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Table 1 Sample characteristics of 11-year old participants in validation study

From: Validity of self-reported out-of-school physical activity among Finnish 11-year-old children

   N Missing values Median Lower quartile –
Upper quartile
Accelerometer MVPA1 (min/day)      
  MVPA1 126 29 43.00 34.32 – 56.25
Self-reported MVPA1 (min/day) in measuring time 1.      
  MVPA1 duration (min/day) 149 6 60.00 42.85 – 77.14
  MVPA1 frequency (0.5 – 7) 2 151 4 5 4 – 6
Self-reported MVPA1 (min/day) in measuring time 2.      
  MVPA1 duration (min/day) 153 2 60.00 42.86 – 77.14
  1st quartile (8.00 – 42.86 min/day) 44   34.29  
  2nd quartile (42.9 – 60.00 min/day) 47   51.43  
  3rd quartile(60.00 – 77.14 min/day) 30   68.57  
  4th quartile(77.15 – 86.00 min/day) 32   85.71  
  MVPA1 frequency (0.5 –7 ) 2 155 0 5 4 – 7
  1. 1 PA=Physical activity
  2. 2 Answer options from not at all to one to three times per week coded as 0.5, answer options from one time per week to seven times per week or more coded from 1 to 7.