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Table 2 Characteristics of participants with positive/non-conclusive or negative test (n= 850)

From: Diagnostic characteristics and prognoses of primary-care patients referred for clinical exercise testing: a prospective observational study

 

Exercise test

Positive/non-conclusive*

Negative**

p

Patients

n=197 (23.2%)

n=653 (76.8%)

 

Age, mean (SD)

66 (11)

62 (12)

<0.001

Men

106 (53.8%)

325 (49.8%)

0.321

Smoker, current or previous

108 (54.8%)

342 (52.8%)

0.615

Past medical history

   

  Myocardial infarction

25 (12.8%)

49 (7.6%)

0.024

  Revascularization

30 (15.2%)

44 (6.8%)

<0.001

  Stroke or TIA

16 (8.1%)

35 (5.4%)

0.171

  Previous cardiovascular event

47 (24.0%)

88 (13.7%)

0.001

Present conditions

   

  Hypertension, medication for

120 (61.5%)

332 (51.4%)

0.013

  Diabetes mellitus, treatment for

24 (12.2%)

69 (10.7%)

0.541

  Dyslipidaemia, medication for

78 (40.0%)

157 (24.4%)

<0.001

  Congestive heart failure, medication for

30 (15.6%)

70 (11.1%)

0.094

  Claudication

14 (7.4%)

33 (5.2%)

0.247

Chest pain symptoms

   

  Ever have chest pain or discomfort in the chest

138 (72.3%)

436 (69.0%)

0.390

  Chest pain walking at an ordinary pace on the level

50 (26.0%)

69 (10.8%)

<0.001

  Chest pain walking uphill or in a hurry

134 (69.1%)

264 (42.0%)

<0.001

Angina diagnosis according to patient’s opinion

80 (43.2%)

126 (20.9%)

<0.001

Systolic blood pressure (mm Hg), mean (SD)

151 (21)

146 (19)

0.001

Resting ECG

   

  Normal resting ECG

132 (67.0%)

507 (77.6%)

0.003

  Atrial fibrillation

14 (7.1%)

22 (3.4%)

0.026

  Atrioventricular block

4 (2.0%)

19 (2.9%)

0.507

  Signs of myocardial scarring

17 (8.6%)

55 (8.4%)

0.927

  Pathologic ST-T segment on resting ECG

42 (21.3%)

62 (9.5%)

<0.001

  1. *Positive exercise test: angina symptoms and depression of ST segment >0.1 mV during the test. Non-conclusive test: angina or ST depression. **Negative test: neither angina nor ST depression. SD: standard deviation. TIA: transitory ischaemic attack. ECG: electrocardiogram. Cardiovascular event: myocardial infarction, revascularization, stroke, or TIA. Myocardial scarring: pathologic Q-wave or altered R-wave progression compared to previous ECG.