Imaging modalities for the detection of posterior compartment disorders in women with obstructed defaecation syndrome

To determine the diagnostic accuracy of MRI, ultrasound and EP (reference standard), for the detection of posterior compartment disorders in patients with ODS, with a view to make recommendations regarding the ideal investigation for ODS.

1 To estimate test accuracy for each test at pre-specified thresholds

2 To investigate sources of heterogeneity (subgroup analysis)

This is a protocol.

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