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Table 1 Detail descriptions of the predictor variables used in final health space models. KNHANES data was used to construct health spaces and Ewha-Boramae data and KARE data were used for external validation of health spaces

From: Statistical modeling of health space based on metabolic stress and oxidative stress scores

Data
(sample size)
Model Development External Validation
KNHANES
(n = 32,140)
Ewha-Boramae
(n = 862)
KARE
(n = 3,199)
Age (year) 47.95 (\(\pm 15.57\)) 47.72 (\(\pm 11.23\)) 51.01 (\(\pm 8.77\))
Sex
 Male 15,469 (48.13%) 554 (64.26%) 1,782 (55.70%)
 Female 16,671 (51.87%) 308 (35.74%) 1,417 (44.29%)
Smoking
 Non-smokers/Past smokers 24,567 (76.44%) 690 (80.05%) 2,222 (69.46%)
 Current smokers 7,573 (23.56%) 172 (19.95%) 977 (30.54%)
WBC (× 103 μL) 6.19 (\(\pm 1.72\)) 5.87 (\(\pm 1.60\)) 6.63 (\(\pm 1.79\))
GPT (μkat/L) 0.36 (\(\pm 0.31\)) 0.49 (\(\pm 0.44\)) 0.47 (\(\pm 0.53\))
BMI (kg/m2) 23.68 (\(\pm 3.37\)) 24.13 (\(\pm 3.29\)) 24.54 (\(\pm 3.08\))
TG (mmol/L) 1.54 (\(\pm 1.30\)) 1.35 (\(\pm 0.78\)) 1.87 (\(\pm 1.18\))
HDLC (mmol/L) 1.28 (\(\pm 0.31\)) 1.36 (\(\pm 0.33\)) 1.14 (\(\pm 0.25\))
Glucose (mmol/L) 5.47 (\(\pm 1.29\)) 5.30 (\(\pm 1.03\)) 4.89 (\(\pm 1.26\))
  1. Continuous variables were expressed as the mean \(\pm\) standard deviation, categorical variables were expressed as frequency (percentage)