Table 2.

 Breakdown of reflux event tally based on whether events were short (one or two data points for the catheter system or only one for the bravo system) or long

	Slimline catheter		Bravo
	Short events	Long events	Short events	Long events
No of events/24 h (mean (SD))	45.5 (25.5)*†	24.3 (18.6)	18.5 (9.5)	19.4 (14.9)
Concordance with Bravo (%)	32.7	76.8	–	–
Concordance with catheter (%)	–	–	49.3	93.5
Nadir pH of events (mean (SD))	3.1 (0.2)*†	2.8 (0.4)*	3.5 (0.3)†	3.1 (0.3)
Total integrated acidity, all subjects (mmol min/l)	162.1	1986.8	15.0	1430.1

*p<0.05, catheter versus Bravo similar reflux event duration; †p<0.05, short versus long within pH system (catheter or Bravo).