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Table 1 Baseline characteristics of the patients according to the seroconversion or not

From: Risk factors affecting seroconversion after influenza A/H1N1 vaccination in hemodialysis patients

Variables

All patients (n = 97)

Nonresponders (n = 67)

Responders (n = 30)

P-value

Age (years)

60.9 ± 12.6

63.1 ± 12.0

56.3 ± 12.6

0.012

Sex (Male,%)

54 (56.7)

35 (53.0)

19 (61.3)

0.445

Diabetes Mellitus (%)

62 (63.9)

44 (65.7)

18 (60.0)

0.591

Body mass index (Kg/m2)

22.7 ± 3.5

22.7 ± 3.6

22.8 ± 3.4

0.898

Duration of dialysis (mo)*

41.0 (25–41)

37.5 (22.8-66.3)

53.0 (31.0-82.0)

0.082

KT/V

1.44 ± 0.32

1.44 ± 0.33

1.41 ± 0.28

0.705

Urea reduction rate (%)

69.3 ± 7.9

70.0 ± 7.8

67.8 ± 8.2

0.193

Hepatitis B or C (%)

8 (8.2)

5 (7.5)

3 (10.0)

0.708

Medications (%)

    

Angiotensin converting enzyme inhibitor

18 (18.6)

11 (16.4)

7 (23.3%)

0.418

Angiotensin II receptor blocker

60 (61.9)

37 (55.2)

23 (76.7)

0.044

Calcium channel blocker

60 (61.9)

41 (61.2)

19 (63.3)

0.841

Beta blocker

49 (50.5)

30 (44.8)

19 (63.3)

0.194

Diuretics

53 (54.6)

38 (56.7)

15 (50.0)

0.539

Statins

40 (42.3)

28 (41.8)

12 (40.0)

0.868

Vitamin D analogue

5 (5.2)

4 (6.0)

1 (3.3)

0.587

White blood cell (/mm3)

6,450 ± 1,846

6,490 ± 1,977

6,368 ± 1,561

0.765

Lymphocyte count (/mm3)

1,376 ± 547

1,432 ± 568

1,225 ± 479

0.313

Hemoglobin (g/dL)

10.2 ± 1.1

10.0 ± 1.14

10.5 ± 0.85

0.032

MCV (fL)

93.7 ± 5.1

94.4 ± 5.3

91.4 ± 3.6

0.075

MCH (pg)

30.9 ± 1.7

31.1 ± 1.7

30.4 ± 1.3

0.153

MCHC (g/dL)

33.1 ± 1.1

33.0 ± 1.1

33.2 ± 1.1

0.546

Ferritin (ng/mL)*

159 (107–255)

159 (98–255)

155 (108–259)

0.367

C-reactive protein (mg/L)*

1.1 (0.5-4.7)

1.1 (0.5-4.3)

2.5 (0.45-6.1)

0.446

Glucose (mg/dL)

133 ± 48

134 ± 48

130 ± 48

0.74

Uric acid (mg/dL)

7.3 ± 1.3

7.2 ± 1.3

7.4 ± 1.4

0.241

Total Cholesterol (mg/dL)

149 ± 35

153 ± 40

149 ± 27

0.477

Albumin (g/dL)

4.0 ± 0.4

4.0 ± 0.4

4.0 ± 0.3

0.874

Alkaline phosphatase (IU/L)

91 ± 55

84 ± 50

101 ± 62

0.170

Total bilirubin (mg/dL)

0.31 ± 0.14

0.32 ± 0.15

0.29 ± 0.12

0.422

Triglyceride (mg/dL)

129 ± 94

133 ± 106

117 ± 60

0.351

HDL-cholesterol (mg/dL)

38 ± 13

37 ± 13

41 ± 14

0.332

Intact-parathyroid hormone (pg/mL)

160 ± 97

148 ± 96

188 ± 97

0.069

  1. * was expressed by median (interquartile range).