Table 1 Clinical and demographic characteristics of RA patients prior to pneumococcal vaccination

Male/female

12/23

11/44

4/17

0.251

Age, mean ± SD (years)

70.5 ± 10.8

63.8 ± 11.5

59.8 ± 12.0

0.002

Weight, mean ± SD (Kg)

53.3 ± 9.5

52.9 ± 11.8

55.2 ± 10.1

0.501

BMI, mean ± SD

21.8 ± 3.5

21.7 ± 3.7

23.2 ± 4.9

0.344

RA duration, mean ± SD (years)

11.7 ± 12.5

14.1 ± 10.9

13.5 ± 11.2

0.144

MTX dose, mean ± SD (mg/week)

-

7.8 ± 2.4

7.2 ± 3.4(15/21)

-

ABT dose, mean ± SD (mg/4 week)

-

-

547.6 ± 127.9

-

Use of prednisolone, number of patients (%)

21 (60.0)

30 (54.5)

13(61.9)

0.798

Prednisolone dose, mean ± SD (mg/day)

6.06 ± 4.23

4.98 ± 2.97

5.04 ± 2.85

0.769

DAS28(CRP), mean ± SD

2.79 ± 1.17

2.61 ± 0.98

2.48 ± 1.31

0.565

SDAI, mean ± SD

9.03 ± 6.32

8.15 ± 7.33

8.32 ± 7.29

0.593

CDAI, mean ± SD

7.83 ± 5.40

7.46 ± 6.73

7.87 ± 6.54

0.721

IP (%)

6 (17.1)

7 (12.7)

3(14.3)

0.844

COPD (%)

3 (8.6)

1 (1.8)

2(9.5)

0.251

Smoking history (%)

10(28.6)

13(23.6)

6(28.6)

0.839