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Table 2 Principal components analysis for the cognitive subtests

From: Patterns of cognitive function in middle-aged and elderly Chinese adults—findings from the EMCOA study

Cognitive subtest

Components

Verbal memory

Attention/processing speed/executive function

Cognitive flexibility

AVLT-IR

0.859348

0.1786355

−0.02420138

AVLT-SR

0.925347

0.1656561

0.013152043

AVLT-LR

0.919844

0.1586545

0.007458428

SDMT

0.268641

0.6900593

0.107590145

DSF

0.056095

0.5391598

−0.48831854

DSB

0.256134

0.5315925

−0.36294081

TMT-A

0.09689

0.7970535

0.091785669

TMT-B

0.110346

0.7881209

0.142030366

LMT-IR

0.427479

0.5010345

−0.13808383

SCWT-IT

0.042578

0.2260081

0.759748898

  1. Bold entries indicate measures with high loadings on each factor
  2. AVLT-IR Auditory Verbal Learning Test—immediate recall, AVLT-LR Auditory Verbal Learning Test—long recall, AVLT-SR Auditory Verbal Learning Test—short recall, DSB digit span backwards, DSF digit span forwards, SCWT-IT Stroop Color-Word Test Interference Trial, SDMT Symbol Digit Modalities Test, TMT Trail Making Test, LMT-IR Logical Memory Test—immediate recall