Table 4 Final model to predict two week symptom severity score.

Variable	Partial r2	p Value
Age	0.3%	0.14
Female sex	0.7%	0.02
Body mass index	0.9%	0.006
Gastric emptying
1 h	0.1%	0.34
2 h	<0.1%	0.56
4 h	0.7%	0.01
Centre type
Primary	0.1%	0.27
Tertiary	3.1%	<0.001

Partial r² values from the multiple linear regression model reflect all variables included in the model.