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Table 1 Subject characteristics according to frequency of meat consumption per week

From: Red meat and chicken consumption and its association with high blood pressure and obesity in South Korean children and adolescents: a cross-sectional analysis of KSHES, 2011–2015

Merged 2011-2015a   Consumption of meat per week  
Variables   <1 1–2 3–5 >5  
   n (%)c or Mean (SEM) P- valueb
Subjects n (%)c 136,739 (100) 4,801 (3.4) 70,193 (51.8) 48,538 (37.1) 10,165 (7.7) <0.001
 Girls 64,760 (47.7) 2,428 (3.6) 33,992 (53.1) 22,656 (36.2) 4,456 (7.1) <0.001
 Boys 71,979 (52.3) 2,373 (3.1) 36,201 (50.7) 25,882 (37.9) 5,709 (8.3) <0.001
HBP n (%)c 9,918 (7.7) 387 (8.2) 5,190 (7.7) 3,610 (7.8) 731 (7.2) <0.001
 Systolic HBP 6,075 (4.8) 259 (5.6) 3,287 (5.0) 2,036 (4.6) 405 (4.3) <0.001
 Diastolic HBP 6,704 (5.3) 245 (5.4) 3,302 (5.2) 2,458 (5.4) 520 (5.1) <0.001
Obesity, n (%)c 9,528 (7.6) 399 (9.1) 5,337 (8.2) 3,203 (6.9) 589 (6.3) <0.001
9 years Anthropometric characteristics     
n = 36,733  Height, cm 138.80 (0.2) 138.90 (0.1) 138.61 (0.1) 139.10 (0.3) 0.007
   BMI, kg/m2 18.53 (0.1) 18.46 (0.0) 18.34 (0.0) 18.29 (0.1) <0.001
   Obesity, n (%)c 138 (9.8) 1,736 (7.9) 694 (7.0) 53 (6.2) 0.001
  Blood pressure      
   Systolic BP, mmHg 99.64 (0.4) 99.00 (0.2) 99.13 (0.3) 98.97 (0.6) 0.004
   Diastolic BP, mmHg 60.48 (0.3) 60.22 (0.2) 60.44 (0.2) 60.08 (0.6) 0.114
   HBP, n (%)c 106 (7.1) 1,576 (6.9) 657 (6.6) 58 (6.4) <0.001
12 years Anthropometric characteristics     
n = 49,280  Height, cm 156.99 (0.2) 157.28 (0.1) 157.51 (0.1) 157.92 (0.2) <0.001
   BMI, kg/ m2 20.59 (0.1) 20.48 (0.0) 20.14 (0.0) 20.13 (0.1) <0.001
   Obesity, n (%c 163 (8.5) 2,117 (8.1) 953 (6.0) 128 (5.5) 0.001
  Blood pressure      
   Systolic BP, mmHg 105.08 (0.4) 105.22 (0.2) 105.17 (0.2) 105.33 (0.3) 0.327
   Diastolic BP, mmHg 63.32 (0.2) 63.33 (0.1) 63.39 (0.1) 63.20 (0.2) 0.204
   HBP, n (%)c 172 (7.9) 2,023 (7.7) 1,111 (7.4) 158 (6.6) <0.001
15 years Anthropometric characteristics     
n = 50,726  Height, cm 165.72 (0.4) 166.31 (0.2) 166.38 (0.2) 166.71 (0.2) 0.007
   BMI, kg/ m2 21.96 (0.1) 21.90 (0.0) 21.74 (0.0) 21.64 (0.0) <0.001
   Obesity, n (%)c 98 (9.2) 1,484 (8.6) 1,556 (7.4) 408 (6.6) 0.001
  Blood pressure      
   Systolic BP, mmHg 109.21 (0.5) 109.29 (0.2) 109.00 (0.2) 108.71 (0.3) 0.004
   Diastolic BP, mmHg 65.55 (0.3) 65.70 (0.1) 65.55 (0.1) 65.28 (0.2) 0.114
   HBP, n (%)c 109 (10.2) 1,591 (8.8) 1,842 (8.7) 515 (7.5) <0.001
  1. aCross-sectional data from the Korea School Health Examination Survey (2011–2015, 1761 schools)
  2. b P-value, using chi-squared test for n (%), ANOVA for mean (standard error of the mean, SEM)
  3. cUnweighted sample size and weighted percentage. In addition, sample sizes vary because of missing data