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Table 1 Socio-demographic, biometric and biologic characteristics of the study population

From: Association of urinary sodium excretion with blood pressure and risk factors associated with hypertension among Cameroonian pygmies and bantus: a cross-sectional study

  Total N = 300 Bantus N = 150 Pygmies N = 150 p
Age, years 35 ± 12 33 ± 11 38 ± 12 0.0001
Male gender, % 55 57 52.6 0.4
Married status (%) 161 (53.7) 62 (41.3) 99 (66) < 0.0001
Literatea(%) 209 (69.7) 150 (100) 59 (39.3) < 0.0001
Tobacco (%) 10 (3.3) 8 (5.4) 10 (6.7) 0.9
Alcohol (%) 178 (59.3) 100 (66.7) 78 (52.0) 0.014
Height, m 1.63 ± 0.14 1.72 ± 0.12 1.54 ± 0.09 <  0.0001
Weight, kg 65.8 ± 16.8 77.2 ± 14.8 54.4 ± 9.2 <  0.0001
BMI, kg/m2 24.4 ± 4.8 26.0 ± 5.6 22.9 ± 3.1 <  0.0001
Overweight/obesity (%) 106 (35.3) 71 (47.3) 35 (23.3) <  0.0001
WC, cm 77 ± 11 78 ± 14 75 ± 5 0.002
AO (%) 14 (4.7) 13 (8.7) 1 (0.7) 0.003
SBP, mmHg 113 ± 16 119 ± 17 107 ± 12 <  0.0001
DBP, mmHg 74 ± 12 78 ± 13 71 ± 11 <  0.0001
MBP, mmHg 87 ± 12 92 ± 12 83 ± 10 <  0.0001
PP, mmHg 39 ± 13 41 ± 14 36 ± 11 0.002
Hypertension (%) 47 (15) 42 (28) 5 (3.3) <  0.0001
Na+, mmol/L 84.2 ± 61.4 121.5 ± 61.0 46.9 ± 32.4 <  0.0001
K+, mmol/L 70.8 ± 45.2 73.5 ± 44.7 68.2 ± 45.8 0.3
Na+/K+ ratio 2.0 ± 2.6 2.6 ± 3.1 1.3 ± 1.9 <  0.0001
  1. aattempt at least a first year of school education, BMI Body mass index, WC Waist circumference, AO Abdominal obesity, SBP Systolic blood pressure, DBP Diastolic blood pressure, MBP Mean blood pressure, PP Pulse pressure, Quantitative data are presented as mean ± SD and qualitative data are presented as count (percentage)