Skip to main content

Table 1 Baseline characteristics according to CRP level groups

From: C-reactive protein for prediction of atrial fibrillation recurrence after catheter ablation

 

CRP Level

 

Characteristic

Quartile 1

(N = 201)

Quartile 2

(N = 171)

Quartile 3

(N = 167)

Quartile 4

(N = 172)

P trend

Age, years

59.1 ± 10.7

60.1 ± 8.8

61.5 ± 8.8

61.6 ± 9.5

0.016

Female sex

42 (21)

36 (21)

45 (27)

50 (30)

0.019

Body mass index, kg/m2

25.4 ± 3.9

27.4 ± 4.0

27.7 ± 4.3

29.2 ± 6.1

< 0.001

Systolic blood pressure, mm Hg

135 ± 17

135 ± 18

135 ± 18

136 ± 20

0.78

Type of atrial fibrillation

    

< 0.001

 Paroxysmal

139 (70)

108 (63)

97 (58)

90 (52)

 

 Persistent

61 (30)

63 (37)

69 (42)

82 (48)

 

Atrial fibrillation duration, years

2.3 (0.6–6.6)

1.7 (0.5–4.8)

2.2 (0.6–6.1)

2.0 (0.6–5.6)

0.72

Echocardiographic parameters

 LAD, mm

39 ± 7

42 ± 7

42 ± 7

43 ± 6

< 0.001

 LVEF, %

58 ± 10

57 ± 9

57 ± 10

55 ± 12

< 0.001

Laboratory data

 WBC, mm3

5860 (5020–6840)

6135 (5135–7515)

6440 (5290–7820)

6900 (5740–8400)

< 0.001

 Serum creatinine, μmol/l

84 (74–95)

82 (74–93)

83 (72–94)

84 (73–97)

0.94

Medical history

 Coexistent atrial flutter

36 (18)

35 (20)

30 (18)

29 (17)

0.68

 Hypertension

93 (47)

84 (50)

90 (54)

117 (69)

< 0.001

 Diabetes

13 (7)

10 (6)

12 (7)

20 (12)

0.07

 Stroke

20 (10)

9 (5)

10 (6)

15 (9)

0.64

 Heart failure

11 (6)

11 (7)

16 (10)

26 (15)

0.001

 Myocardial infarction

9 (5)

8 (5)

8 (5)

13 (8)

0.23

History of amiodarone treatment

    

< 0.001

 Current

30 (15)

25 (15)

29 (17)

37 (22)

 

 Previous use

24 (12)

29 (17)

30 (18)

40 (23)

 

 Never use

147 (73)

117 (68)

108 (65)

95 (55)

 
  1. Data are presented as means ± standard deviations or medians (interquartile range), and counts (percentages)
  2. P values compares quartiles of CRP levels
  3. Abbreviations: LAD left atrial diameter, LVEF left ventricular ejection fraction, WBC white blood cell count