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. 2021 Sep 28;2021(9):CD009790. doi: 10.1002/14651858.CD009790.pub2

Frost 2004.

Study characteristics
Methods Study design: RCT
Setting: England, healthcare
Exercise groups: 1
Comparison groups: 1
Participants Number of participants: 286 (E1 = 144, C1 = 142)
Chronic LBP duration: Not specified (not specified)
Neurological/radicular symptoms: Some participants
Mean age (years): 41
Sex (female): 53%
Interventions Exercise Group 1 (E1): Stretching, strengthening, and mobility exercises; type = mixed; duration = 8 weeks; dose = low; design = individualised; delivery = individual; additional intervention = advice/education & other & physiotherapy
Comparison Group 1 (C1): Other conservative treatment (education)
Outcomes Core outcomes reported: Function (Oswestry Disability Index); HRQoL (36‐Item Short Form Survey); Global Perceived Health or Recovery (Global Perceived Health or Recovery (overall perceived benefit from treatment))
Follow‐up time periods available for syntheses: 8 weeks (short); 24 weeks (moderate); 52 weeks (long)
Notes Conflicts of interest: None to declare
Funding source: Arthritis Research Campaign
Other: None
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Low risk Support for judgement is not available
Allocation concealment (selection bias) Low risk Support for judgement is not available
Blinding of participants and personnel (performance bias)
All outcomes High risk Support for judgement is not available
Blinding of care provider (performance bias) High risk Support for judgement is not available
Blinding of outcome assessment (detection bias)
All outcomes High risk Support for judgement is not available
Incomplete outcome data (attrition bias)
All outcomes High risk Support for judgement is not available
Participants analysed in group allocated (attrition bias) Low risk Support for judgement is not available
Selective reporting (reporting bias) Unclear risk Support for judgement is not available
Groups similar at baseline (selection bias) Low risk Support for judgement is not available
Co‐interventions avoided or similar (performance bias) Unclear risk Support for judgement is not available
Compliance acceptable in all groups (performance bias) Low risk Support for judgement is not available
Timing of outcome assessment similar in all groups (detection bias) Low risk Support for judgement is not available