Table 3.
Final list of generalizability items
| Generalizability item | Modea | NMode of NTotal (%)b | Preference for mode valuec | |
|---|---|---|---|---|
| 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 NMode = the number of experts who chose the mode value
NTotal = 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.