Review for 10.1186/s12876-021-01969-1 (2021)

Reviewer’s report
Title: 
Surgical Outcomes of LigaSure Hemorrhoidectomy in the Elderly
Population: A retrospective cohort study
Version: 
0 
Date: 
24 Mar 2021
Reviewer's report:
I would like to thank the authors for this manuscript which highlight a common
challenging condition, surgical treatment of hemorrhoids. I have certain
comments which could enrich the manuscript. 
Introduction; 
Q1; better to be reduced 
Methods;
Q2; why the authors assumed to outcomes will be different according to age?
Q3; why the authors choose 65 years as cutoff value? any available statistics
about elder population at Taiwan? 
Q4; the methods missing outcomes section; which need to be categorized into
primary and secondary? why the authors did not include recurrence among items
to be comapred?
Q5; inclusion criteria should clarify whether they included recurrent cases or not
Q6; why they conducted preoperative preparation in elder patients with focus on
colonoscopy was a routine? 
Q7; regarding surgical technique, they put a ligature on the pedicle? they closed
the wound?
Results
Q8; how long was the follow-up?
Kind regards 
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