Table 1

General characteristics of the National Health Insurance Service-Health Screening Cohort subjects at baseline (2002–2003)

Variablesn%
SexMen279 12554.2
Women235 74145.8
Age40–44129 97925.2
 Mean: 52.64145–49107 00220.8
 SD: 9.63550–5480 08015.6
55–5964 95212.6
60–6459 32811.5
65–6941 8288.1
70–7421 6154.2
75–7910 0822.0
RegionSeoul metropolitan city89 34417.4
Other metropolitan cities141 05527.4
Non-metropolitan area284 46755.3
Insurance typeSelf-employed insured197 99238.5
Employed insured316 35961.4
Medical aid beneficiary5150.0
DisabilityNo511 96499.4
Yes29020.6
No of participants (biennial) in 2002–20132002–2003514 866100.0
2004–2005334 96665.1
2006–2007352 15868.4
2008–2009361 04370.1
2010–2011364 75770.9
2012–2013345 69367.1
The frequency of biennial screening participation in 2002–20136162 78231.6
5129 78625.2
488 75517.2
358 62811.4
242 0428.2
132 8736.4
Risk factors in 2002–2003 (baseline)Men/WomenMen %/Women%
Cigarette smokingNon-smoker112 577/218 14742.3/96.2
Ex-smoker41 519/217015.6/1.0
Current smoker112 143/647642.1/2.9
Smoking duration<10 years18 724/310812.2/36.0
10–29 years93 620/364660.9/42.2
≥30 years41 318/189226.9/21.9
Alcohol drinkingRarely96 441/189 72135.1/82.5
2–3 times per month52 995/24 10419.3/10.5
More than once per week125 688/16 13445.7/7.0
ExerciseNone134 524/153 34249.7/67.0
1–2 times per week80 104/37 73829.6/16.5
More than three times per week55 916/37 66920.7/16.5