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Table 3 Comparison of cardiovascular risk factors among patient groupsa

From: Risk stratification of patients in an emergency department chest pain unit: prognostic value of exercise treadmill testing using the Duke score

Risk factor

All study groups

Duke score group

Exercise treadmill test

Alternative stress test

Low risk (n = 454)

Moderate/high risk (n = 145)

No (n = 201)

Yes (n = 599)

No (n = 113)

Yes (n = 88)

Age at evaluation, years

 Mean

56.5

52

60

64.4

53.9

62.1

67.4

 Median (range)

55 (19-94)

51 (21-89)

60 (20-87)

67.0 (19-94)

53.0 (20-89)

65.0 (19-93)

71.5 (30-94)

Sex, no. of patients (%)

 Female

361 (45.1)

186 (41.0)

78 (53.8)

97 (48.3)

264 (44.1)b

50 (44.2)

47 (53.4)b

 Male

439 (54.9)

268 (59.0)

67 (46.2)

104 (51.7)

335 (55.9)b

63 (55.8)

41 (46.6)b

Family history of cardiovascular disease, no. of patients (%)

92 (11.5)

51 (11.2)

23 (15.9)b

18 (9.0)

74 (12.4)b

13 (11.5)

5 (5.7)b

History of, no. of patients (%)

 Smoking

170 (21.3)

93 (20.5)

34 (23.4)b

43 (21.4)

127 (21.2)b

28 (24.8)

15 (17.0)b

 Hypertension

318 (39.8)

141 (31.1)

68 (46.9)

109 (54.2)

209 (34.9)

59 (52.2)

50 (56.8)b

 Diabetes mellitus

88 (11.0)

29 (6.4)

20 (13.8)

39 (19.4)

49 (8.2)

20 (17.7)

19 (21.6)b

 Hypercholesterolaemia

340 (42.5)

160 (35.2)

77 (53.1)

103 (51.2)

237 (39.6)

62 (54.9)

41 (46.6)b

Previous myocardial infarction, no. of patients (%)

69 (8.6)

23 (5.1)

12 (8.3)b

34 (16.9)

35 (5.8)

22 (19.5)

12 (13.6)b

  1. aOn the basis of univariate analyses of patients undergoing exercise treadmill testing, those with the following characteristics were significantly more likely to have moderate or high Duke score: older age, female, hypertension, diabetes mellitus or hypercholesterolaemia
  2. bDifference is not statistically significant (P > .05)