Mean QOLRAD scores (error bars represent 95% confidence intervals) according to the presence and frequency of regurgitation at baseline for patients with (A) NERD (B) RO. *The number of patients with daily regurgitation in the physical/social functioning dimension was 387, rather than 388 as in the other dimensions (missing data).
NERD, non-erosive reflux disease; QOLRAD, The Quality of Life in Reflux and Dyspepsia; regurgitation, the presence of an acid taste in the mouth and/or unpleasant movement of material upwards from the stomach; RO, reflux oesophagitis.