Table 1.
Clinical characteristics of participants
| Characteristic | Patients with PD (N = 97) | Controls (N = 94) | p-value |
|---|---|---|---|
| Sex, no. (%) | |||
| Male | 57 (58.8) | 60 (63.8) | 0.472 |
| Female | 40 (41.2) | 34 (36.2) | |
| Age, mean (SD), yr | |||
| At surgery | 71.0 (6.9) | 70.9 (6.8) | 0.913 |
| At the final follow-up visit | 75.8 (7.0) | 78.6 (7.1) | 0.007 |
| At symptom onset | 66.8 (7.9) | ||
| At diagnosis | 68.6 (8.0) | ||
| Duration, mean (SD), yr | |||
| Onset to surgery | 4.2 (4.9) | ||
| Onset to diagnosis | 1.8 (2.3) | ||
| Onset to the final follow-up visit | 9.0 (4.7) | ||
| Surgery to the final follow-up visit | 4.8 (3.6) | 7.7 (2.3) | <0.001 |
| Frequency of patients who underwent surgery before the symptom onset, No. (%) | 12 (12.4) | ||
| HY stage at the year of surgery (available in 29 patients), no. (%) | |||
| 1 | 4 (4.1) | ||
| 2 | 7 (7.2) | ||
| 2.5 | 9 (9.3) | ||
| 3 | 9 (9.3) | ||
| Surgical site, no. (%) | |||
| UGI (stomach + esophagus)a | 55 (56.7) | 53 (56.4) | 0.965 |
| LGI (colon + rectum) | 42 (43.3) | 41 (43.6) | |
PD Parkinson’s disease, HY Hoehn and Yahr, UGI upper gastrointestinal tract, LGI lower gastrointestinal tract.
aNumber of patients who received esophagectomy was 2 and none in patients with PD and controls, respectively.