Table 6.

Overview of Studies included in Scoping review.

Author	Service	Study type	Duration (days)	No. of subjects (n)
Vlastos et al.	Aortic valve surgery	PR	90	227
Bonalumi et al.	Cardio vascular surgery	P	42	41
Wickramarachchi et al.	Trauma & Hip fracture	P	60	138
Picardo et al.	Hand surgery	P	70	385
Chiesa et al.	Vascular surgery	P	70	135
Collins et al.	Urology	PR	60	159
Lim et al.	Trauma & Hip fracture	PR	31	185
Ramsingh et al.	Cardiac surgery	P	67	58
Kasivisvanathan et al.	Urological, Thoracic, Gynaecological & General Surgery	P	48	500
Iqbal et al.	Cancer surgery	R	60	153
Rajasekaran et al.	Sarcoma	P	61	56
Chui et al.	Hip fracture	PR	30	47
Kathryn et al.	Trauma surgery	PR	76	400
Chang et al.	Elective Orthopaedic surgery	P	25	121
Bhangu et al.	Cancer surgery	P	111	2481
Stroman et al.	Elective Urological	R	92	495
Ally et al.	Elective ENT surgery	R	112	85
Dayananda et al.	Trauma service & NOF	PR	28	130
Kuusk et al.	Kidney Cancer	R	197	130
Digne-Malcolm et al.	General Surgery, Urology	PR	120	881
Hanna et al.	Colorectal cancer surgery	R	180	24
Ghosh et al.	Colorectal cancer surgery	P	183	166
Hamid et al.	Colorectal cancer surgery	R	120	233
D'Angelo et al.	Trauma & Hip fracture	PR	68	134

P – Prospective, R – Retrospective, PR – Prospective with Retrospective cohort.