Sandy 2016

Methods	Random allocation Single‐blind Study duration: 14 weeks Dropouts: 14% Location: Australia Recruitment: participants were recruited via an email
Participants	Population: employees of Lockheed Martin Mission System and Training business unit: primarily develops software solutions and training/simulation technologies for both civil and commercial markets. 2500 full‐time employees of whom 90% in sedentary computer work for a large percentage of their workday Intervention group: ergonomic training (16 participants), adjustable desks (23 participants), training and desks (20 participants) Control group: 13 participants Demographics: mean age in years: 37.2 (SD 9.4) BMI: 26.9 (SD 4.4) kg/m2
Interventions	Duration of intervention: 14 weeks Intervention: Training vs. adjustable desks vs. training and desks Control: no intervention
Outcomes	Outcome name, measurement time/tool (units of measurement) Changes in sitting/standing/walking time (minutes/9‐hour workday) assessed by self report at week 1, 2, 3, 4, 6, 10, 14 Discomfort level, musculoskeletal pain, fatigue
Notes	No conflict of interest reported
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Participants were listed out in Excel and randomly placed into one of the four groups.
Allocation concealment (selection bias)	Unclear risk	Not reported
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Not reported
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Not reported
Incomplete outcome data (attrition bias) All outcomes	Low risk	< 10% attrition rate
Selective reporting (reporting bias)	Low risk	No protocol; all the outcomes mentioned in the methods section are reported.
Baseline comparability/ imbalance	Unclear risk	Baseline characteristics of participants not reported
Validity of outcome measure	High risk	Only mentioned self report. No information on validity of questionnaires used.