Table 4 Candidate prognostic factors excluded from both model development and prognostic factor exploration
Type of prognostic factor | Candidate prognostic factor | Composite PF | Measurement unit | Measurement method | Data type | Reason for elimination |
|---|---|---|---|---|---|---|
Anthropometric | Body fat | No | Percentage | Skin callipers | Continuous | Missing data > 15% |
Musculoskeletal | Quadriceps muscle length difference* | Yes | Degrees | Goniometer - Ely's test | Continuous | Intra-rater ICC = 0.69 [43] Inter-rater ICC = 0.66 [43] |
Mean quadriceps muscle length** | Yes | Degrees | Goniometer - Ely's test | Continuous | Intra-rater ICC = 0.69 [43] Inter-rater ICC = 0.66 [43] | |
Toe touch in standing | No | Centimetres | Fingertip to floor distance | Continuous | Missing data > 15% | |
Sacroiliac joint kinematic function | No | Subjective score | Gillet’s test | Categorical | Missing data > 15% | |
Functional movement/balance | Y Balance Test—anterior translation difference* | Yes | Centimetres | Y Balance Test | Continuous | Missing data > 15% |
Y Balance Test—mean anterior translation** | Yes | Centimetres | Y Balance Test | Continuous | Missing data > 15% | |
Y Balance Test—posteromedial translation difference* | Yes | Centimetres | Y Balance Test | Continuous | Missing data > 15% | |
Y Balance Test—Mean posteromedial translation** | Yes | Centimetres | Y Balance Test | Continuous | Missing data > 15% | |
Y Balance Test—posterolateral translation difference* | Yes | Centimetres | Y Balance Test | Continuous | Missing data > 15% | |
Y Balance Test—mean posterolateral translation** | Yes | Centimetres | Y Balance Test | Continuous | Missing data > 15% | |
R relative tibial angles | No | Degrees | SLS measured with Dorsavi Viperform IMU | Continuous | Within-session ICCs = 0.27–0.75 Between-session ICCs = 0.55–0.77 [44] | |
L relative tibial angles | No | Degrees | SLS measured with Dorsavi Viperform IMU | Continuous | Within-session ICCs = 0.27–0.75 Between-session ICCs = 0.55–0.77 [44] | |
Strength/power | Upper body peak power difference* | Yes | Normalised watts per kilo (W/kg−0.67) | Double horizontal press using a Keiser Chest Press Air 350 machine | Continuous | Missing data > 15% |
Mean upper body peak power** | Yes | Normalised watts per kilo (W/kg−0.67) | Double horizontal press using a Keiser Chest Press Air 350 machine | Continuous | Missing data > 15% |