Prevalence of linked angina and gastroesophageal reflux disease in general practice

Table 1 Characteristics of study participants

Cardiogram	Abnormal	Normal	P
No. of patients	456	1514
Age (yr)	48.2 ± 17.6 (16-91)	40.7 ± 15.7 (15-93)	< 0.001
Male/female	231/225	703/811	< 0.05
Hypertension	49/407	84/1430	< 0.001
Diabetes	36/420	45/1469	< 0.001
Hyperlipidemia	79/377	146/1473	< 0.001
Current smoker	156/300	488/1026	NS

Table 2 Relationship between GERD symptoms and ECG abmormalities

Cardiogram	Abnormal	Normal
GERD (+)	8	166
GERD (-)	20	261

Table 3 Number of patients undergoing additional cardiological tests

	GERD (+) n = 171 Abnormal findings		GERD (-) n = 285 Abnormal findings
	(+)	(-)	(+)	(-)
ECG	8	163	20	265
Exercised thallium test	2	10	5	13
Cardioangiography	1	0	4	3