Fernandes 2010

Methods	Randomised controlled trial.
Participants	Inclusion criteria: aged 40‐80 years, with radiographically verified minimum joint space (< 4 mm for participants aged < 70 years and < 3 mm for participants aged > 70 years), and a Harris Hip Score 60‐95 points. Exclusion criteria: total hip replacement in the index joint, diagnosed with knee OA or had knee or lower back pain, rheumatoid arthritis, osteoporosis, cancer, cardiovascular disease, dysfunction in lower extremities due to accident or disease, were pregnant, could not participate in exercise, who could not communicate in Norwegian. Sample number: IG: 54; CG: 54. Country: Norway. Mean age: 58 years. Progress‐plus: 56% women; 78.2% > 12 years; 63.6% employed, 20% retired, 14.5%sick‐leave.
Interventions	Provider(s): physical therapist. Training: yes. Setting: healthcare site. Content: strength/resistance + participant education. Length/intensity: 2‐3 times a week for 12 weeks. Control: attention control: patient education.
Outcomes	At 16 months: pain (WOMAC); function (WOMAC); SF‐36: mental health; social function; emotional role, vitality.
Notes	Included participant education a 'Hip school' comprising of 3 group‐based sessions and 1 individual physical therapy visit, 2 months after completing the group sessions.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Randomised using computer‐generated, blocked schedule, administered through numbered, opaque, sealed envelopes.
Allocation concealment (selection bias)	Low risk	Opaque sealed envelopes.
Blinding of participants and personnel (performance bias) All outcomes	High risk	Unlikely that participants or providers were blind to treatment allocation.
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Assessors blinded to group allocation throughout trial and analysis period.
Incomplete outcome data (attrition bias) All outcomes	Low risk	IG=23.6% attrition (13/55) CG=33% attrition (18/54) Lost to follow‐up: IG: 6 'total hip replacement' surgery; 7 did not respond; CG: 1 'total hip replacement' surgery; 7 did not respond. ITT analysis.
Selective reporting (reporting bias)	Low risk	All outcomes reported.
Other bias	Low risk	No other bias detected.