Table 4.
Descriptive statistics presenting weighted means and standard deviation of the cognitive tests included in the ELSA-HCAP respondent interview
| Overall sample |
Men |
Women |
|||||
|---|---|---|---|---|---|---|---|
| Cognitive test | n | Mean (SD) | n | Mean (SD) | n | Mean (SD) | P-value |
| MMSE | 1273 | 26.8 (3.3) | 573 | 27.2 (3.0) | 700 | 26.5 (3.5) | ≤0.001 |
| HRS-TICS | 1271 | 2.8 (0.5) | 572 | 2.8 (0.5) | 699 | 2.7 (0.6) | 0.10 |
| CERAD immediate | 1263 | 18.4 (5.1) | 569 | 17.7 (4.9) | 694 | 18.9 (5.2) | ≤0.001 |
| CERAD delayed | 1264 | 5.5 (2.6) | 568 | 5.2 (2.4) | 696 | 5.8 (2.6) | ≤0.001 |
| CERAD recognition | 1261 | 18.6 (2.5) | 567 | 18.6 (2.2) | 694 | 18.5 (2.7) | 0.57 |
| Retrieval fluency | 1270 | 19.2 (8.5) | 572 | 20.2 (8.8) | 698 | 18.3 (8.2) | ≤0.001 |
| Letter cancellation | 1186 | 269.1 (84.5) | 542 | 258.6 (76.3) | 644 | 278.3 (85.5) | ≤0.001 |
| Backwards counting | 1253 | 31.5(10.9) | 563 | 33.2(10.8) | 690 | 30.1(10.9) | ≤0.001 |
| CSID | 1271 | 4.0 (0.3) | 572 | 4.0 (0.2) | 699 | 3.9 (0.3) | 0.01 |
| EBMT story | |||||||
| immediate | 1264 | 4.1 (1.5) | 568 | 4.1 (1.5) | 696 | 4.2 (1.5) | 0.43 |
| delayed | 1217 | 2.9 (1.9) | 546 | 2.8 (1.9) | 671 | 2.9 (1.9) | 0.22 |
| Wechsler story | |||||||
| immediate | 1254 | 9.3 (4.7) | 565 | 9.2 (4.5) | 689 | 9.4 (4.8) | 0.28 |
| delayed | 1210 | 7.2 (4.7) | 544 | 7.0 (4.6) | 666 | 7.4 (4.8) | 0.17 |
| recognition | 1222 | 11.3 (2.8) | 549 | 11.4 (2.7) | 673 | 11.3 (2.9) | 0.57 |
| CERAD Praxis | |||||||
| drawing | 1250 | 9.5 (1.8) | 564 | 9.9 (1.6) | 686 | 9.2 (1.9) | ≤0.001 |
| delayed recall | 1161 | 7.8 (2.8) | 531 | 8.3 (2.7) | 630 | 7.3 (2.8) | ≤0.001 |
| Symbol digit | 1196 | 33.8 (12.6) | 546 | 33.7 (11.9) | 650 | 33.9 (13.1) | 0.64 |
| Number series | 1153 | 530.4 (31.4) | 528 | 536.3 (29.9) | 625 | 525.3 (31.7) | ≤0.001 |
| Ravens | 1258 | 13.6 (3.5) | 567 | 14.1 (3.2) | 691 | 13.2 (3.7) | ≤0.001 |
| Trail making A | 1209 | 55.0 (34.9) | 548 | 53.9 (35.8) | 661 | 55.9 (34.1) | 0.33 |
| Trail making B | 1038 | 116.1 (57.5) | 487 | 115.1 (54.1) | 551 | 116.9 (60.5) | 0.65 |
ELSA-HCAP: English Longitudinal Study of Ageing-Harmonised Cognitive Assessment Protocol. MMSE, Mini-Mental Status Examination; HRS-TICS, Health Retirement Study-Telephone Interview for Cognitive Status; CERAD, Consortium to Establish a Registry for Alzheimer’s Disease; CSI-D, Community Screening Instrument for Dementia; EBMT, East Boston Memory Test.