Table 1.
Demographic and baseline clinical characteristics of patients with PD who underwent DBS surgery.
| Variable | N = 257 |
|---|---|
| Sex | |
| Women | 142 (55.3%) |
| Men | 115 (44.7%) |
| Age at surgery | 58.3 ± 8.2 years |
| Age of onset | 46.9 ± 9.5 years |
| Disease duration at surgery | 11.5 ± 4.6 years |
| LEDD total preop | 1362.8 ± 674.0 |
| HY stage preop on-medication | |
| ≤ 2.5 | 188 (73.2%) |
| 3 | 68 (26.5%) |
| 4 | 1 (0.4%) |
| MMSE score (n = 243) | 27.3 ± 2.5 |
| Depression (n = 245) | 151 (58.8%) |
| UPDRS-III score preop on-medication | 21.1 ± 11.7 |
| UPDRS-III score preop off-medication | 41.6 ± 14.9 |
| (n = 251) | |
| Preop axial symptom score | 6.5 ± 3.4 |
PD, Parkinson's disease; DBS, deep brain stimulation; LEDD, levodopa equivalent daily dose; preop, preoperative; HY, Hoehn and Yahr; MMSE, Korean mini-mental state examination; UPDRS, unified Parkinson's disease rating scale.