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Table 1 Subject characteristics by blood pressure status 1

From: Association of dietary pattern and body weight with blood pressure in Jiangsu Province, China

  Blood pressure2 P
  Normal High
N 1845 673  
gender    
Male 831 (45.0) 315 (46.8) 0.43
Female 1014 (55.0) 358 (53.2)  
Age    
20-29 270 (14.6) 10 (1.5) < 0.001
30-39 459 (24.9) 51 (7.6)  
40-49 423 (22.9) 124 (18.4)  
50-59 292 (15.8) 191 (28.4)  
60+ 401 (21.7) 297 (44.1)  
SES    
Low 570 (31.2) 216 (32.3) 0.31
Middle 583 (31.9) 225 (33.6)  
High 672 (36.8) 228 (34.1)  
Active commuting    
None 628 (34.0) 325 (48.3) < 0.001
1-30 min/d 966 (52.4) 268 (39.8)  
>30 min/d 251 (13.6) 80 (11.9)  
Leisure time activity    
None 1704 (92.4) 577 (85.7) < 0.001
1-30 min/d 70 (3.8) 43 (6.4)  
>30 min/d 71 (3.8) 53 (7.9)  
Alcohol drinking    
Never 1590 (86.2) 552 (82.0) 0.005
Low 142 (7.7) 61 (9.1)  
High 113 (6.1) 60 (8.9)  
Salt intake    
< 6 474 (25.7) 154 (22.9) < 0.003
6-9 428 (23.2) 140 (20.8)  
9-14 523 (28.3) 178 (26.4)  
≥14 420 (22.8) 201 (29.9)  
Potassium intake    
< 1.28 478 (25.9) 162 (24.1) 0.57
1.28-1.56 463 (25.1) 163 (24.2)  
1.56-1.94 437 (23.7) 189 (28.1)  
≥1.94 467 (25.3) 159 (23.6)  
BMI    
<18.5 110 (6.0) 18 (2.7) <0.001
18.5-24 1134 (61.5) 266 (39.5)  
24-28 485 (26.3) 238 (35.4)  
≥28 116 (6.3) 151 (22.4)  
  1. 1Data are presented as N (%). Differences between groups were analyzed by chi-square test. 2High blood pressure is defined as SBP ≥ 140 mmHg and/or DBP ≤ 90 mmHg.