Table 1.

Population characteristicsa

Newly Diagnosed HypertensionP Value
No(n = 4222)Yes(n = 413)
Age (yr)44.5 (10.4)52.0 (10.6)<0.001
Male (n [%])1921 (45.5)194 (47.0)0.566
White (n [%])4008 (95.5)401 (97.3)0.319
BMI (kg/m2)24.9 (3.6)27.1 (4.3)<0.001
Alcohol >3 units/d (n [%])171 (4.1)28 (6.8)0.010
Smoking (n [%])1670 (39.7)152 (36.9)0.271
Systolic BP (mmHg)118 (11)130 (8)<0.001
Diastolic BP (mmHg)69 (7)76 (7)<0.001
Cholesterol (mmol/L)5.5 (1.1)5.8 (1.1)<0.001
Triglycerides (mmol/L)1.0 (0.8 to 1.4)1.3 (0.9 to 1.8)<0.001
Fasting glucose (mmol/L)4.6 (0.8)4.9 (0.9)<0.001
Fasting insulin (mU/L)7.0 (5.1 to 10.0)8.7 (5.9 to 12.8)<0.001
Serum creatinine (μmol/L)82 (12)83 (15)0.064
GFR (ml/min per 1.73 m2)83 (13)80 (14)<0.001
C-reactive protein (mg/L)0.9 (0.4 to 2.3)1.5 (0.6 to 3.4)<0.001
Left ventricular hypertrophy (n [%])132 (3.1)17 (4.2)0.271
Urinary sodium excretion (mmol/24 h)141 (49)139 (51)0.371
UAE (mg/24 h)7.9 (5.8 to 12.1)9.5 (6.5 to 16.4)<0.001
  • a Values are given as mean (SD) or median (interquartile range) in case of skewed data distribution. Statistical analyses were performed with t test, Mann-Whitney test in case of skewed distribution, or χ2 test in case of categorical variable. UAE, urinary albumin excretion.