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Table 3 Characteristics of cognitive domains in participants

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

Cognitive domain Total number Mean SD Skew
Memory performance 3696 0.000 1.000 0.188
Attention/processing speed/executive function 3696 0.000 1.000 −0.624
Cognitive flexibility 3696 0.000 1.000 3.871
  1. Each cognitive domain is the mean of the composite scores
  2. Skew > 0, positive skewed distribution; skew < 0, negative skewed distribution