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Table 3 Baseline characteristics according to CC7 (mg/mL) quartiles (Q) in the Norwegian population (RACS)

From: Complement component 7 is associated with total- and cardiac death in chest-pain patients with suspected acute coronary syndrome

Characteristics

Total

n = 847

Q1

n = 211

Q2

n = 212

Q3

n = 213

Q4

n = 211

p value

CC7 (mg/mL)

145.2 (114.0–187.7)

99.5 (87.7–106.3)

129.1 (123.6–138.5)

163.8 (152.7–174.8)

221.2 (203.4–270.9)

 < 0.001

Age, years

72.6 (59.0–81.1)

63.1 (50.1–73.5)

69.8 (57.4–79.1)

73.7 (61.7–81.0)

79.5 (71.6–85.5)

 < 0.001

Male sex

519 (61.3)

140 (66.4)

129 (60.9)

128 (60.1)

122 (57.8)

0.32

Risk markers at baseline

      

hsCRP mg/L

4.0 (1.7–13.5)

2.6 (1.2–5.8)

3.5 (1.7–11.3)

4.0 (1.7–14.5)

8.1 (3.0–20.0)

 < 0.001

BNP pg/mL

98 (34–310)

49 (16–164)

79 (29–189)

99 (37–334)

247 (94.0–605.0)

 < 0.001

eGFR ml/min/1.73m2

63 (49–75)

70 (57–81)

65 (55–76)

63 (48–77)

53 (38–67)

 < 0.001

Total cholesterol (mmol/L)

5.2 (4.3–6.0)

5.3 (4.4–6.2)

5.4 (4.5–6.1)

5.1 (4.2–5.9)

4.8 (4.1–5.8)

0.009

Acute myocardial infarction*

366 (43.2)

79 (37.4)

104 (49.1)

94 (44.1)

89 (42.2)

0.11

TnT release (> 10 ng/L)

456 (53.8)

91 (43.1)

117 (55.2)

114 (53.5)

134 (63.5)

 < 0.001

Risk factors

      

Smoking

     

 < 0.001

Current smoking

219 (25.9)

82 (38.9)

55 (25.9)

49 (23.0)

33 (15.6)

 

Past smoking

311 (36.7)

68 (32.2)

79 (37.3)

77 (36.2)

87 (41.2)

 

Hypertension

356 (42.0)

60 (28.4)

93 (43.9)

99 (46.5)

104 (49.3)

 < 0.001

Diabetes mellitus type I

8 (0.94)

1 (0.47)

3 (1.4)

3 (1.4)

1 (0.47)

0.57

Diabetes mellitus type II

108 (12.8)

16 (7.6)

24 (11.3)

25 (11.7)

43 (20.4)

 < 0.001

Total cholesterol > 6.5 mmol/L

131 (15.5)

38 (18.0)

30 (14.2)

35 (16.4)

28 (13.3)

0.52

BMI (kg/m2)

25.3 (22.9–28.0)

25.7 (23.6–28.4)

25.5 (23.2–27.8)

25.0 (22.8–27.5)

24.9 (21.8–27.8)

0.057

History of heart disease

      

Angina pectoris

374 (44.2)

77 (36.5)

88 (41.5)

96 (45.1)

113 (53.5)

0.004

Myocardial infarction

280 (33.1)

49 (23.2)

70 (33.0)

69 (32.4)

92 (43.6)

 < 0.001

Previous CABG

87 (10.3)

20 (9.5)

18 (8.5)

25 (11.7)

24 (11.4)

0.65

Previous PCI

87 (10.3)

22 (10.4)

20 (9.4)

25 (11.7)

20 (9.5)

0.85

Heart failure

227 (26.8)

26 (12.3)

39 (18.4)

53 (24.9)

109 (51.7)

 < 0.001

Treatment prior to admission

      

ACEI/ARB

288 (34.0)

44 (20.9)

60 (28.3)

79 (37.1)

105 (49.8)

 < 0.001

Beta-blocker

304 (35.9)

61 (28.9)

80 (37.7)

74 (34.7)

89 (42.2)

0.036

Statins

293 (34.6)

66 (31.3)

65 (30.7)

85 (39.9)

77 (36.5)

0.14

  1. Data are presented as median (interquartile range) or numbers (%). * For the diagnosis of an acute myocardial infarction, we applied a cut-off value for TnT of 50 ng/L
  2. CC7, complement component 7; hs-CRP, high-sensitivity C-reactive protein; BNP, B-type natriuretic peptide; eGFR, estimated glomerular filtration rate; TnT, troponin-T; BMI, body mass index; CABG, coronary artery bypass grafting; PCI, percutaneous coronary intervention; ACEI/ARB, angiotensin converting enzyme inhibitor or angiotensin receptor blocker