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Table 4 12-month mean changes in activity outcomes, and differences between interventions, adjusting for confounders

From: Evaluating the effectiveness of organisational-level strategies with or without an activity tracker to reduce office workers’ sitting time: a cluster-randomised trial

  Group ORG (n = 87)a Group ORG + Tracker (n = 66)a Between group differencea b(Group ORG + Tracker vs. Group ORG)
Outcome Adjusted mean change (95 % CI) Adjusted mean change (95 % CI) Adjusted mean difference (95 % CI)
Work hours
 Sitting, min/10 h −40.5 min (-60.9, −20.0), p< 0.001 −35.5 min (-60.9, −10.2), p= 0.006 +4.4 min (−33.1, 41.9), p = 0.818
 Prolonged sitting, min/10 h −41.3 min (−67.9, −14.8), p= 0.002 −45.7 min (−84.0, −7.4), p= 0.019 −1.4 min (−51.2, 48.3), p = 0.955
 Time between sitting bouts +1.7 min (0.3, 3.1), p= 0.019 +1.5 min (−0.4, 3.3), p = 0.114 +0.3 min (−3.0, 3.6), p = 0.855
 Standing, min/10 h +39.2 min (20.9, 57.5), p< 0.001 +27.4 min (7.7, 47.1), p= 0.007 −12.4 min (−44.6, 19.8), p = 0.449
 Stepping, min/10 h +2.4 min (−3.0, 7.9), p = 0.375 +9.1 min (0.2, 17.9), p= 0.045 +7.7 min (−3.8, 19.2), p = 0.189
 Number of steps/10 h +123.2 steps (−135.9, 382.4), p = 0.350 +433.8 steps (−16.5, 884.1), p = 0.059 +369.6 steps (−227.3, 966.4), p = 0.224
Overall hours
 Sitting, min/16 h −32.1 min (−57.2, −7.0), p= 0.012 −35.0 min (−65.6, −4.3), p= 0.025 −8.4 min (−57.0, 40.3), p = 0.735
 Prolonged sitting, min/16 h −30.0 min (−56.5, −3.6), p= 0.026 −23.6 min (−54.2, 7.0), p = 0.131 +8.0 min (−37.9, 53.9), p = 0.732
 Time between sitting bouts +1.1 min (−0.2, 2.4), p = 0.097 +1.5 min (−0.4, 3.5), p = 0.116 +0.9 min (−1.4, 3.2), p = 0.435
 Standing, min/16 h +33.5 min (13.8, 53.3), p= 0.001 +26.9 min (1.1, 52.6), p= 0.041 −5.1 min (−44.2, 34.0), p = 0.797
 Stepping, min/16 h −4.5 min (−13.5, 4.5), p = 0.328 +10.0 min (−1.7, 21.7), p = 0.095 +20.6 min (3.1, 38.1), p= 0.021
 Number of steps/16 h −157.8 steps (−584.3, 268.7), p = 0.468 +440.8 steps (−119.3, 1000.9), p = 0.123 +846.5 steps (67.8, 1625.2), p= 0.033
  1. Significant changes or differences (p < 0.05) are in bold
  2. aMissing data imputed by chained equations (m = 70 imputations)
  3. bModels adjust for baseline values of the outcome and confounders (see Additional file 5)