CRP	C-reactive protein
CRC	Colorectal cancer
BMI	Body mass index
WHO	World Health Organization
APER	Abdominoperineal excision of the rectum
TME	Total mesorectal excision
AR	Anterior resection
STEMI	ST elevation myocardial infarction
SSI	Surgical site infections
UTI	Urinary tract infections
AUR	Acute urine retention
EBL	Estimated blood loss
ASA	American Society of Anesthesiologists
CCI	Charlson Comorbidity Index
HBP	High blood pressure
CAR	CRP/albumin ratio
FAR	Fibrinogen/albumin ratio
CPR	CRP/platelet ratio
CLR	CRP/lymphocyte ratio
CNR	CRP/neutrophil ratio
CMR	CRP/monocyte ratio
RR	Risk ratio
POD	Postoperative day
SD	Standard deviation
WBC	White blood cell
CEA	Carcinoembryonic antigen
CA 19-9	Carbohydrate antigen 19-9