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Table 1 Characteristic of the included studies

From: Comparison of unilateral and bilateral percutaneous vertebroplasty for osteoporotic vertebral compression fractures: a systematic review and meta-analysis

Author

Year of publication

Year of onset

Mean age

Sample size (unilateral/bilateral)

Sex distribution (male/female)

Outcome measurements

Follow-up time

Chen CM [25]

2014

–

Unilateral group, 69.43 ± 6.25; bilateral group, 68.66 ± 8.76

39 (20/19)

–/–

VAS, ODI, surgery time, Cement leakage, injected cement volume

2 years

Feng Y [26]

2014

February 2010 to February 2012

Unilateral group, 72.5; bilateral group, 69.4

117 (61/56)

30/87

VAS, ODI, injected cement volume

2 years

Guo ZP [27]

2015

March 2008 to March 2014

Unilateral group, 67.32 ± 11.24; bilateral group, 69.35 ± 12.46

153 (91/62)

29/124

VAS, ODI, surgery time, Injected cement volume, cement leakage

–

Li J [28]

2015

April 2007 to February 2014

Unilateral group, 67.9; bilateral group, 65.7

65 (36/29)

30/35

VAS, surgery time, injected cement volume, cement leakage

6 to 18 months

Ren HL [29]

2014

January 2009 to January 2012

Unilateral group, 69.4 ± 10.4; bilateral group, 69.7±9.7

101 (45/56)

17/84

Surgery time, injected cement volume, cement leakage

More than 1 year

Wang W [30]

2013

February 2009 to February 2011

Unilateral group, 66.9; bilateral group, 68.7

47 (25/22)

18/29

VAS, cement leakage

1 year

Xiao L [31]

2015

September 2012 to December 2014

Unilateral group, 70.9 ± 9.3; bilateral group, 68.5±7.3

71 (40/31)

–/–

VAS, injected cement volume, cement leakage

3 days

Yuan WQ [32]

2014

June 2013 to June 2014

70.36 ± 0.35

72 (36/36)

33/39

Surgery time, injected cement volume

2 days

Zhai HL

[33]

2013

January 2010 to February 2012

Unilateral group, 70.5; bilateral group, 74.3

48 (27/21)

6/42

VAS, surgery time, injected cement volume

1 day

Zhang L [34]

2015

November 2010 to October 2012

Unilateral group, 71.7 ± 7.5; bilateral group, 72.1 ± 6.0

50 (24/26)

13/37

VAS, ODI, PCS, MCS, surgery time, cement leakage, injected cement volume

2 years

Zhang LG [35]

2015

January 2008 to December 2011

Unilateral group, 70.0 ± 2.9; bilateral group, 70.7 ± 2.5

68 (36/32)

0/68

VAS, QUALEFFO, cement, cement leakage

1 year

Zhang X [36]

2014

March 2012 to August 2013

70 ± 0.27

53 (28/25)

25/28

Surgery time, injected cement volume

–

Zhao XQ [37]

2014

May 2011 to February 2013

Unilateral group, 74; bilateral group, 73

80 (40/40)

48/32

Curative effect, surgery time, injected cement volume

2 days

Zhou R [38]

2015

February 2011 to January 2013

Unilateral group, 68.8 ± 5.1; bilateral group, 70.6 ± 4.8

79 (41/38)

46/33

VAS, surgery time, injected cement volume, cement leakage

1 year