Table 1

Trial outcome variables, analysis metric, aggregation method and time points

			Time point
Outcome variable	Analysis metric	Aggregation	Baseline	Day 1 postoperative	Day 2 postoperative	Week 6 postoperative	Month 12 postoperative
VAS (0–100 mm)	Final value	Mean		× (before and after physiotherapy)	× (before and after physiotherapy)
4-point pain scale	Final value	Proportion and type		×	×
Total use of opiate analgesia (mg)	Final value	Mean		×	×
Straight leg raise (yes/no)	Final value	Proportion		×	×
Knee ROM (degrees)	Final value	Mean		×	×
Timed Up and Go (impaired mobility yes/no)	Final value	Proportion		×	×
Bed transfers (4-point ordinal scale)	Final value	Proportion and type		×	×
Distance mobilised (metres)	Final value	Mean		×	×
OKS	Final value	Mean	×			×	×
EQ-5D-5L	Final value	Mean	×			×	×
DN2 (7-item DN4 ordinal scale)	Final value	Proportion	×			×	×
Adverse events	Final value	Proportion and type		×	×	×	×

DN, Douleur Neuropathic Pain Score; EQ-5D-5L, EuroQol; OKS, Oxford Knee Score; ROM, range of motion; VAS, visual analogue scale.