Table 3

Relative weighting of each feature in the three classifiers

Coded data onlyCodes and keywords
Logistic regressionRandom forestNaive BayesLogistic regressionRandom forestNaïve Bayes
Alzheimer’s medication0.7270.3540.9120.6760.3390.912
Cognitive decline0.3780.0660.8880.2600.0610.880
Cognitive screening test0.0250.0060.9970.0760.0100.997
Dementia annual review10.8450.9570.9170.8880.957
Memory loss codes0.62210.5930.4560.9640.593
MMSE0.3440.1870.7290.1990.1570.729
Referral to memory assessment0.3120.04910.1430.0331
Referral to psychiatrist, neurologist or geriatrician0.3450.2920.5090.2480.2100.509
Keyword dementia0.4940.9750.473
Keyword memory0.25110.422
Keyword confusion0.2380.4440.363
Keyword behaviour0.0370.0910.520
Keyword cognition0.0310.0780.515
Keyword family0.1580.0790.113
Keyword MMSE0.0190.1190.515
Keyword forget0.0510.0870.439
Keyword third party consultation10.2000.544
  • MMSE, Mini-Mental State Examination.