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| Prior Dilation N (%) | No Dilation N (%) | P value | |
|---|---|---|---|
| Total number of patients | 11 | 23 | <0.01 |
| Patients with follow-up | 10 (91) | 20 (87) | 1.0 |
| Esophageal dilation | 4 (36) | 14 (61) | 0.27 |
| Heller myotomy | 7 (64) | 9 (39) | 0.27 |
| Early complications | 2 (20) | 4 (20) | 1.0 |
| Symptom recurrence | 7 (70) | 16 (80) | 0.66 |
| Additional surgery | 6 (60) | 14 (70) | 0.69 |
