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Table 1 Descriptive statistics of the 22 biomarkers investigated in the study

From: Predicting mortality with biomarkers: a population-based prospective cohort study for elderly Costa Ricans

     Proportion  
Biomarker Units Mean SD ≤1SD < mean ≥ 1SD N
Metabolic hormones        
 Glycosylated hemoglobin (HbA1c) percent 5.76 1.13 0.01 0.69 0.09 2704
 Fasting glucose mg/dl 110.64 45.39 0.01 0.70 0.09 2748
CV biomarkers        
 Diastolic blood pressure mmHg 83.66 12.10 0.15 0.52 0.15 2883
 Systolic blood pressure mmHg 144.00 23.18 0.14 0.55 0.15 2883
Metabolic – lipids        
 Triglycerides mg/dl 162.84 85.27 0.10 0.62 0.13 2739
 Total cholesterol mg/dl 215.54 49.42 0.14 0.54 0.15 2746
 HDL cholesterol mg/dl 44.24 13.12 0.14 0.56 0.14 2743
 Total/HDL cholesterol ratio ratio 5.18 1.60 0.15 0.53 0.14 2743
 LDL cholesterol mg/dl 138.48 40.73 0.15 0.54 0.15 2581
Stress hormones        
 Urinary cortisol μg/g 26.22 24.99 0.00 0.66 0.09 2249
 DHEAS μg/dl 54.06 41.72 0.10 0.62 0.15 2706
 Epinephrine μg/g 7.41 10.95 0.00 0.69 0.07 1581
 Norepinephrine μg/g 37.63 32.21 0.01 0.65 0.09 1631
Inflammation, immune system        
 CRP mg/l 5.61 6.69 0.00 0.73 0.08 2677
Organ-specific functional reserve        
 Creatinine clearance mg/min 74.74 30.16 0.14 0.54 0.14 2401
 Handgrip strength kg 26.89 9.08 0.15 0.54 0.18 2595
 Distance in 10 seconds meters 5.51 2.52 0.13 0.46 0.12 2794
 Pulmonary peak flow l/min 304.66 118.65 0.15 0.57 0.17 2635
Nutrition, body size        
 Knee height cm 49.41 3.35 0.15 0.52 0.16 2788
 Waist circumference cm 93.88 12.37 0.15 0.51 0.14 2699
 BMI kg/m2 26.87 5.25 0.12 0.50 0.12 2789
 Waist/hip ratio ratio 0.948 0.077 0.14 0.49 0.13 2626
  1. The following outlier observations were dropped: triglycerides: 6 observations >700 mg/dl; LDL-C: 4 obs. >300 mg/dl; cortisol: 7 obs. >400 μg/g; DHEAS: 4 obs. >300 μg/g; epinephrine: 2 obs. >150 μg/g; norepinephrine: 2 obs. >600 μg/g; CRP: 4 obs. >80 mg/l; creatinine: 3 obs. >250 mg/min; and waist circumference: 5 obs < 55 cm.
  2. Statistics computed using sampling weights.