Table III.
Univariate and multiple logistic regression of predictors of GREC
| Characteristic | Univariate analysis |
Multiple analysis |
||||
|---|---|---|---|---|---|---|
| OR | 95% CI | P value | OR | 95% CI | P value | |
| Age | 0.989 | 0.977-1.002 | .1001 | 0.999 | 0.984-1.014 | .8620 |
| Sex: female | 0.634 | 0.447-0.899 | .0106 | 0.860 | 0.573-1.291 | .4658 |
| Nonproductive cough | 2.628 | 1.725-4.005 | <.0001 | 2.508 | 1.587-3.965 | <.0001 |
| Daily cough alone | 2.223 | 1.524-3.242 | <.0001 | 1.989 | 1.295-3.053 | .0017 |
| Trigger-after meals | 3.444 | 2.229-5.321 | <.0001 | 2.312 | 1.398-3.822 | .0011 |
| Heartburn | 5.468 | 3.390-8.820 | <.0001 | 2.671 | 1.544-4.620 | .0004 |
| Belching | 4.093 | 2.813-5.954 | <.0001 | 2.536 | 1.620-3.971 | <.0001 |
| Acid regurgitation | 4.060 | 2.792-5.905 | <.0001 | 2.043 | 1.299-3.212 | .0020 |
| Frequent throat clearing | 1.558 | 1.119-2.253 | .0097 | 1.467 | 0.992-2.170 | .0551 |
| History of gastrointestinal disorders | 2.360 | 1.627-3.424 | <.0001 | |||
| Trigger-eating | 2.383 | 1.426-3.984 | .0009 | |||
| Trigger-talking | 1.759 | 1.236-2.504 | .0017 | |||