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Table 2 Basic demographic characteristics of Subjects According to WC Quintiles

From: Association of body mass index and waist circumference with high blood pressure in older adults

Characteristics First Quintile Second Quintile Third Quintile Fourth Quintile Fifth Quintile P for trend
Male WC < 81 81 ≤ WC < 86 86 ≤ WC < 90 90 ≤ WC < 96 WC ≥ 96  
Female WC < 79 79 ≤ WC < 84 84 ≤ WC < 89 89 ≤ WC < 95 WC ≥ 95  
N0. 23,098 23,498 24,971 26,736 27,820  
High blood pressure       < 0.001
 no 12,346 (53.45) 11,421 (48.6) 11,219 (44.93) 11,539 (43.16) 10,552 (37.93)  
 yes 10,752 (46.55) 12,077 (51.4) 13,752 (55.07) 15,197 (56.84) 17,268 (62.07)  
Age, years 71.29 ± 7.65 70.48 ± 7.15 69.96 ± 6.79 69.86 ± 6.57 70.01 ± 6.51 < 0.001
sex,%       0.001
 men 10,850 (46.97) 10,887 (46.33) 10,190 (40.81) 13,076 (48.91) 13,112 (47.13)  
 women 12,248 (53.03) 12,611 (53.67) 14,781 (59.19) 13,660 (51.09) 14,708 (52.87)  
Cancer       0.076
 no 23,075 (99.9) 23,479 (99.92) 24,949 (99.91) 26,720 (99.94) 27,803 (99.94)  
 yes 23 (0.1) 19 (0.08) 22 (0.09) 16 (0.06) 17 (0.06)  
Stroke       0.008
 no 22,974 (99.46) 23,375 (99.48) 24,869 (99.59) 26,623 (99.58) 27,707 (99.59)  
 yes 124 (0.54) 123 (0.52) 102 (0.41) 113 (0.42) 113 (0.41)  
Psychotic illness       0.091
 no 22,937 (99.3) 23,384 (99.51) 24,835 (99.46) 26,613 (99.54) 27,660 (99.42)  
 yes 161 (0.7) 114 (0.49) 136 (0.54) 123 (0.46) 160 (0.58)  
Marital status, %       < 0.001
 unmarried 546 (2.36) 427 (1.82) 312 (1.25) 289 (1.08) 288 (1.04)  
 married 18,446 (79.86) 19,404 (82.58) 21,106 (84.52) 22,908 (85.68) 23,868 (85.79)  
 divorced 120 (0.52) 99 (0.42) 106 (0.42) 103 (0.39) 97 (0.35)  
 death of a spouse 3986 (17.26) 3568 (15.18) 3447 (13.8) 3436 (12.85) 3567 (12.82)  
Smoking, %       < 0.001
 Never smokers 19,441 (84.17) 19,920 (84.77) 21,755 (87.12) 22,749 (85.09) 24,106 (86.65)  
 Former smokers 469 (2.03) 534 (2.27) 555 (2.22) 748 (2.8) 734 (2.64)  
 Current smokers 3188 (13.8) 3044 (12.95) 2661 (10.66) 3239 (12.11) 2980 (10.71)  
Alcohol consumption, %      < 0.001
 Never 21,794 (94.35) 22,082 (93.97) 23,500 (94.11) 24,555 (91.84) 25,440 (91.45)  
 Once in a while 799 (3.46) 913 (3.89) 927 (3.71) 1322 (4.94) 1400 (5.03)  
 More than once a week 208 (0.9) 217 (0.92) 233 (0.93) 406 (1.52) 463 (1.66)  
 Every day 297 (1.29) 286 (1.22) 311 (1.25) 453 (1.69) 517 (1.86)  
Physical exercise, %       < 0.001
 Never 14,960 (64.77) 14,768 (62.85) 15,405 (61.69) 15,830 (59.21) 16,674 (59.94)  
 Once in a while 808 (3.5) 835 (3.55) 996 (3.99) 998 (3.73) 1045 (3.76)  
 More than once a week 1507 (6.52) 1790 (7.62) 1871 (7.49) 1962 (7.34) 1936 (6.96)  
 Every day 5823 (25.21) 6105 (25.98) 6699 (26.83) 7946 (29.72) 8165 (29.35)  
Residence       < 0.001
 Rural areas 20,201 (87.46) 20,096 (85.52) 20,773 (83.19) 21,110 (78.96) 21,362 (76.79)  
 Urban areas 2897 (12.54) 3402 (14.48) 4198 (16.81) 5626 (21.04) 6458 (23.21)  
Blood glucose, mmol/L 5.44 ± 1.71 5.64 ± 1.81 5.76 ± 1.88 5.9 ± 1.97 6.08 ± 2.01 < 0.001
  1. Data are shown as mean ± SD or n (%). WC waist circumference; Residence, area of residence; Blood glucose, Fasting plasma glucose