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Table 1 Characteristics of participants aged 20 and older by occupational groups in three Korean National Health and Nutrition Examination Surveys

From: Prevalence and changes in chronic diseases among South Korean farmers: 1998 to 2005

  1998 2001 2005
  Farmers Manual Non-manual Totala Farmers Manual Non-manual Total Farmers Manual Non-manual Total
  (n = 3,639) (n = 4,677) (n = 8,101) (n = 27,201) (n = 1,714) (n = 4,996) (n = 9,193) (n = 26,785) (n = 1,732) (n = 4,966) (n = 8,358) (n = 25,161)
Sex             
Men 1,844 (50.7) 3,364 (71.9) 4,649 (57.4) 12,853 (47.3) 894 (52.2) 3,642 (72.9) 5,149 (56.0) 12,615 (47.1) 905 (52.3) 3,492 (70.3) 4,478 (53.6) 11,722 (46.6)
Women 1,795 (49.3) 1,313 (28.1) 3,452 (42.6) 14,348 (52.8) 820 (47.8) 1,354 (27.1) 4,044 (44.0) 14,170 (52.9) 827 (47.8) 1,474 (29.7) 3,880 (46.4) 13,439 (53.4)
Age (years) 55.3 ± 12.2 41.9 ± 11.3 37.7 ± 10.6 44.0 ± 15.7 57.6 ± 11.4 43.1 ± 11.1 38.4 ± 10.8 44.0 ± 15.5 59.4 ± 11.0 45.2 ± 11.5 39.1 ± 11.0 45.7 ± 15.8
Educational level            
≤ Elementary 2,450 (67.3) 1,191 (25.5) 623 (7.7) 7,729 (28.4) 1,151 (67.2) 994 (19.9) 544 (5.9) 5,837 (21.8) 1,103 (63.7) 997 (20.1) 420 (5.0) 5,561 (22.1)
Middle 577 (15.9) 1,056 (22.6) 742 (9.2) 3,705 (13.6) 293 (17.1) 1,031 (20.7) 700 (7.6) 3,285 (12.3) 300 (17.3) 924 (18.6) 514 (6.2) 2,873 (11.4)
High 544 (15.0) 2,156 (46.1) 3,287 (40.6) 9,572 (35.2) 227 (13.3) 2,456 (49.2) 3,540 (38.6) 9,820 (36.7) 274 (15.8) 2,479 (50.0) 2,833 (33.9) 8,618 (34.3)
≥ University 68 (1.9) 274 (5.9) 3,449 (42.6) 6,195 (22.8) 42 (2.5) 507 (10.2) 4,387 (47.8) 7,790 (29.1) 55 (3.2) 562 (11.3) 4,589 (54.9) 8,081 (32.2)
Marital status            
Single 101 (2.8) 646 (13.8) 1,689 (20.9) 4,499 (16.5) 34 (2.0) 643 (12.9) 2,116 (23.0) 4,791 (17.9) 39 (2.3) 663 (13.4) 2,120 (25.4) 4,657 (18.5)
Married 3,139 (86.3) 3,625 (77.5) 6,080 (75.1) 19,645 (72.2) 1,489 (86.9) 3,829 (76.6) 6,608 (71.9) 18,952 (70.8) 1,480 (85.5) 3,683 (74.2) 5,689 (68.1) 17,212 (68.5)
Others 399 (11.0) 406 (8.7) 332 (4.1) 3,057 (11.2) 190 (11.1) 524 (10.5) 467 (5.1) 3,036(11.3) 213 (12.3) 619 (12.5) 549 (6.6) 3,266 (13.0)
Income b 85.3 ± 83.7 127.4 ± 79.8 177.3 ± 110.3 132.2 ± 101.7 105.3 ± 77.2 163.6 ± 93.2 227.9 ± 132.0 180.1 ± 123.5 155.4 ± 140.5 210.2 ± 125.7 305.7 ± 176.1 234.8 ± 165.8
Area             
Rural 3,390 (93.2) 1,354 (29.0) 1,650 (20.4) 9,520 (35.0) 1,564 (91.3) 890 (17.8) 1,216 (13.2) 5,639 (21.1) 1,497 (86.4) 858 (17.3) 937 (11.2) 4,964 (19.7)
Urban 249 (6.8) 3,323 (71.1) 6,451 (79.6) 17,681 (65.0) 150 (8.8) 4,106 (82.2) 7,977 (86.8) 21,146 (79.0) 235 (13.6) 4,108 (82.7) 7,421 (88.8) 20,197 (80.3)
Smoking status c            
Never 681 (55.6) 598 (37.7) 1,343 (50.6) 4,965 (56.3) 237 (55.8) 572 (40.1) 1,531 (53.8) 4,762 (60.1) 264 (52.9) 579 (36.4) 1,414 (53.5) 4,354 (56.6)
Former 130 (10.6) 164 (10.3) 239 (9.0) 776 (8.8) 45 (10.6) 150 (10.5) 274 (9.6) 710 (9.0) 117 (23.5) 296 (18.6) 467 (17.7) 1,271 (16.5)
Current 414 (33.8) 825 (52.0) 1,075 (40.5) 3,082 (34.9) 143 (33.7) 706 (49.4) 1,038 (36.5) 2,449 (30.9) 118 (23.7) 716 (45.0) 763 (28.9) 2,069 (26.9)
Alcohol consumption frequency c           
None 560 (45.7) 371 (23.4) 630 (23.7) 2,952 (33.5) 236 (55.9) 546 (38.5) 1,152 (40.7) 3,975 (50.4) 279 (55.9) 566 (35.6) 1,031 (39.0) 3,718 (48.3)
   ≤ 2/week 334 (27.3) 717 (45.2) 1,310 (49.3) 3,875 (43.9) 106 (25.1) 589 (41.5) 1,291 (45.6) 2,923 (37.1) 98 (19.6) 644 (40.5) 1,214 (45.9) 2,829 (36.8)
   ≥ 3/week 331 (27.0) 499 (31.4) 717 (27.0) 1,996 (22.6) 80 (19.0) 285 (20.1) 391 (13.8) 982 (12.5) 122 (24.5) 381 (24.0) 399 (15.1) 1,147 (14.9)
Medical check-up c (past 2 years)           
   Yes 533 (43.5) 859 (54.1) 1,599 (60.2) 4,268 (48.4) 195 (45.9) 754 (52.9) 1,581 (55.6) 3,799 (48.0) 282 (56.5) 848 (53.3) 1,520 (57.5) 3.906 (50.8)
   No 692 (56.5) 728 (45.9) 1,058 (39.8) 4,555 (51.6) 230 (54.1) 671 (47.1) 1.262 (44.4) 4,116 (52.0) 217 (43.5) 742 (46.7) 1,124 (42.5) 3,787 (49.2)
  1. Data were number (%) or mean ± SD
  2. aTotal population included farmers, manual workers, non-manual workers, and others
  3. bUnit is 10 thousand Korean won/month
  4. cOnly a third of total participants had these information