Table 8.

Comparison of EWL before and after surgery between the current work and some other papers from literature.

Studies	Number of patients	After 3 months	After 6 months	After 12 months
Paul Brunault et al. [30]	29	35.7 ± 14.3%	–	43.8 ± 17.8%
Andrzej Lehmann et al. [31]	202	30.1%	−34.6%	47.5%
Martin DJ et al. [33]	292	−49%	64%	76%
Current paper	40	31–35.5%	41.4–48.9%	44.9–53.5%

Note: the sample of the participants is smaller than (Andrzej Lehmann et al., Martin DJ et al.), but it is larger than (Paul Brunault et al.). The result of the current work three months after the operations is close to (Andrzej Lehmann et al. and Paul Brunault et al.) but higher than (Martin DJ et al.). While it is close to 2/3 of the EWL in (Martin DJ et al.)’s work 6 and 12 months after the operations, and comparable to (Andrzej Lehmann et al.) one year after the operations.