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Table 7 Distribution-based CID (SD multiples) and MCT lower limit (SEM) estimates for the 37-item FACT-Cog total score based on changes from post-intervention and six month follow-up

From: Important differences and meaningful changes for the Functional Assessment of Cancer Therapy-Cognitive Function (FACT-Cog)

FACT-Cog score (37 items)

SD

One-third SD

One-half SD

1 SEM, ρ = 0.74

1 SEM, ρ = 0.70

T1: Baseline

26.13

8.7

13.1

13.3

14.3

T2: Post-intervention

30.10

10.0

15.0

15.3

16.5

T3: Six-month follow-up

30.00

10.0

15.0

15.3

16.4

Mean

28.73

9.6

14.4

14.7

15.7

  1. Definitions: SD Standard deviation, SEM Standard error of measurement = σ√(1 − ρT-RT)