Table 1: Distribution of gastro esophageal reflux disease (GERD) by demographic and socioeconomic characteristics of a representative sample of Albanian adults.

VariableNo GERDGERDOR (95% CI)cP value

Sex
 Men 298 (86.4)a47 (13.6)1.30 (0.86–1.98)0.215
 Women446 (89.2)54 (10.8)1.00 (reference)
Age (years) 52.0 (32.0)b57.0 (25.0)1.02 (1.01–1.03)0.001
Age
 ≤40 years240 (91.6)22 (8.4)1.00 (reference)0.015
 >40 years465 (85.5)79 (14.5)1.85 (1.13–3.05)
Educational level (years)12.0 (4.0)b12.0 (6.75)0.92 (0.87–0.98)0.003
Educational level0.018 (2) d
 Low (0–8) years111 (81.6)25 (18.4)2.23 (1.27–3.93)0.005
 Middle (9–12) years273 (86.4)43 (13.6)1.56 (0.96–2.53)0.072
 High (≥13 years)317 (90.8)32 (9.2)1.00 (reference)
Income level0.474 (2)
 Low83 (84.7)15 (15.3)1.57 (0.75–3.27)0.232
 Middle450 (87.0)67 (13.0)1.29 (0.74–2.24)0.365
 High156 (89.7)18 (10.3)1.00 (reference)

Numbers and row percentages (in parentheses). Discrepancies in the totals are due to missing covariate values.
Median and interquartile range (in parentheses).
Unadjusted (crude) odds ratios (ORs: GERD versus no GERD), 95% confidence intervals (95% CIs), and P values from binary logistic regression.
Overall P value and degrees of freedom (in parentheses).