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Table 6 Adverse events in patients being treated with anti-TNFα drugs versus control

From: Tumor necrosis factor alpha drugs in rheumatoid arthritis: systematic review and metaanalysis of efficacy and safety

ADVERSE EVENTS (anti TNFα vs. control) (references)

Anti-TNFα

Anti-TNFα Adverse events/total

Controls Adverse events/total

RR (95%CI)

NNH(95%CI)

Q

I2 %

Withdrawn adverse event

Adalimumab

131/1922

44/947

1.4(1.0–2.0)

47(26–251)

1.2

0

(4826 vs. 2261)

Etanercept

103/1082

75/555

0.7(0.5–0.9)

-26(-143 a -14)

2.4

0

** (19,20,22,23,24,25,26,28,29,30,31,32,33)

Infliximab

134/1822

24/759

2.0(1.3–3.1)

24(17–41)

4.9

0

 

Total

368/4826

143/2261

1.3(0.7–2.4)

NS

29.3*

59

Total adverse events (3228 vs. 1564) (19,23,28,30,31,32,33)

Adalimumab

1619/1713

806/885

1.1(0.9–1.1)

NS

1.9

0

(3228 vs. 1564)

Etanercept

379/454

185/228

1.0(0.9–1.1)

NS

0

0

(19,23,28,30,31,32,33)

Infliximab

835/1061

322/45

1.0(0.9–1.0)

NS

1.6

39

 

Total

2833/3228

1313/1564

1.0(1.0–1.5)

27(17–59)

2.9

0

Serious adverse events

Adalimumab

167/1171

75/628

1.0(0.7–1.4)

NS

2.6

25

(3235 vs. 1615)

Etanercept

64/454

37/228

0.9(0.5–1.6)

NS

0

0

(19,20,22,23,28,30,31,32)

Infliximab

217/1610

77/759

1.4(1.0–2.0)

31(17–167)

6.2

52

 

Total

448/3235

189/1615

1.1(0.8–1.6)

NS

14.3*

51

Infections

Adalimumab

435/737

268/518

1.1(0.9–1.2)

NS

0.7

0

(2341 vs. 1162)

Etanercept

315/513

166/258

1.0(0.9–1.0)

NS

0.9

0

(19,20,25,28,31,32,33)

Infliximab

658/1091

194/386

1.2(1.1–1.3)

10(7–24)

0.03

0

 

Total

1408/2341

628/1162

1.9(0.9–1.2)

NS

8.6

41

Serious infections

Adalimumab

44/1922

14/947

1.2(0.6–2.8)

NS

5.8

31

(4188 vs.1937)

Etanercept

47/454

25/28

0.9(0.4–2.3)

NS

0

0

(19,20,22,23,24,25,28,29,30,31,32,33)

Infliximab

90/1812

19/726

1.8(0.9–3.4)

NS

2.7

26

 

Total

181/4188

58/1937

1.4(0.8–2.2)

NS

11.8

32

Infusión reactions

(761 vs. 308)

(20,22)

Infliximab

136/761

20/308

2.7(1.7–4.2)

9(7–14)

0.005

0

Injection-site reactions

Adalimumab

241/1380

88/690

1.7(1.0–3.0)

22(13–67)

12.6*

72

(2454 vs. 1245)

Etanercept

303/1074

32/555

5.1(2.9–8.8)

5(4–6)

2.3

0

(24,25,26,28,29,30,31,32)

Total

544/2454

120/1245

3.0(1.0–8.6)

8(7–10)

51.8*

86

Malignancies

Adalimumab

16/1922

5/947

1.1(0.4–2.7)

NS

1.6

0

(4826 vs. 2261)

Etanercept

15/1082

4/555

1.9(0.6–5.7)

NS

0.3

0

(19,20,22,23,24,25,26,28,29,30,31,32,33)

Infliximab

13/1822

1/759

2.6(0.6–11.6)

NS

1.1

0

 

Total

44/4826

10/2261

1.5(0.8–3.0)

NS

3.3

0

Mortality

Adalimumab

10/1922

3/947

1.3(0.4–4.7)

NS

2.0

0

(4826 vs. 2261)

Etanercept

4/1082

1/555

1.5(0.2–9.5)

NS

0.2

0

(19,20,22,23,24,25,26,28,29,30,31,32,33)

Infliximab

9/1822

5/759

0.5(0.2–1.4)

NS

0.4

0

 

Total

23/4826

9/2261

0.8(0.3–2.1)

NS

4.4

0

  1. RR (95%CI): relative risk (95% confidence limits)
  2. NNH: number needed to harm
  3. Q: Cochrane's Q
  4. I2: percentage of variability in study results attributable to between-study differences
  5. * statistical heterogeneity
  6. NS: non-significant results
  7. ** this figure include 208 patients of the Bathon trial not included in efficacy studies as efficacy date were not reported