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Table 4 Bland–Altman analysis evaluating agreement between brain age predictions from five algorithms (brainageR, DeepBrainNet, XGBoost, ENIGMA, pyment) for no motion versus low motion scans, and no motion versus high motion scans

From: Examining the reliability of brain age algorithms under varying degrees of participant motion

Raw brain age bland altman analyses

Algorithms

 

No versus low motion scans

No versus high motion scans

brainageR

Bias

− 3.682

− 5.410

 

LoA

− 14.182–1.142

− 24.254–1.418

 

% within MAD

48.55%

34.06%

DeepBrainNet

Bias

− 0.721

− 0.816

 

LoA

− 6.9002–4.7241

− 6.4133–7.7052

 

% within MAD

84.780%

77.540%

XGBoost

Bias

− 1.370

− 3.577

 

LoA

− 12.389–5.976

− 17.542–7.398

 

% within MAD

65.220%

44.930%

ENIGMA

Bias

− 0.689

− 1.553

 

LoA

− 10.453–10.932

− 17.317–12.256

 

% within MAD

64.490%

52.170%

pyment

Bias

0.805

0.631

 

LoA

− 2.3343–6.9135

− 5.8886–7.7195

 

% within MAD

87.680%

85.510%

  1. Results include the mean bias, 95% limits of agreement (LoA), and percentage of points within the margins of agreement (% within MAD)