Fasting salivary pepsin level as a reliable non-invasive method of screening for laryngopharyngeal reflux in Egyptian patients

The Egyptian Journal of Internal Medicine

Table 3 Multiple regression model for the factors affecting salivary pepsin using forward method

Predictor factor	β	SE	P
(Constant)	− 7.8263
Age	0.2229	0.07945	0.0074**
Urea	0.3929	0.1597	0.017*
Laryngoscope abnormality	5.6049	2.0799	0.0099**
pH-metry (% Time pH < 4)	0.03024	0.01448	0.042*

Other factors excluded from the model as (p value > 0.1), β Regression coefficient, SE Standard error
** high statistical significance, *statistically significant