Svenningsen 1985.

Methods	Randomisation by: method not stated.
Participants	One hospital, Trondheim, Norway. From October 1977 to January 1980 169 patients. Characteristics of participants: Mean age in each group 79 both fixations 83 arthroplasty (range 70 to 93) Male: 42 (24.9%) Loss to follow‐up: 7 (4.1%) Inclusions: displaced femoral neck fracture (Garden III‐IV), aged over 70 Exclusions: not reported
Interventions	1. Reduction and fixation with compression screw versus 2. McLaughlin nail plate versus 3. Bipolar hemiarthroplasty, Christiansen (lateral approach)
Outcomes	Follow‐up for 36 months. OUTCOMES COLLECTED BY TRIAL (a) Operative details: Duration of operation Number of blood transfusions (b) Complications related to type of operation: For both methods: re‐operations, superficial infection (c) Postoperative complications: Deep vein thrombosis Pulmonary embolism Pneumonia Cerebrovascular accident (d) Postoperative care outcomes: Mortality at 6, 12, 36 months Bed bound time (e) Anatomical restoration: none (f) Final outcome measures: Clinical results adapted from Love (pain and mobility) (g) Economic cost: none
Notes	Translation obtained for main points of article. Previous publication in Acta Orthop Scand 1984 reports better results in SHS group compared to nail‐plate in undisplaced and displaced fractures.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Not stated
Allocation concealment (selection bias)	Unclear risk	Not stated
Blinding (performance bias and detection bias) Were the assessors of pain and function at follow‐up blinded to the treatment allocation	High risk	No mention of blinding of assessors of pain and function