Open Access

Table IV

The accuracy of difficulty indexes/operative difficulty.

Difficulty index/operative difficulty by duration Number of cases (%) P value

Accurate Inaccurate
Pernambuco 46 (55.4%) 37 (44.6%) 0.0192 [S]*
Pederson 30 (36.1%) 53 (63.9%)
Difficulty index/operative difficulty by technique      
Pernambuco 31 (37.3%) 52 (62.7%) 0.0406 [S]*
Pederson 18 (21.7%) 65 (78.3%)

*Fisher's exact test, [S] Significant.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.