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Table 4 Associations between daily physical activity and self-rated cognition analyzed by multilevel modelling (n = 2021)

From: Physical activity and cognitive function: moment-to-moment and day-to-day associations

 

Memory

Thinking

Sharpness of mind

Model 1: Max counts

Model 2: Active time

Model 1: Max counts

Model 2: Active time

Model 1: Max counts

Model 2: Active time

B

SE

p

B

SE

p

B

SE

p

B

SE

p

B

SE

p

B

SE

p

Fixed effects

                  

Intercept

66.03

1.55

<.001

71.84

3.13

<.001

65.08

1.56

<.001

66.56

3.15

<.001

64.61

1.57

<.001

68.38

3.21

<.001

Day

.53

.14

<.001

.56

.16

<.001

.85

.14

<.001

.88

.16

<.001

.71

.14

<.001

.70

.16

<.001

Weekend

2.27

.67

.001

2.25

.68

.001

1.37

.67

.040

1.42

.69

.038

1.77

.68

.010

1.70

.70

.016

Agea

.16

.13

.228

.16

.13

.217

.11

.13

.405

.11

.13

.402

.15

.13

.249

.16

.13

.241

Educationa

.11

.29

.700

.11

.29

.706

.13

.29

.646

.13

.29

.649

.22

.29

.446

.22

.29

.448

Sex

3.86

1.92

.046

3.84

1.92

.047

4.68

1.94

.016

4.68

1.94

.017

5.27

1.94

.007

5.26

1.94

.007

Race/ethnicity

4.83

2.19

.028

4.76

2.19

.030

3.18

2.21

.151

3.17

2.21

.153

4.56

2.22

.041

4.52

2.21

.042

Physical activityb

.01

.08

.889

.01

.00

.007

−.03

.08

.663

.00

.00

.810

−.05

.08

.502

.01

.00

.088

Wear time

   

.00

.00

.050

   

.00

.00

.593

   

.00

.00

.231

Variance components

Est.

SE

Wald Z*

Est.

SE

Wald Z*

Est.

SE

Wald Z*

Est.

SE

Wald Z*

Est.

SE

Wald Z*

Est.

SE

Wald Z*

Residual

162.47

5.56

29.22

161.92

5.54

29.23

163.29

5.59

29.22

163.39

5.59

29.23

171.50

5.87

29.22

171.40

5.86

29.23

Random intercept

232.98

21.33

1.92

232.60

21.29

1.93

237.68

21.73

1.94

237.46

21.71

1.94

237.18

21.79

1.89

236.68

21.74

1.89

  1. a Grand-mean centered, bPerson-mean centered day-level variable. *All Wald Z -tests p < 0.001. Reference categories female (sex), weekday (weekend), white (race/ethnicity)