Number and proportion of cases and controls who had each feature
| Feature | No. of cases with feature (%) (N=46 713) | No. of controls with feature (%) (N=46 713) |
| Codes | ||
| Cognitive decline codes | 3276 (7.01) | 240 (0.51) |
| Cognitive screening test | 888 (1.90) | 124 (0.27) |
| Dementia annual review | 17 372 (37.19) | 151 (0.32) |
| Memory loss codes | 21 282 (45.56) | 1387 (2.97) |
| MMSE test | 9574 (20.32) | 600 (1.28) |
| Referral to memory assessment service | 3464 (7.42) | 117 (0.25) |
| Referral to old-age psychiatrist, neurologist or geriatrician | 12 683 (27.15) | 2227 (4.77) |
| Alzheimer’s medication prescription | 10 044 (21.50) | 203 (0.43) |
| Keywords | ||
| Memory | 27 025 (57.85) | 3815 (8.17) |
| Cognition | 8873 (18.99) | 2178 (4.66) |
| Forgetful | 14 272 (30.55) | 3397 (7.27) |
| MMSE or screening test | 11 969 (25.62) | 2189 (4.69) |
| Confused | 20 530 (43.95) | 5334 (11.42) |
| Dementia | 23 935 (51.24) | 2848 (6.10) |
| Behaviour change/problems | 5388 (11.53) | 2132 (4.56) |
| Family concerned | 37 779 (80.87) | 23 718 (50.77) |
| Third party consultation | 706 (1.51) | 1854 (3.97) |
MMSE, Mini-Mental State Examination.