GORD symptoms | COPD exacerbation | Exacerbation frequency over 6 months | |
Did not occur | Did occur | ||
Negative | 36 | 24 | 0.70 (1.20 |
Positive | 5 | 17 | 1.73 (1.58 |
p Value | <0.01 | <0.01 |
Data were evaluated by the χ2 test and the unpaired t test. The relative risk for the occurrence of exacerbation in patients with GORD symptoms compared with patients without such symptoms was 1.93 (95% CI 1.32 to 2.84; p<0.01).
COPD, chronic obstructive pulmonary disease; GORD, gastro-oesophageal reflux disease.