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Table 2 Intra-class coefficients (ICC), mean values across 2 administrations, and Bland-Altman analyses assessing the reliability of three MARCA variables.

From: The Multimedia activity recall for children and adolescents (MARCA): development and evaluation

Variable

ICC

Mean

Bias

SEM

Upper LoA

Lower LoA

PAL

0.93

2.02

+0.001

0.11

+0.30

-0.30

MVPA min

0.94

196.2

-1.1

18.9

+51.2

-53.4

locomotion min

0.88

193.1

+6.9

26.1

+79.2

-65.4

  1. Note: n = 32; ICC = intra-class coefficient; SEM = standard error of measurement (SD/√2); LoA = limit of agreement; PAL = physical activity level (a weighted mean MET.d-1 score); MVPA = minutes spent in moderate to vigorous physical activity; locomotion = minutes spent in locomotion.