Table 3 Secondary comparisons. Comparisons of studies at two time periods that met the criteria detailed in the secondary comparison (see text).

Mor (%)

Total Pt (N)

References

Mor (%)

Total Pt (N)

References

Pain

Acute (≤ 9 m)

22.41%

174

8,11,13

47.28%*

161*

6

< 0.0001

Chronic (> 9 m)

13.81%

1347

2,4,9,10,11,14,20

28.67%

143

6

< 0.0001

Numbness/Paresthesia

Acute (≤ 9 m)

5.50%

109

11,15

35.58%*

160*

6

< 0.0001

Chronic (> 9 m)

12.48%

601

4,9,11,13,14,20

23.14%

229

3,6,18

0.0002