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Table 2 Composition of principal component analysis (PCA) factors

From: Multi-dimensional characterization of prediabetes in the Project Baseline Health Study

Factor 1

Sit/rise score (0.60), one-leg balance (0.53), 6-minute walk (0.44), body mass index (BMI) (-0.68), waist circumference (− 0.71)

Factor 2

Forced vital capacity (FVC) (0.81), diffusing capacity for carbon monoxide (DLCO) (0.79), forced expiratory volume (FEV1) (0.78), hand grip strength (0.75), hemoglobin (0.67), hematocrit (0.65), red blood cells (abs) (0.61), 6-min walk (0.59), sex (− 0.77)

Factor 3

Smoking (0.74), selection for high-risk lung cancer cohort (0.61), selection for high-risk cardiovascular disease (CVD) cohort (0.44), vitamin D (− 0.42)

Factor 4

Neutrophils (%) (0.96), neutrophil/lymphocyte ratio (0.87), neutrophils (absolute count) (0.68), lymphocytes (absolute count) (− 0.48), lymphocytes (%) (− 0.96)

Factor 5

Calcium (0.80), albumin (0.76), serum protein (0.68)

Factor 6

White blood cells (WBC) (0.88), lymphocytes (0.79), neutrophils (0.66), monocytes (0.45)

Factor 7

Average retinal nerve fiber layer (RNFL) thickness (0.95), specific RNFL thicknesses: inferior quadrant (0.86), superior quadrant (0.82), nasal quadrant (0.70), total macular volume (0.59)

Factor 8

Mean corpuscular hemoglobin (MCH) (0.97), mean corpuscular volume (MCV) (0.89), mean corpuscular hemoglobin concentration (MCHC) (0.62), red blood cells (RBC) (− 0.47)

Factor 9

HbA1c (0.84), diabetes (0.80), glucose (0.77), selection for high-risk CVD cohort (0.47)

Factor 10

Left ventricular ejection fraction (LVEF) (0.93), left ventricular inner dimension end systole (LVIDs) (− 0.53)

Factor 11

Urine creatinine (0.88), specific gravity (0.87), urine albumin (0.81), pH (− 0.49)

Factor 12

Total cholesterol (0.94), LDL cholesterol (0.89)

Factor 13

Ratio of FEV1 and FVC (0.66), oxygen saturation (0.41), chronic obstructive pulmonary disease (COPD) (− 0.59)

Factor 14

Sodium (0.83), chloride (0.79)

Factor 15

Coronary artery disease (CAD) (0.79), history of myocardial infarction (MI) (0.78), coronary artery calcium (0.62)

Factor 16

Eosinophils (%) (0.95), eosinophils (abs) (0.95)

Factor 17

Serum creatinine (0.81), chronic kidney disease (CKD) (0.57), estimated glomerular filtration rate (eGFR) (− 0.69)

Factor 18

Aspartate transaminase (AST) (0.92), alanine transaminase (ALT) (0.88)

Factor 19

General anxiety disorder-7 (GAD-7) (0.88), patient health questionnaire-9 (PHQ-9) (0.86)

Factor 20

Basophils (%) (0.86), basophils (abs) (0.86)

Factor 21

Center subfield thickness (eye imaging) (0.77), vitreoretinal interface abnormalities (0.67), total macular volume (0.45)

Factor 22

Reticulocytes (%) (0.93), reticulocytes (abs) (0.92)

Factor 23

Platelets (0.66), mean platelet volume (− 0.85)

Factor 24

Alcohol use identification test-C (AUDIT-C) score (0.51)

Factor 25

Left ventricular mass index (LVMI) (0.65), left ventricular inner dimension end diastole (LVIDd) (0.60), left ventricular inner dimension end systole (LVIDs) (0.48), pulse (− 0.53)

Factor 26

Left ventricular cardiac index (0.90), left ventricular cardiac output (0.83), pulse (0.40)

Factor 27

Monocytes (%) (0.82), monocytes (abs) (0.75)

Factor 28

Thyroid-stimulating hormone (TSH) (0.60)

Factor 29

Systolic blood pressure (0.85), diastolic blood pressure (0.84)

Factor 30

Potassium (0.73)

Factor 31

Atrial fibrillation (0.44), selection for high-risk breast/ovarian cancer cohort (− 0.53)

Factor 32

Heart failure (0.71), C-reactive protein (CRP) (0.49)

Factor 33

Stroke (0.75)

  1. All PCA factors with eigenvalue > 1 are shown, along with the component variables with absolute loadings > 0.4. Variables designated “(−)” are negatively loaded; all others are positively loaded. Factor loads for each variable presented in ( ). Abs: absolute count