Table 2 Prevalence, odds ratios (ORs), and 95% confidence intervals (CIs) for gastroesophageal reflux disease (GERD) among sampled patients.

From: Association between Gastroesophageal Reflux Disease and Appendicitis: A Population-Based Case-Control Study

Prior presence of GERD

Total (n = 35,565)

Patients with appendicitis (n = 7113)

Controls (n = 28,452)

n, %

n, %

n, %

Yes

1087

3.06

359

5.05

728

2.56

Crude OR (95% CI)

–

2.04*** (1.79~2.32)

1.00

Adjusted OR (95% CI)

–

2.05*** (1.80~2.33)

1.00

  1. Notes: The adjusted OR was calculated by a conditional logistic regression which was adjusted for monthly income and geographic region. ***p < 0.001.
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