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Table 2 Correlation between PA characteristics

From: Patterns and correlates of physical activity in adult Norwegians: a forecasted evolution up to 2025 based on machine learning approach

  Male Female
Frequency Duration Frequency Duration
< 25 Duration 0.22 0.28
Intensity 0.27 0.37 0.23 0.34
25–44 Duration 0.15 0.15
Intensity 0.24 0.30 0.18 0.32
45–64 Duration 0.12 0.13  
Intensity 0.22 0.30 0.12 0.29
> 65 Duration 0.14 0.16
Intensity 0.17 0.32 0.11 0.32
  1. Spearman’s rank correlation coefficient from 1999 to 2013 based on the original 6- or 8-point component scales between the independent features (Frequency, Duration and Intensity) in both male and females and in the four age groups (i.e., < 25, 25–44, 45–64, > 64 years old)