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Table 3 Adjusted estimates of change in outcomes for control and intervention conditions for Stand@Work a

From: The effectiveness of sit-stand workstations for changing office workers’ sitting time: results from the Stand@Work randomized controlled trial pilot

Outcome (minutes per day) Control (Assessment 2 minus 1)b Intervention (Assessment 3 minus 2)c Control vs. Interventiond
  Estimate (95% CI) p-value Estimate (95% CI) p-value p-value
Time at work spent (ActivPAL)e        
Sitting 10 (-24, 43) 0.565 -73 (-106, -39) <0.001 0.004
Standing 4 (-14, 21) 0.678 65 (47, 83) <0.001 <0.001
Stepping 3 (-9, 16) 0.596 11 (-1, 24) 0.081 0.453
Time at work spent (OSPAQ)        
Sitting -14 (-66, 37) 0.576 -91 (-142, -40) 0.001 0.075
Standing 11 (-15, 36) 0.401 99 (74, 125) <0.001 <0.001
Walking 2 (-15, 19) 0.823 13 (-4, 30) 0.127 0.433
In heavy labour at work 3 (-2, 7) 0.211 0 (-4, 5) 0.927 0.454
Time spent sitting over a whole workday (WSQ)        
Transport 14 (-5, 34) 0.138 2 (-17, 21) 0.826 0.424
At work -37 (-86, 11) 0.130 -74 (-123, -25) 0.004 0.365
Watching TV 30 (6, 55) 0.016 -26 (-51, -2) 0.038 0.007
Using computer at home -3 (-22, 16) 0.788 14 (-5, 34) 0.141 0.256
Other leisure activities -2 (-34, 29) 0.875 5 (-26, 37) 0.731 0.763
Total sitting time 5 (-70, 80) 0.895 -80 (-155, -4) 0.040 0.179
Time spent sitting over a whole non-workday (WSQ)        
Transport 11 (-16, 38) 0.437 7 (-20, 34) 0.604 0.876
At work -3 (-42, 37) 0.891 -5 (-45, 35) 0.807 0.948
Watching TV 32 (-7, 71) 0.102 -46 (-86, -7) 0.021 0.019
Using computer at home -20 (-54, 14) 0.247 -6 (-41, 28) 0.716 0.621
Other leisure activities -43 (-109, 24) 0.203 11 (-56, 77) 0.746 0.338
Total sitting time -29 (-130, 72) 0.567 -40 (-142, 61) 0.432 0.895
  1. aEstimates adjusted for measurement time, study group, sex, age, BMI, office type, education level, and full time or part time work.
  2. bThe control analyses tested the difference between assessments 1 and 2 (assessment 2 minus assessment 1).
  3. cThe intervention analyses tested the difference between assessments 2 and 3 (assessment 3 minus assessment 2).
  4. dAn F test was used to compare estimates between control and intervention conditions for each outcome.
  5. eActivPAL analyses involved participants with at least 75% wear time at work, and who worked full time with at least 2 days of wear time at work or worked part time with at least 1 day of wear time at work.