Non-randomized studies should be considered for assessing surgical techniques in rectal prolapse: prospective cohort...

Area of Science:

• Colorectal surgery
• Clinical trial methodology

Background:

• Randomized controlled trials (RCTs) for rectal prolapse surgery are challenging to conduct.
• Non-randomized studies may offer an alternative, but confounding factors like baseline health status need evaluation.

Purpose of the Study:

• To assess if baseline health status confounds non-randomized comparisons of rectal prolapse surgical interventions.
• To evaluate the impact of waiting times on patient-reported health outcomes.

Main Methods:

• Prospective cohort study involving 203 patients across seven UK hospitals.
• Patients were categorized into short (≤18 weeks) and long (>18 weeks) waiting groups.
• Baseline comorbidity (Charlson Comorbidity Index) and health status (EQ-5D-5L) changes were analyzed against waiting time.

Main Results:

• Baseline comorbidity did not significantly predict waiting time for rectal prolapse surgery.
• A minimal association was found between weekly waiting time increases and slight improvements in EQ-5D-5L scores.
• Median Charlson Comorbidity Index was 2 for short waiters and 1 for long waiters.

Conclusions:

• The negligible impact of waiting time on patient health status and the lack of comorbidity influence support the use of non-randomized pre-/post-operative studies.
• Non-randomized designs are viable for comparing rectal prolapse surgical interventions, mitigating concerns about confounding baseline health status.