Table 2.
Impact of different baseline selection criteria on cohort numbers, demographics, case mix and rates of pre- and post-event dementia for hospitalised patients only.
| Hospitalised, all | No comorbidity | No premorbid dependency | Age<=80 | Non-dysphasic | |
|---|---|---|---|---|---|
| Number in study | 502 | 313 | 330 | 259 | 437 |
| Mean age/sd | 77.2/11.3 | 76.3/11.8 | 75.0/11.7 | 69.0/9.7 | 77.1/11.6 |
| Male sex | 243(48) | 167(53) | 175(53) | 154(59) | 218(50) |
| Education (<12 yrs) | 244(49) | 143(46) | 183(55) | 134(52) | 203(46) |
| TIA | 60(12) | 37(12) | 44(13) | 32(12) | 60(14) |
| Ischaemic stroke | 390(78) | 227(73) | 259(78) | 194(75) | 330(76) |
| PICH | 52(10) | 49(16) | 27(8) | 33(13) | 47(11) |
| Minor stroke | 160(32) | 94(30) | 114(35) | 92(36) | 153(35) |
| Major stroke | 282(56) | 182(58) | 172(52) | 135(52) | 224(51) |
| Rankin≥3 † | 112(25) | 59(22) | - | 35(15) | 96(25) |
| Barthel<20 † | 134(31) | 67(25) | 49/32 (15) | 44(19) | 110(30) |
| Pre-event dementia | 49(10) | 30(10) | 12(4) | 13(5) | 42(10) |
| 1-year post-event dementia * | 25.4/2.2 (99/453) | 24.0/2.7 (59/283) | 22.6/2.5 (65/318) | 16.8/2.5 (37/246) | 22.5/2.3 (76/395) |
Numbers are n (%).
*
actuarial risk/standard error (n/total), excluding pre-event dementia. PICH=primary intracerebral haemorrhage.
†
Pre-morbid values.