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Table 3 Age-adjusted prevalence and 95% confidence interval for smoking habits

From: Relationship between Work Hours and Smoking Behaviors in Korean Male Wage Workers

  Short work hours* Reference work hours† Long work hours‡ Total
Smoking in 2008 Number of population in 2008 100 1209 735 2044
Number of smokers in 2008 (%) 66(66.0) 670(55.4) 451(61.4) 1187 (58.1)
Age-adjusted prevalence 64.9(45.1-84.7) 54.7(50.5-59.0) 60.6(54.9-66.4) 57.6(54.3-60.9)
Continuous smoking§ Number of smokers in 2007 65 629 441 1135
Number continuously smoking (%) 56(86.2) 549(87.3) 389(88.2) 994 (87.6)
Age-adjusted prevalence 83.1(53.2-100.0) 86.8(79.3-94.4) 88.1(78.7-97.6) 87.2(81.6-92.8)
Smoking cessation Number of smokers in 2007 65 629 441 1135
Number who quit smoking (%) 9(13.8) 80(12.7) 52(11.8) 141(12.4)
Age-adjusted prevalence 16.9(1.1-32.8) 13.2 (10.2-16.2) 11.9 (8.4-15.3) 12.8 (10.6-15.0)
Start smoking¶ Number of nonsmokers in 2007 35 580 294 909
Number who started smoking (%) 10(28.6) 121(20.9) 62(21.1) 193(21.2)
Age-adjusted prevalence 33.2(9.1-57.2) 20.7(17.0-24.4) 20.8(15.5-26.2) 21.3(18.2-24.3)
  1. *Weekly work hours less than 35, †Weekly work hours 35 or more, less than 52, ‡Weekly work hours more than 52, §Smokers in 2008/smokers in 2007, Adults quitting smoking in 2008/smokers in 2007, ¶Smokers in 2008/non-smokers in 2007.