Gastroesophageal reflux disease after diagnostic endoscopy in the clinical setting

Table 2 Baseline comparisons of patients from the different study sites

Variable	RAH-tertiary referral centre (n = 173)	LMH-community Hospital (n = 93)	P value
Age, yr, mean ± SD (range)	48 ± 12.5 (19-65)	51.5 ± 10.2 (23-65)	0.027
Disadvantaged SES	56%	74.4%	< 0.001
LA-Grade NERD	46.8%	61.3%	0.024
LA-Grade C/D	21.4%	6.4%	0.024
Smoking	14.7%	31.3%	0.007
Alcohol (daily or > 5 Std. drinks/d)	17.1%	12.7%	0.701
Male gender	48.6%	60.2%	0.171
BMI > 30 kg/m2	32.1%	44.1%	0.064

SES: Socioeconomic status; LA: Los-Angeles; NERD: Non erosive gastroesophageal reflux disease; BMI: Body mass index; Std.: Standard; RAH: Royal Adelaide Hospital; LMH: Lyell McEwin Hospital.