Table 3

Clinical correlates

	Patients (n = 61)	PT (+) (n = 26)	Motility (n = 12)	GOR (n = 21)	SR (n = 14)
Chest pain characteristics
Duration ⩽5 min	36	31	33	57	57
Predictability 10/10	38	35	50	38	50
Rest pain ⩽2/10	34	35	33	48	57
Typical pain	28	31	33	43	57
Symptoms of GORD
Heartburn	34	35	33	33	43
Dysphagia	23	31	8	24	36
Waterbrash	33	38	33	38	43
Any of the above	54	54	50	52	64
Abnormal ECG	23	19	17	24	14

Results are expressed as percentages.
PT (+), provocation test positive; GOR, abnormal gastro-oesophageal reflux during ambulatory pH monitoring; SR, symptomatic reflux during ambulatory pH monitoring.