Table 1.
Demographics and pre- and postoperative incidence of chronic pain
| Total n = 3279 | Demographics | ||
| Gender | |||
| Male n (%) | 574 (17.5) | ||
| Female n (%) | 2705 (82.5) | ||
|
Age at e-survey mean ± sd |
49.16 ± 11.2 | ||
| RYGB§ | 2724 (83.1) | ||
| Sleeve gastrectomy | 555 (16.9) | ||
| Time between operation and e-survey—years ± sd | 3.43 ± 1.61 | ||
| Preoperative | Postoperative | p value* | |
| Weight (kg) mean ± sd | 129.10 ± 21.63 | 87.37 ± 18.73 | < 0.001a |
| BMI (kg/m2) | 44.7 ± 6.0 | 30.3 ± 5.7 | < 0.001a |
| %EWL | - | 68.04 ± 24.05 | - |
| %TWL | 31.8 ± 10.4 | - | |
| Incidence of chronic pain n (%) | |||
| Incidence of chronic pain | 343 (10.5) | 264 (8.1) | < 0.001b |
| Patients who had preoperative pain and continuing postoperative | 156 (4.8) | - | - |
| Patients who had preoperative chronic pain but are no longer postoperative | 186 (5.7) | - | - |
| Patients without preoperative chronic pain but suffering from chronic pain postoperative | - | 108 (3.3) | - |
| Location of pain n (%) | |||
| Back | 213 (6.5) | 149 (3.8) | < 0.001 b |
| Pelvis/buttocks/thighs | 121 (3.7) | 75 (2.3) | < 0.001 b |
| Knee | 213 (6.5) | 72 (2.2) | < 0.001 b |
| Lower legs/feet | 151 (4.6) | 54 (1.6) | < 0.001 b |
| Abdomen | 73 (2.2) | 149 (4.5) | < 0.001 b |
*p < 0.05 was considered statistically significant
aPaired sample T-test
bMcNemar paired test
§Roux-en-Y gastric bypass