Table 1

Background data for patients with rheumatoid arthritis (RA)

Bisphosphonate group

(n = 42)

Bisphosphonate + statin group

(n = 35)

P-value

(Student's t-test)


Age, years

66.4 ± 6.2 (49.3, 77.6)

65.3 ± 6.8 (52, 76.8)

0.463

Sex

Male

2

0

Female

40

35

59 >

3

8

60-69

24

17

70 <

13

10

Disease duration, years

24.9 ± 10.6 (6.1, 54.3)

20.8 ± 8.9 (5.9, 38.)

0.083

Bisphosphonates

Alendronate

31

26

Etidronate

4

5

Risedronate

7

4

Administered

> 4 years

29

22

1 to 4 years

13

13

Prednisolone, mg

2.4 ± 2.0 (0, 6.0)

2.8 ± 2.1 (0, 7.0)

0.355

+

30

28

-

12

7

Methotrexate, mg

5.2 ± 3.2 (0, 10)

4.1 ± 3.1 (0, 10)

0.140

+

34

25

-

8

10

Vitamin D3, μg

0.5

0.5

+

7

3

-

35

32


Results are presented as mean ± SD (range) or number of patients. P-values are for comparisons between the two treatment groups.

Nagashima et al. Arthritis Research & Therapy 2012 14:R224   doi:10.1186/ar4063

Open Data