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Table 1 The characteristics of included RCTs

From: Single versus double chest drains after pulmonary lobectomy: a systematic review and meta-analysis

Study

Country

Sample size

Gender (male/female)

Age

Follow-up period

The type of surgery

SCD

DCD

SCD

DCD

SCD

DCD

Alex et al. [9]

UK

60

60

48/12

48/12

65 ± 8.4

66 ± 8.6

Those patients with chest drains were assessed every hour for the first 24 h and then every 6 h until removal.

Lobectomy

Gomez-Caro et al. [10]

Spain

60

59

9/51

7/52

65.5 ± 9.4

61.5 ± 9.5

30 days

Upper and lower lobe resection

Han et al. [11]

China

46

47

39/7

32/15

58.4 ± 9.5

58.2 ± 9.0

Not available

Lobectomy

Hu et al. [19]

China

62

53

32/30

27/26

61.3

60.1

Not available

Left and right upper lobe resection plus lymph node dissection

Li et al. [20]

China

21

22

12/9

13/9

56.5 ± 9.5

57.2 ± 9.0

Until discharge

Upper lobe resection

Okur et al. [21]

Turkey

50

50

37/13

43/7

54.74 ± 14.34

56.34 ± 11.52

Until discharge

Lobectomy

Pan et al. [22]

China

48

48

26/22

28/20

56.37 ± 6.28

52.18 ± 5.63

30 days

Upper lobe resection

Pawelczyk et al. [23]

Poland

90

93

64/26

54/39

60.9 ± 9.03

60.7 ± 8.906

Not available

Upper and lower lobe resection

Tanaka et al. [24]

Japan

54

54

38/16

32/22

66.8 ± 7.5

67.7 ± 8.0

Not available

Upper and lower lobe resection

Wang et al. [25]

China

38

79

19/19

45/34

63.98 ± 9.76

65.77 ± 8.58

Until discharge

Upper lobe resection

Zhou and Yu [26]

China

60

60

41/19

39/21

50.83 ± 15.23

52.55 ± 13.23

Until discharge

Lobectomy