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 |