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Table 1 Comparisons between mean daily activity monitor data from the Actigraph and Actical, expressed as raw and log-transformed data (n = 56, total of 600 observation days).

From: Comparison of two different physical activity monitors

 

Actigraph counts·min-1·day-1 mean (SD)

Actical counts·min-1·day-1 mean (SD)

CV %

R

Raw

216.2 (106.2)

188.0 (101.1)*

15.5

0.90**

Log-transformed

5.26 (0.48)

5.11 (0.51)*

3.1

0.90**

  1. *statistically significant, t-test (P < 0.0001)
  2. **statistically significant, correlation (P < 0.0001)
  3. Raw = raw activity monitor data.
  4. Log-transformed = activity monitor data after log-transformation, log (counts·min-1·day-1).
  5. CV = coefficient of variation of the difference between Actigraph and Actical.
  6. R = Pearson Product Moment Correlation Coefficient.