“…Large studies from registers can help us to find small differences in complications and patient-reported outcome thereby generating hypotheses for clinical studies. As an example, the above-mentioned question of CRIF versus ORIF seems very challenging to answer within the frames Tables Table 1 Non-elderly hip [51], [55] *Womac, 24 items, total 0-96 score § Pain, stiffness, physical function *1 study ‡ EQ-5D index, 5 items, (3L or 5L answer levels) converted into an index score of 0-1.0 # Mobility, self-care, usual activities, pain/discomfort and anxiety/depression ‡ Pre-fracture and 4 to 24 months [58], [51], [55] ‡ EQ-5D VAS, 0-100 score # From worst to best imaginable health state ‡ 4 to ≥ 12 months [58], [51] Patient satisfaction: ‡ VAS, 0-100 score § From very satisfied to very unsatisfied ‡ 4 to 12 months [58] Our recommendations for a minimum core outcome data set: Level of; return to work, sporting/leisure activities, other activities of daily living, hip-fracture related pain, limping; EQ-5D-3L, EQ-5D-VAS, and objectively assessed functional performance, e.g. evaluated by the Timed Up & Go or 10-meter gait speed test.…”