Table 1 Basic demographic characteristics of Subjects According to BMI 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 | BMI < 22.20 | 22.20 ≤ BMI < 24.02 | 24.02 ≤ BMI < 25.73 | 25.73 ≤ BMI < 27.78 | BMI ≥ 27.78 |  |
Female | BMI < 22.43 | 22.43 ≤ BMI < 24.42 | 24.42 ≤ BMI < 26.27 | 26.27 ≤ BMI < 28.58 | BMI ≥ 28.58 |  |
N0. | 25,164 | 25,236 | 25,166 | 25,268 | 25,289 | Â |
High blood pressure |  |  |  |  |  | < 0.001 |
 no | 13,812 (54.89) | 12,206 (48.37) | 11,346 (45.08) | 10,508 (41.59) | 9205 (36.4) |  |
 yes | 11,352 (45.11) | 13,030 (51.63) | 13,820 (54.92) | 14,760 (58.41) | 16,084 (63.6) |  |
Cancer | Â | Â | Â | Â | Â | 0.005 |
 no | 25,137 (99.89) | 25,215 (99.92) | 25,146 (99.92) | 25,246 (99.91) | 25,282 (99.97) |  |
 yes | 27 (0.11) | 21 (0.08) | 20 (0.08) | 22 (0.09) | 7 (0.03) |  |
Stroke | Â | Â | Â | Â | Â | 0.003 |
 no | 25,036 (99.49) | 25,099 (99.46) | 25,056 (99.56) | 25,163 (99.58) | 25,194 (99.62) |  |
 yes | 128 (0.51) | 137 (0.54) | 110 (0.44) | 105 (0.42) | 95 (0.38) |  |
Psychotic illness | Â | Â | Â | Â | Â | 0.009 |
 no | 24,982 (99.28) | 25,107 (99.49) | 25,027 (99.45) | 25,177 (99.64) | 25,136 (99.39) |  |
 yes | 182 (0.72) | 129 (0.51) | 139 (0.55) | 91 (0.36) | 153 (0.61) |  |
Age, years | 72.08 ± 7.75 | 70.54 ± 7.17 | 69.96 ± 6.66 | 69.59 ± 6.49 | 69.29 ± 6.17 | < 0.001 |
sex,% | Â | Â | Â | Â | Â | 0.981 |
 men | 11,619 (46.17) | 11,584 (45.9) | 11,612 (46.14) | 11,642 (46.07) | 11,658 (46.1) |  |
 women | 13,545 (53.83) | 13,652 (54.1) | 13,554 (53.86) | 13,626 (53.93) | 13,631 (53.9) |  |
Marital status, % |  |  |  |  |  | < 0.001 |
 unmarried | 558 (2.22) | 432 (1.71) | 341 (1.36) | 285 (1.13) | 246 (0.97) |  |
 married | 19,847 (78.87) | 20,968 (83.09) | 21,315 (84.7) | 21,686 (85.82) | 21,916 (86.66) |  |
 divorced | 135 (0.54) | 91 (0.36) | 124 (0.49) | 92 (0.36) | 83 (0.33) |  |
 death of a spouse | 4624 (18.38) | 3745 (14.84) | 3386 (13.45) | 3205 (12.68) | 3044 (12.04) |  |
Smoking, % |  |  |  |  |  | < 0.001 |
 Never smokers | 20,950 (83.25) | 21,506 (85.22) | 21,557 (85.66) | 21,879 (86.59) | 22,079 (87.31) |  |
 Former smokers | 537 (2.13) | 591 (2.34) | 611 (2.43) | 623 (2.47) | 678 (2.68) |  |
 Current smokers | 3677 (14.61) | 3139 (12.44) | 2998 (11.91) | 2766 (10.95) | 2532 (10.01) |  |
Alcohol consumption, % |  |  |  |  |  | < 0.001 |
 Never | 23,681 (94.11) | 23,651 (93.72) | 23,364 (92.84) | 23,379 (92.52) | 23,296 (92.12) |  |
 Once in a while | 906 (3.6) | 998 (3.95) | 1113 (4.42) | 1129 (4.47) | 1215 (4.8) |  |
 More than once a week | 243 (0.97) | 277 (1.1) | 305 (1.21) | 350 (1.39) | 352 (1.39) |  |
 Every day | 334 (1.33) | 310 (1.23) | 384 (1.53) | 410 (1.62) | 426 (1.68) |  |
Physical exercise, % |  |  |  |  |  | < 0.001 |
 Never | 16,555 (65.79) | 15,881 (62.93) | 15,014 (59.66) | 14,897 (58.96) | 15,290 (60.46) |  |
 Once in a while | 863 (3.43) | 912 (3.61) | 943 (3.75) | 998 (3.95) | 966 (3.82) |  |
 More than once a week | 1576 (6.26) | 1809 (7.17) | 1937 (7.7) | 1914 (7.57) | 1830 (7.24) |  |
 Every day | 6170 (24.52) | 6634 (26.29) | 7272 (28.9) | 7459 (29.52) | 7203 (28.48) |  |
Residence |  |  |  |  |  | < 0.001 |
 Rural areas | 21,838 (86.78) | 20,703 (82.04) | 20,322 (80.75) | 20,314 (80.39) | 20,365 (80.53) |  |
 Urban areas | 3326 (13.22) | 4533 (17.96) | 4844 (19.25) | 4954 (19.61) | 4924 (19.47) |  |
Blood glucose, mmol/L | 5.44 ± 1.8 | 5.68 ± 1.86 | 5.82 ± 1.91 | 5.91 ± 1.91 | 6.04 ± 1.95 | < 0.001 |