Table 4.
Factors of dementia subgroup stratified by study sample by using Cox regression and Fine and Gray's competing risk model.
| ECT (With vs. Without) | No competing risk in the model | Competing risk in the model | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Psychiatric disorders | Dementia types | Adjusted HR | 95% CI | 95% CI | P | Adjusted HR | 95% CI | 95% CI | P |
| Total | Total | 0.777 | 0.582 | 1.298 | 0.236 | 0.764 | 0.538 | 1.086 | 0.133 |
| AD | 1.496 | 0.644 | 3.054 | 0.374 | 1.458 | 0.608 | 2.460 | 0.337 | |
| VaD | 0.984 | 0.602 | 5.723 | 0.470 | 0.938 | 0.692 | 4.473 | 0.363 | |
| Other dementia | 0.735 | 0.540 | 1.276 | 0.157 | 0.724 | 0.501 | 1.069 | 0.109 | |
| Schizophrenia | Total | 0.528 | 0.316 | 1.203 | 0.308 | 0.518 | 0.304 | 1.023 | 0.152 |
| AD | - | - | - | - | - | - | - | - | |
| VaD | 0 | - | - | 0.513 | 0 | - | - | 0.423 | |
| Other dementia | 0.508 | 0.293 | 1.182 | 0.107 | 0.499 | 0.282 | 1.005 | 0.096 | |
| Bipolar disorders | Total | 1.692 | 0.605 | 2.861 | 0.267 | 1.616 | 0.584 | 2.385 | 0.228 |
| AD | 1.082 | 0.069 | 10.193 | 0.509 | 1.079 | 0.065 | 8.742 | 0.414 | |
| VaD | - | - | - | - | - | - | - | - | |
| Other dementia | 1.865 | 0.580 | 3.460 | 0.249 | 1.820 | 0.563 | 2.919 | 0.208 | |
| Major depressive disorders | Total | 0.942 | 0.604 | 3.460 | 0.249 | 0.865 | 0.563 | 2.919 | 0.208 |
| AD | 0.956 | 0.190 | 2.921 | 0.433 | 0.935 | 0.175 | 2.362 | 0.335 | |
| VaD | 1.406 | 0.127 | 9.442 | 0.469 | 1.224 | 0.104 | 6.809 | 0.434 | |
| Other dementia | 0.902 | 0.559 | 1.072 | 0.182 | 0.809 | 0.527 | 1.069 | 0.124 | |
AD, Alzheimer dementia; VaD, vascular dementia; HR, hazard ratio; CI, confidence interval; Adjusted HR, Adjusted for gender, age, comorbidities, urbanization level, location, and insured premium.