Mean SF-36v2 Physical and Mental Component summary scores by RESQ-7 Heartburn domain frequency (a) and severity (b) at 6 months’ follow-up. For both scores, 0 represents worse and 100 represents best health status. Norm values are means derived from the 1998 SF-36 Health Survey of the US general population. Frequency and severity of symptoms were based on the item within the domain with the highest frequency. The relationship between symptoms and SF-36v2 results is described at the 6-month assessment, since the number of patients in each symptom category was most evenly distributed at this time point.