Kamwendo 1991.

Methods	RCT
Participants	Medical secretaries currently working. Chronic (> 12 months) neck/shoulder complaints (non‐specific); medical secretaries currently working (women); n = 79
Interventions	Traditional neck school: Four‐hour traditional neck school conducted by a physiotherapist. Advice + exercises; n = 25 Traditional neck school + ergonomic changes: Four‐hour traditional neck school conducted by a physiotherapist and additional visit of the physiotherapist at the workplace; n = 28 Controls: not offered any intervention; n = 26   Two sessions/wk, four weeks. Follow‐up: six months
Outcomes	Pain (VAS), workload (VAS), fatigue (VAS), ROM (goniometer), sick leave, expectation
Notes	No data available
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Unclear randomisation procedure
Allocation concealment (selection bias)	Unclear risk	Unclear whether allocation was concealed
Blinding of participants?	Unclear risk	Unclear blinding of participants
Blinding of caregivers?	Unclear risk	Unclear blinding of caregivers
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Unclear blinding of outcome assessment
Incomplete outcome data (attrition bias) All outcomes ‐ <20% drop‐outs?	Low risk	Dropout rate < 20%
Incomplete outcome data (attrition bias) All outcomes ‐ ITT analysis performed?	High risk	No ITT analysis
Selective reporting (reporting bias)	Unclear risk	No protocol
Similarity of baseline characteristics?	Unclear risk	Unclear baseline similarity
Co‐interventions avoided?	Unclear risk	Unclear whether co‐interventions were avoided
Compliance acceptable ?	Unclear risk	Unclear compliance rate
Timing outcome assessment comparable?	Unclear risk	Timing comparable