Table 1 Age-specific numbers of study subjects and deaths from all causes, cardiovascular disease (CVD), and ischaemic heart disease (IHD) according to income and cardiovascular risk factors: 575 377 male public servants in South Korea, 1994–2003
Men aged 30–44Men aged 45–54Men aged 55–64
No. of subjects (%)No. of deaths fromNo. of subjects (%)No. of deaths fromNo. of subjects (%)No. of deaths from
All causesCVDIHDAll causesCVDIHDAll causesCVDIHD
Income
    High171 338 (49.3)171130310878 684 (49.4)239945116235 958 (52.6)2431530159
    Low176 329 (50.7)299545015680 601 (50.6)444774421132 467 (47.4)3015587156
Cigarette smoking
    Never70 698 (20.3)690912935 008 (22.0)10962025517 318 (25.3)93620955
    Quit66 686 (19.2)7031154438 060 (23.9)12912046718 569 (27.1)129024782
    ⩽10 cigarettes per day51 507 (14.8)7891213922 482 (14.1)11612135710 749 (15.7)101921552
    11–20 cigarettes per day95 178 (27.4)14802468637 823 (23.7)195434310914 062 (20.6)141829882
    >20 cigarettes per day63 598 (18.3)10441806625 912 (16.3)1344233857727 (11.3)78314844
Systolic/diastolic blood pressure (mmHg)
    <140 and <90259 770 (74.7)308139615295 722 (60.1)358444115433 362 (48.8)232031895
    140–159 or 90–9973 354 (21.1)11982148046 221 (29.0)213441113423 374 (34.2)1855413124
    ⩾160 or ⩾10014 543 (4.2)4271433217 342 (10.9)11283438511 689 (17.1)127138696
Serum total cholesterol (mmol/l)
    <4.178 495 (22.6)11211404324 986 (15.7)1468188369871 (14.4)99616939
    4.1–5.1158 991 (45.7)19942919368 140 (42.8)278944313828 620 (41.8)2180428108
    5.2–6.185 809 (24.7)11612288148 823 (30.7)183435412521 835 (31.9)1589343107
    ⩾6.224 372 (7.0)430944717 336 (10.9)755210748099 (11.8)68117761
Fasting serum glucose (mmol/l)
    <7.0341 267 (98.2)4463719251151 722 (95.3)6224109334263 656 (93.0)4768966269
    ⩾7.06400 (1.8)24334137563 (4.7)622102314769 (7.0)67815146
Four risk factors (RF)
    No RF94 609 (27.2)831903137 471 (23.5)10711193713 978 (20.4)7177220
    1 or more RF253 058 (72.8)3875663233121 814 (76.5)5775107633654 447 (79.6)47291045295
Total347 667 (100.0)4706753264159 285 (100.0)6846119537368 425 (100.0)54461117315