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Table 2 Spearman correlation (rho) between questionnaire-assessed and accelerometer- assessed sedentary time, walking and MVPA according to adiposity group and sociodemographic characteristics

From: Using open source accelerometer analysis to assess physical activity and sedentary behaviour in overweight and obese adults

  

Sedentary

Walking

MVPA

  

rho

95% CI

rho

95% CI

rho

95% CI

All participants

 

0.49

0.45, 0.53

0.58

0.54, 061.

0.56

0.53, 0.58

Adiposity group

 BMI category

  Normal weight ≤ 24.9

n = 37

0.36

0.30, 0.43

0.46

0.40, 0.49

0.43

0.35, 0.49

  Overweight 25–29.9

n = 37

0.33

0.31, 0.36

0.33

0.29, 0.38

0.30

0.26, 0.35

  Obese ≥30

n = 43

0.24

0.20, 0.30

0.34

0.26, 0.42

0.28

0.22, 0.36

 BIA body fat %

  Average 14–20

n = 43

0.30

0.26, 0.34

0.31

0.27, 0.39

0.33

0.25, 0.39

  High 21–25

n = 33

0.28

0.24, 0.31

0.32

0.28, 0.37

0.21

0.17, 0.26

  Obese > 25

n = 41

0.22

0.18, 0.25

0.25

0.19, 0.32

0.14

0.08, 0.22

 Waist-to-hip ratio

  Normal < 0.90

n = 43

0.38

0.33, 0.40

0.58

0.42, 0.64

0.46

0.38, 0.52

  Overweight 0.90–0.99

n = 32

0.34

0.32, 0.37

0.48

0.44, 0.53

0.35

0.31, 0.40

  Obesity > 1.00

n = 42

0.23

0.18, 0.25

0.33

0.25, 0.41

0.24

0.18, 0.32

Sociodemographic Measures

 Smoking status

  Yes

n = 19

0.26

0.21, 0.29

0.30

0.24, 0.36

0.28

0.20, 0.34

  No

n = 98

0.31

0.29, 0.33

0.34

0.28, 0.39

0.26

0.22, 0.31

 Alcohol

  Less than once per week

n = 62

      

  1 or 2 times a week or less

n = 44

0.29

0.23, 0.32

0.31

0.27, 0.35

0.30

0.26, 0.36

  Several times a week or daily

n = 11

0.30

0.29, 0.33

0.32

0.29, 0.35

0.26

0.22, 0.31

  GCSE/O level

n = 43

N/A

 

N/A

 

N/A

 

  A level

n = 32

N/A

 

N/A

 

N/A

 

  University degree

n = 43

0.32

0.30, 0.34

0.31

0.27, 0.35

0.32

0.24, 0.38

  Postgraduate

n = 32

0.21

0.19, 0.24

0.36

0.33, 0.35

0.34

0.30, 0.39

  1. Abbreviations: CI, confidence interval