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Table 1 Main characteristics of RCTs included in the meta-analysis

From: Single administration of intra-articular bupivacaine in arthroscopic knee surgery: a systematic review and meta-analysis

Study (Year)

Country

Sample Size

No. of Pts (BG/PG)

Gender (M/F)

Age (yr)

Doses (mg)

Concentration (%)

Type of anaesthesia

Epinephrine

Surgery time (min)

Injection time

Tourniquet

Study design

OCEBM (R/C/B/F)

BG

PG

Aasbo (1996)

Norway

54

27/27

34/20

39

50

0.25

GA

No

32 ± 20

28 ± 12

8 min before RT

Yes

Double-blind

5 (1/1/2/1)

RCT

Alagol (2005)

Turkey

50

25/25

33/17

51.7

100

0.5

GA

No

83.8 ± 13.9

79.9 ± 10.6

15 min before RT

Yes

Double-blind

5(1/1/2/1)

RCT

Ates (1994)

Turkey

20

10/10

17/3

24.8

50

0.5

SA

No

NA

5 min before RT

Yes

Double-blind

5(1/1/2/1)

RCT

Bjornsson (1994)

Sweden

38

19/19

27/11

32

50

0.25

GA

No

27.3 ± 12

24.7 ± 10

5-10 min before RT

Yes

Double-blind

5(1/1/2/1)

RCT

Calmet (2004)

Spain

40

20/20

NA

NA

25

0.25

GA

No

NA

Before RT

Yes

Double-blind

5(1/1/2/1)

RCT

Campo (2012)

Netherlands

190

94/96

85/105

50.1

50

0.5

GA

No

17 (8–40)

16 (4–36)

Before RT

Yes

Double-blind

7(2/2/2/1)

RCT

Cepeda (1997)

U.K.

56

27/29

37/19

37.6

100

0.5

GA

Yes

51.5 ± 19.4

53.0 ± 19.8

5 min before RT

Yes

Double-blind

5(1/1/2/1)

RCT

Cook (1997)

Turkey

42

21/21

36/6

34.5

100

0.25

GA

No

NA

10 min before RT

Yes

Double-blind

7(2/2/2/1)

RCT

Datta (2004)

India

32

16/16

27/3

30

100

0.5

SA

No

72 ± 18

66 ± 6

Before RT

Yes

Double-blind

5(1/1/2/1)

RCT

De Andres (1998)

Spain

50

25/25

31/19

36.9

50

0.25

GA

No

50.2 ± 8.2

48.6 ± 12.4

10 min before RT

Yes

Double-blind

5(1/1/2/1)

RCT

Eroglu (2010)

Turkey

39

19/20

24/15

38.0

50

0.5

SA

No

59 ± 12

52 ± 16

10 min before RT

Yes

RCT

5(2/2/0/1)

Geutjens (1994)

U.K.

44

23/21

NA

NA

50

0.5

GA

No

NA

5 min before RT

Yes

Double-blind

4(1/0/2/1)

RCT

Haynes (1994)

U.K.

20

10/10

NA

NA

100

0.25

GA

Yes

NA

Before RT

Yes

Double-blind

5(1/1/2/1)

RCT

Henderson (1990)

USA

100

51/49

56/44

29.5

75

0.25

GA

No

45 ± 19

52 ± 24

End of surgery

Yes

Double-blind

5(1/1/2/1)

RCT

Izdes (2003)

Turkey

60

30/30

35/25

39.7

62.5

0.25

GA

No

33 ± 9

33 ± 9

10 min before RT

Yes

Double-blind

5(1/1/2/1)

21 ± 3

21 ± 4

RCT

Marchal (2003)

Spain

33

17/16

30/3

33.0

62.5

0.25

GA

Yes

72.2 ± 52.9

67.5 ± 53.3

10 min before RT

Yes

Double-blind

5(1/1/2/1)

59.6 ± 26.8

61 ± 28.1

RCT

Marret (2005)

France

30

15/15

17/13

48.5

150

0.5

GA

No

32 ± 6

34 ± 6

5 min before RT

Yes

Double-blind

7(2/2/2/1)

RCT

Milligan (1988)

U.K.

39

24/15

NA

NA

50

0.25

GA

No

NA

End of surgery

NA

Double-blind

5(1/1/2/1)

100

0.5

RCT

Osborne (1993)

Australia

78

38/40

55/23

33.4

100

0.5

GA

No

39.7

39.2

End of surgery

NA

Double-blind

6(1/2/2/1)

80

40/40

60/20

34.3

100

0.5

GA

Yes

42.3

39.2

RCT

Raja (1992)

USA

31

15/16

NA

45

50

0.25

SA

Yes

90 ± 6

90 ± 6

Before RT

Yes

Double-blind

6(1/2/2/1)

RCT

Smith (1991)

USA

97

49/48

65/32

35.5

150

0.5

GA

No

53 ± 19

56 ± 16

End of surgery

Yes

Double-blind

7(2/2/2/1)

RCT

Toivonen (2002)

Finland

120

60/60

69/51

43.1

100

0.5

GA

Yes

26 ± 14

28 ± 10

End of surgery

NA

Double-blind

7(2/2/2/1)

RCT

Varrassi (1999)

Italy

24

12/12

15/9

39

50

0.25

GA

No

29 ± 8

34 ± 20

10 min before RT

Yes

Double-blind

6(1/2/2/1)

RCT

Elsharnouby (2008)

Egypt

54

27/27

48/6

NA

50

0.25

GA

No

40 ± 5

38 ± 5

10 min before RT

Yes

Double-blind

5(1/1/2/1)

RCT

Karamanlioglu (2005)

Turkey

41

21/20

20/21

40.0

100

0.5

GA

No

85.2 ± 27.3

88.5 ± 26.6

End of surgery

NA

Double-blind

5(1/1/2/1)

RCT

Tetzlaff (1999)

USA

20

10/10

NA

NA

150

0.25

GA

Yes

NA

Before RT

NA

RCT

4(1/0/2/1)

Shaw (1997)

U.K.

58

31/27

51/7

36.3

100

0.5

GA

No

40.0

33.0

5 min before RT

Yes

Double-blind

6(1/2/2/1)

RCT

Chan (1995)

Singapore

20

10/10

20/0

NA

50

0.25

GA

No

NA

5 min before RT

Yes

Double-blind

4(1/0/2/1)

RCT

  1. BG: Bupivacaine group; F: Female; GA: General anesthesia; M: male; mOCEBM: Modified presentation of the Oxford Centre for Evidence-Based Medicine levels of evidence; NA: Not available; PG: Placebo group; Pts: Patients; R/C/B/F: randomization/concealment of allocation/double-blinding/follow-up of patients; RCT: Randomized controlled trial; RT: Release of the tourniquet; SA: Spinal anesthesia.