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Table 1 Clinical characteristics of the studied adolescent subjects

From: Blood pressure to height ratios as simple, sensitive and specific diagnostic tools for adolescent (pre)hypertension in Nigeria

  Boys Girls p
Height (m)  
11 1.52 ± 0.07 1.48 ± 0.07 0.033
12 1.51 ± 0.09 1.51 ± 0.06 0.796
13 1.54 ± 0.07 1.54 ± 0.07 0.859
14 1.57 ± 0.08 1.56 ± 0.07 0.419
15 1.60 ± 0.07 1.58 ± 0.08 0.020
16 1.63 ± 0.07 1.58 ± 0.06 <0.001
17 1.65 ± 0.07 1.58 ± 0.08 <0.001
Total 1.59 ± 0.09 1.57 ± 0.08 <0.001
Weight (kg)  
11 42.9 ± 5.5 41.6 ± 7.3 0.541
12 42.8 ± 7.5 44.4 ± 8.3 0.374
13 45.7 ± 6.7 46.7 ± 7.5 0.430
14 47.4 ± 7.7 48.9 ± 6.2 0.128
15 52.1 ± 7.1 52.3 ± 7.4 0.852
16 55.4 ± 7.9 52.8 ± 7.1 0.006
17 58.2 ± 8.7 55.5 ± 6.7 0.014
Total 50.8 ± 9.1 50.7 ± 7.9 0.904
BMI (kg/m 2 )  
11 18.5 ± 2.1 18.9 ± 2.7 0.557
12 18.6 ± 2.3 19.5 ± 3.1 0.237
13 19.2 ± 2.4 19.6 ± 2.6 0.336
14 19.3 ± 2.5 20.2 ± 2.7 0.021
15 20.3 ± 2.4 21.0 ± 3.7 0.042
16 20.9 ± 3.0 21.0 ± 2.7 0.740
17 21.3 ± 3.0 22.3 ± 3.5 0.024
Total 20.0 ± 2.8 20.7 ± 3.2 0.001
SBP (mmHg)  
11 104 ± 11 101 ± 11 0.446
12 105 ± 13 101 ± 14 0.357
13 104 ± 12 105 ± 12 0.886
14 109 ± 15 107 ± 14 0.225
15 111 ± 13 111 ± 13 0.913
16 116 ± 16 114 ± 14 0.437
17 114 ± 18 113 ± 16 0.506
Total 110 ± 15 110 ± 14 0.434
DBP (mmHg)  
11 55 ± 11 58 ± 10 0.288
12 56 ± 12 58 ± 8 0.380
13 58 ± 8 58 ± 9 0.959
14 59 ± 10 59 ± 10 0.813
15 58 ± 11 62 ± 11 0.005
16 58 ± 11 63 ± 12 <0.001
17 58 ± 13 63 ± 12 0.008
Total 58 ± 11 61 ± 11 0.004
SBPHR (mmHg/cm)  
11 0.69 ± 0.07 0.69 ± 0.08 0.990
12 0.69 ± 0.08 0.67 ± 0.08 0.353
13 0.68 ± 0.07 0.68 ± 0.08 0.796
14 0.70 ± 0.09 0.69 ± 0.09 0.407
15 0.70 ± 0.09 0.71 ± 0.09 0.367
16 0.71 ± 0.08 0.72 ± 0.09 0.307
17 0.69 ± 0.10 0.71 ± 0.12 0.074
Total 0.69 ± 0.09 0.70 ± 0.09 0.166
DBPHR (mmHg/cm)  
11 0.36 0.08 0.39 0.07 0.101
12 0.37 0.07 0.38 0.05 0.348
13 0.37 0.05 0.37 0.06 0.942
14 0.38 0.06 0.38 0.07 0.618
15 0.36 0.07 0.39 0.07 0.001
16 0.35 0.07 0.40 0.08 <0.001
17 0.35 0.08 0.40 0.08 <0.001
Total 0.36 0.07 0.39 0.07 <0.001
  1. The numerical distribution of the subjects by age and sex is as follows: 11 years, 55 subjects (32 boys, 23 girls); 12 years, 65 subjects (36 boys, 29 girls); 13 years, 156 subjects (87 boys, 69 girls); 14 years, 215 subjects (108 boys, 107 girls); 15 years, 275 subjects (120 boys, 155 girls); 16 years, 233 subjects (109 boys, 124 girls); 17 years, 174 subjects (93 boys, 81 girls); Total, 1,173 subjects (585 boys, 588 girls).