) 824 (10%)
Past smoker 37,335 (41%) 32,565 (28%)
Smoking duration (years)  
  Mean ± SD 22.6 ± 12.7 19.8 ± 12.2
  <20 15,669 (42%) 16,305 (50%)
  20–34 12,707 (34%) 10,126 (31%)
  35–49 5,767 (15%) 3,796 (12%)
  ≥50 888 (2%) 351 (1%)
Cigarettes/day  
  Mean ± SD 20.1 ± 13.8 15.2 ± 10.4
  ≤14 12,083 (32%) 16,121 (50%)
  15–24 15,004 (40%) 11,036 (34%)
  ≥25 9,725 (26%) 4,910 (15%)
Age at starting smoking (years)   
  Mean ± SD 17.5 ± 3.8 18.5 ± 4.7
  <13 1,439 (4%) 469 (1%)
  13–17 18,316 (49%) 13,624 (42%)
  18–25 14,238 (38%) 14,363 (44%)
  ≥25 1,621 (4%) 2,600 (8%)
Age at ceasing smoking (years)  
  Mean ± SD 40.1 ± 12.6 38.4 ± 12.5
  <25 3,421 (9%) 4,109 (13%)
  25–34 9,616 (26%) 9,207 (28%)
  35–44 9,548 (26%) 7,461 (23%)
  45–54 7,627 (20%) 6,354 (20%)
  ≥55 5,259 (14%) 3,776 (12%)
  1. Numbers may not add up to total due to missing data.