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Table 1 Age-adjusted clinical characteristics of the study population

From: Salt intake and mental distress among rural community-dwelling Japanese men

Parameters Estimated daily salt intake tertiles P for trend
T1 (low) T2 T3 (high)
No. at risk 338 338 338  
Age, year 65.6 ± 10.2 65.4 ± 10.1 64.3 ± 10.0  
Body mass index, kg/m2 23.0 23.4 24.1 <0.001
Systolic blood pressure, mmHg 132 136 137 <0.001
Diastolic blood pressure, mmHg 79 82 82 0.003
Antihypertensive medication use, % 40.2 38.7 36.8 0.640
Thyroid disease, % 1.5 1.2 0.9 0.813
Current drinker, % 75.4 77.5 85.3 0.002
Current smoker, % 26.4 18.5 18.4 0.012
Serum aspartate transaminase (AST), IU/L 26 25 25 0.226
Serum triglycerides, mg/dl 115 125 129 0.141
Serum HDL-cholesterol, mg/dl 56 54 56 0.184
HbA1C, % 5.7 5.6 5.7 0.363
Antidiabetic medication use, % 9.1 6.5 10.5 0.164
Glomerular filtration rate (GFR), mL/min/1.73 m2 68.1 69.7 74.1 <0.001
Kessler 6 score 1.6 1.3 1.2 0.151
  1. Ages are given as mean ± standard deviation