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Technical investigations.
| n | % | |
|---|---|---|
| Endoscopy + scintigraphy | 58 | 47 |
| Endoscopy + scintigraphy + 24-h pH study | 33 | 27 |
| 24-h pH study + endoscopy | 15 | 12 |
| 24-h pH study + scintigraphy | 5 | 4 |
| Endoscopy + UGI | 4 | 3 |
| 24-h pH study + UGI | 3 | 2 |
| UGI + endoscopy + scintigraphy | 2 | 1 |
| Scintigraphy + 24-h pH study + UGI | 1 | 1 |
| Endoscopy + scintigraphy + 24-h pH study + UGI | 1 | 1 |
