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Table 4 Overview of the criterion validity results in adolescents, adults and older adults

From: Reliability and validity of three questionnaires measuring context-specific sedentary behaviour and associated correlates in adolescents, adults and older adults

   

Spearman’s rho (95 % CI)

p-value

Bland-Altman procedure

 

Self-reported total sedentary time

ActivPAL-derived sedentary time

  

Regression equation: D = b0 + (b1 * A)

Standard deviation of the residuals

D at A (95 % LOA)

Adolescents

   Weekday

971.85 (287.65)

618.11 (65.13)

0.42 (0.19; 0.61)

0.001

/

/

/

   Weekend day

810.73 (351.56)

567.98 (96.02)

0.02 (−0.23; 0.27)

0.861

/

/

/

   Average day

925.82 (289.36)

603.79 (56.34)

0.29 (0.04; 0.50)

0.023

/

/

/

Adults

   Weekday

648.18 (270.12)

479.18 (156.26)

0.52 (0.22; 0.73)

0.002

/

/

/

   Weekend day

512.27 (238.02)

447.76 (99.07)

0.06 (−0.29; 0.40)

0.743

/

/

/

   Average day

609.35 (242.73)

470.20 (125.46)

0.49 (0.18; 0.71)

0.004

/

/

/

Older adults

   Weekday

515.45 (176.26)

477.67 (111.33)

0.50 (0.19; 0.72)

0.003

−262.14 + (0.60 × A)

139.48

35.80 (−535.51; 11.24)

   Weekend day

506.36 (160.32)

551.76 (115.60)

0.38 (0.04; 0.64)

0.030

−288.83 + (0.46 × A)

147.17

−45.46 (−577.29; −0.37)

   Average day

512.86 (162.08)

498.84 (102.47)

0.48 (0.16; 0.71)

0.005

−287.19 + (0.60 × A)

126.01

16.32 (−534.18; −40.21)

  1. Total sedentary times are expressed as minutes/day [mean (standard deviation)]
  2. D difference between self-reported total sedentary time and activPAL-derived sedentary time, A average of self-reported total sedentary time and ActivPAL-derived sedentary time, b 0 intercept, b 1  slope, LOA limits of agreement (D ± 1.96 × standard deviation of the residuals), CI confidence interval. / for some variables, Kolmogorov-Smirnov Test was significant, so that Bland-Altman procedures could not be performed