AQUILA: assessment of quality in lower limb arthroplasty. An expert Delphi consensus for total knee and total hip arthroplasty

Table 3 Final list of generalizability items

Generalizability item		Mode^a	N_Mode of N_Total (%)^b	Preference for mode value^c
Patient demographics
Age		5 years	22 of 31 (71)	M
Gender		10%	20 of 30 (67)	M
Diagnosis		10%	17 of 31(55)	L
BMI		5 points	16 of 29 (55)	L
Component positioning
TKA	Hip Knee Angle	5 degrees	13 of 24 (54)	L
	Varus/valgus tibial component	3 degrees	17 of 25 (68)	M
	Slope of tibial component	3 degrees	15 of 24 (63)	L
THA	Inclination of acetabular cup	10 degrees	19 of 28 (68)	M
	Varus/valgus femoral stem	5 degrees	16 of 27 (60)	L
Post-operative functioning
TKA	Knee Society Score	10 points	18 of 23 (78)	M
	Knee Society Function Score	10 points	20 of 24 (83)	H
	Range of Motion	10 degrees	18 of 24 (75)	M
	KOOS	10 points	11 of 17 (65)	L
	WOMAC Knee	10 points	11 of 19 (58)	L
	Oxford Knee Score	5 points	18 of 24 (82)	H
THA	Harris Hip Score	10 points	17 of 21 (81)	H
	HOOS	10 points	12 of 17 (71)	M
	WOMAC Hip	10 points	12 of 20 (60)	M
	Oxford Hip Score	5 points	16 of 22 (73)	M
Regional influences
Are the studies from the same region (developing country or western countries//continents)?
Are the studies similar in type en experience of the surgeon (academic; high volume; consultant; trainee)?
Are two studies similar regarding hospital type (developer hospital/special institute/regular hospital)?

^A Mode: the value that was chosen most frequently (e.g. 5 years)
^b N_Mode = the number of experts who chose the mode value
N_Total = the total number of experts who considered the generalizability item relevant
^c H = High preference, 80% or more of the experts chose the mode value
M = Moderate preference, between 67% and 80% of experts chose the mode value
L = Low preference, less than 67% of experts chose the mode value
Example: the preference for the mode value "5 years" is moderate.

ISSN: 1471-2474