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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: Alzheimer Dis Assoc Disord. 2017 Jan-Mar;31(1):19–26. doi: 10.1097/WAD.0000000000000150

Table 2.

Effect sizes for ADAS-Cog versions at 12 and 24 months with and without amyloid imaging enrichment

ES 95% CI Δμ σ n ES 95% CI Δμ σ n

Month 12 Month 24

No SUVR enrichment

ADAS-Cog11 0.69 0.59–0.80 4.4 6.4 258 1.04 0.92–1.19 9.4 9 162
ADAS-Cog12 0.73 0.62–0.84 4.7 6.5 249 1.13 1.00–1.29 9.5 8.4 150
ADAS-Cog13 0.74 0.63–0.85 5.1 6.9 249 1.14 1.01–1.30 10.3 9.1 148

SUVR ≥ 1.1

ADAS-Cog11 0.78 0.59–1.01 4.8 6.1 91 1 0.67–1.57 8.4 8.4 24
ADAS-Cog12 0.79 0.59–1.03 5.1 6.4 89 1.02 0.73–1.54 8.9 8.7 26
ADAS-Cog13 0.84 0.64–1.09 5.7 6.7 89 1.07 0.78–1.56 10.1 9.5 24

SUVR ≥ 1.3

ADAS-Cog11 0.8 0.59–1.05 4.9 6.2 76 1.17 0.80–1.87 9.7 8.3 20
ADAS-Cog12 0.83 0.62–1.09 5.2 6.3 74 1.15 0.82–1.75 10.1 8.8 22
ADAS-Cog13 0.88 0.65–1.16 5.9 6.7 74 1.2 0.87–1.83 11.5 9.6 20

SUVR ≥ 1.4

ADAS-Cog11 0.77 0.55–1.06 5 6.4 58 1.2 0.73–2.18 11 9.2 15
ADAS-Cog12 0.88 0.66–1.16 5.5 6.3 56 1.22 0.78–2.12 11.8 9.7 16
ADAS-Cog13 0.96 0.74–1.26 6.3 6.6 56 1.21 0.80–2.03 12.9 10.7 15

Caption: ADAS-Cog = Alzheimer's Disease Assessment Scale-Cognitive Subscale, ES = effect size, CI = confidence interval, Δμ = mean change in ADAS-Cog, σ = standard deviation, n=sample size, SUVR = standardized uptake value ratio.