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Table 2 Characteristics of patients and controls

From: Association of NOS3 gene polymorphisms with essential hypertension in Sudanese patients: a case control study

  Patients Controls P value
Mean age ± SD 52.7 ± 7.6 42.1 ± 7.7 < .001
Number of males (percentage) 50 (31.8%) 69 (81.2%) < .001
Mean systolic BP (mm Hg) 139.8 ± 19.2 120.2 ± 10.3 < .001
Mean diastolic BP (mm Hg) 84.6 ± 11.6 77.8 ± 8.5 < .001
BMI 29.9 ± 6.3 26.5 ± 4.5 0.004
Smoking 6 (3.8%) 23 (30.7%) < .001
Diabetes 44 (28%)
Stroke 4 (2.5%)
MI 6 (3.8%)
Renal failure 4 (2.5%)
Hypercholesterolemia 22 (14%)
  1. P values were derived from the χ2 test for categorical variables (gender) and student’s t test for continuous variables (age, BMI, and systolic and diastolic blood pressure)