Table 2.
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Four Latent Class Model of Cognitive Performance at Age 65 (Wisconsin Longitudinal Study, 2004, N = 3,713)

Latent class
Assigned labelOverall low Overall highHigh fluency High episodic memory
Latent class prevalences.22.29.23.26
Item-response probabilities
 Letter fluency
  Lowest 25%.39.03.02.31
  25%–50%.41.12.14.37
  50%–75%.17.27.30.29
  Highest 25%.03.58.54.03
 Category fluency
  Lowest 25%.52.07.09.29
  25%–50%.24.12.15.27
  50%–75%.20.29.37.33
  Highest 25%.04.51.38.12
 Immediate recall
  Lowest 25%.55.00.19.00
  25%–50%.34.03.37.14
  50%–75%.11.18.32.30
  Highest 25%.00.79.12.57
 Delayed recall
  Lowest 25%.59.00.32.06
  25%–50%.27.03.34.10
  50%–75%.15.14.33.22
  Highest 25%.00.83.01.61
Latent class
Assigned labelOverall low Overall highHigh fluency High episodic memory
Latent class prevalences.22.29.23.26
Item-response probabilities
 Letter fluency
  Lowest 25%.39.03.02.31
  25%–50%.41.12.14.37
  50%–75%.17.27.30.29
  Highest 25%.03.58.54.03
 Category fluency
  Lowest 25%.52.07.09.29
  25%–50%.24.12.15.27
  50%–75%.20.29.37.33
  Highest 25%.04.51.38.12
 Immediate recall
  Lowest 25%.55.00.19.00
  25%–50%.34.03.37.14
  50%–75%.11.18.32.30
  Highest 25%.00.79.12.57
 Delayed recall
  Lowest 25%.59.00.32.06
  25%–50%.27.03.34.10
  50%–75%.15.14.33.22
  Highest 25%.00.83.01.61
Table 2.
Open in new tab

Four Latent Class Model of Cognitive Performance at Age 65 (Wisconsin Longitudinal Study, 2004, N = 3,713)

Latent class
Assigned labelOverall low Overall highHigh fluency High episodic memory
Latent class prevalences.22.29.23.26
Item-response probabilities
 Letter fluency
  Lowest 25%.39.03.02.31
  25%–50%.41.12.14.37
  50%–75%.17.27.30.29
  Highest 25%.03.58.54.03
 Category fluency
  Lowest 25%.52.07.09.29
  25%–50%.24.12.15.27
  50%–75%.20.29.37.33
  Highest 25%.04.51.38.12
 Immediate recall
  Lowest 25%.55.00.19.00
  25%–50%.34.03.37.14
  50%–75%.11.18.32.30
  Highest 25%.00.79.12.57
 Delayed recall
  Lowest 25%.59.00.32.06
  25%–50%.27.03.34.10
  50%–75%.15.14.33.22
  Highest 25%.00.83.01.61
Latent class
Assigned labelOverall low Overall highHigh fluency High episodic memory
Latent class prevalences.22.29.23.26
Item-response probabilities
 Letter fluency
  Lowest 25%.39.03.02.31
  25%–50%.41.12.14.37
  50%–75%.17.27.30.29
  Highest 25%.03.58.54.03
 Category fluency
  Lowest 25%.52.07.09.29
  25%–50%.24.12.15.27
  50%–75%.20.29.37.33
  Highest 25%.04.51.38.12
 Immediate recall
  Lowest 25%.55.00.19.00
  25%–50%.34.03.37.14
  50%–75%.11.18.32.30
  Highest 25%.00.79.12.57
 Delayed recall
  Lowest 25%.59.00.32.06
  25%–50%.27.03.34.10
  50%–75%.15.14.33.22
  Highest 25%.00.83.01.61
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