Table 3

Summary of efficacy outcomes at week 12 with subgroup analysis according to previous treatment failure

Parameter

PP OCs

ITT LOCF



All patients

Resistance to

anti-TNFα

Resistance to MTX

All patients

Resistance to

anti-TNFα

Resistance to

MTX


ACRa

(n = 27)

(n = 14)

(n = 23)

(n = 39)

(n = 19)

(n = 32)

ACR20

15/27 (55.6%)

8/14 (57.1%)

14/23 (60.9%)

21/39 (53.8%)

10/19 (52.6%)

17/32 (53.1%)

ACR50

9/27 (33.3%)

4/14 (28.6%)

9/23 (39.1%)

10/39 (25.6%)

4/19 (21.1%)

9/32 (28.1%)

ACR70

3/27 (11.1%)

1/14 (7.1%)

3/23 (13.0%)

3/39 (7.7%)

1/19 (5.3%)

3/32 (9.4%)

ACRn

Mean ± SD

31.6 ± 33.5

28.1 ± 32.1

36.6 ± 31.6

23.0 ± 37.5

18.7 ± 36.8

24.1 ± 38.8

Median

42.9

44.3

46.9

25.7

20.6

32.7

Range

-40.0–87.5

-40.0–72.2

-40.0–87.5

-62.5–87.5

-62.5–72.2

-62.5–87.5

CRP

(n = 28)

(n = 14)

(n = 23)

(n = 35)

(n = 17)

(n = 29)

Improvement > 50%

14/28 (50.0%)

7/14 (50.0%)

12/23 (52.2%)

19/35 (54.3%)

9/17 (52.9%)

16/29 (55.2%)

25% < improvement ≤ 50%

3/28 (10.7%)

1/14 (7.1%)

2/23 (8.7%)

4/35 (11.4%)

2/17 (11.8%)

3/29 (10.3%)

0% ≤ improvement ≤ 25%

5/28 (17.9%)

1/14 (7.1%)

3/23 (13.0%)

5/35 (14.3%)

1/17 (5.9%)

3/29 (10.3%)

Stability

3/28 (11%)

3/14 (21%)

3/23 (13%)

3/35 (9%)

3/17 (18%)

3/29 (10%)

Deterioration

3/28 (11%)

2/14 (14%)

3/23 (13%)

4/35 (11%)

2/17 (12%)

4/29 (14%)

DAS28

(n = 24)

(n = 13)

(n = 20)

(n = 34)

(n = 18)

(n = 28)

Mean ± SD

4.6 ± 1.3

5.1 ± 1.2

4.6 ± 1.4

4.8 ± 1.5

5.2 ± 1.1

4.8 ± 1.5

ΔDAS28

2.0

1.8

2.1

1.7

1.7

1.8

Range

0.5–7.0

3.3–7.0

0.5–7.0

0.5–7.0

3.3–7.0

0.5–7.0

DAS28 < 2.6

1/24 (4.2%)

0/28 (0%)

1/20 (5.0%)

2/34 (5.9%)

0/18 (0%)

2/28 (7.1%)

DAS28 ≤ 3.2

1/24 (4.2%)

0/28 (0%)

1/20 (5.0%)

2/34 (5.9%)

0/18 (0%)

2/28 (7.1%)


aPrimary efficacy outcome. American College of Rheumatology (ACR) results are presented as the cumulative number of patients reaching each ACR level. Population sizes could vary with respect to an efficacy endpoint due to the fact that, for some patients, all efficacy data under treatment were missing (no data imputation was possible in this case). ACR20/50/70, American College of Rheumatology 20%/50%/70% improvement criteria; ACRn, index of improvement in rheumatoid arthritis; anti-TNFα, anti-tumour necrosis factor-alpha; CRP, C-reactive protein; DAS28, disease activity score using 28 joint counts; ΔDAS28, the change in disease activity score using 28 joint counts from baseline; ITT, intention-to-treat; LOCF, last observation carried forward; MTX, methotrexate; OC, observed case; PP, per protocol population; SD, standard deviation.

Tebib et al. Arthritis Research & Therapy 2009 11:R95   doi:10.1186/ar2740

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