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Table 2 Mixed model output for the latent general cognitive factor from the one class model (n = 2854)

From: Social activity, cognitive decline and dementia risk: a 20-year prospective cohort study

   Beta SE P
Intercept (I)   0   
Linear slope (t)   −0.47 0.46 0.30
Quadratic slope (t2)   −2.45 1.56 0.12
Female I 0.04 0.19 0.83
  t 0.05 0.25 0.85
  t2 −0.42 0.81 0.60
Medium education I 1.07 0.13 <0.001
  t 0.41 0.15 0.01
  t2 −1.58 0.53 0.003
High education I 2.03 0.19 <0.001
  t 0.23 0.21 0.26
  t2 −0.75 0.71 0.29
Medium social engagement I 0.57 0.30 0.06
  t −0.13 0.48 0.79
  t2 0.11 1.66 0.95
High social engagement I 0.70 0.29 0.02
  t −0.07 0.45 0.87
  t2 −0.17 1.52 0.91
Large network size I 0.11 0.12 0.37
  t 0.05 0.21 0.80
  t2 −0.38 0.71 0.59
Network satisfaction I −0.05 0.17 0.77
  t 0.03 0.23 0.90
  t2 −0.44 0.77 0.57
Feel well understood I −0.15 0.09 0.09
  t 0.14 0.06 0.03
  t2 0.00 0.06 0.94
  1. The latent general cognitive ability is centered to 0 at time 0 in the reference category (intercept = 0 not estimated) and standardized to the between-subject variability at intercept
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