Table 2 Baseline characteristics of included vs excluded participants

From: Machine learning models for dementia risk prediction: evidence from the Sydney Memory and Ageing Study

Variable

Unit

Included in study

Not included in study

sig diff?

    
  

n

Mean

SD

n

Mean

SD

 

n

 

432

  

605

   

Age

years

432

76.61

4.20

605

79.56

4.85

p < 0.001

Depression

 

432

1.84

1.70

600

2.60

2.26

p < 0.001

Anxiety

 

418

1.08

1.82

589

1.15

1.91

 

Global cognition

z-score

430

-0.38

1.24

602

-0.98

1.41

p < 0.001

IL-8

pg/ml

419

19.65

14.63

497

20.50

12.24

 

IL-6

pg/ml

419

6.27

9.76

497

6.81

6.88

 

CRP

mg/L

431

2.73

5.35

502

3.29

5.53

 

HDL Cholesterol

mmol/L

430

1.44

0.41

501

1.44

0.46

 

LDL Cholesterol

mmol/L

428

2.84

0.87

500

2.76

0.88

 

Triglyceride

mmol/L

430

1.06

0.54

503

1.07

0.55

 

Creatinine Clearance

 

428

0.70

0.18

493

0.63

0.19

p < 0.001

Uric acid

mmol/L

326

0.30

0.09

396

0.31

0.10

 

Glucose

mmol/L

431

5.81

1.12

499

5.93

1.25

 

Waist-Hip Ratio

 

412

0.89

0.08

582

0.91

0.08

p < 0.001

Education

 

432

5.92

7.76

605

5.66

7.58

 

CVD Risk

 

418

16.72

3.64

580

17.73

3.37

p < 0.001

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