Table 3.

Description and calculation formula in esophageal parametrization on percentage scale

Abbreviation	Calculation		Description
DDi [%]	$\frac{(\mathit{number\; of\; D}>D_{\mathit{mean}})}{\mathit{number\; of\; D}}\mathit{X100}$	Dilated Diameter index
PPB [%]	$\frac{(\mathit{number\; of}{A}_{\mathit{node}}>0)}{\mathit{number\; of}{A}_{\mathit{node}}}\mathit{X100}$		Positive Peristalsis Behavior
NPB [%]	$\frac{(\mathit{number\; of}{A}_{\mathit{node}}<0)}{\mathit{number\; of}{A}_{\mathit{node}}}\mathit{X100}$		Negative Peristalsis Behavior