Table 2.

Between and within group comparisons of mean total daily sedentary time, adjusted for age

	Comparison	Sample Sizes		Mean Difference ± SD [(1 − α)% CI] (Hours)	Cohen’s D Effect Size	p value
		N1	N2
Between Group Comparisons	B: Sit-to-stand desk - Control	23	21	0.27 ± 2.79 [−2.05, 2.60]	0.10	0.7462
	B: Treadmill desk - Control	22	21	0.54 ± 2.86 [−1.88, 2.96]	0.19	0.5394
	B: Treadmill desk - Sit-to-stand desk	22	23	0.27 ± 2.77 [−2.01, 2.55]	0.10	0.7470
	M3: Sit-to-stand desk - Control	21	15	−0.79 ± 3.04 [−3.66, 2.09]	0.26	0.4488
	M3: Treadmill desk - Control	22	15	−1.01 ± 3.41 [−4.20, 2.19]	0.29	0.3796
	M3: Treadmill desk - Sit-to-stand desk	22	21	−0.22 ± 3.17 [−2.90, 2.46]	0.07	0.8201
	M6: Sit-to-stand desk - Control	20	14	−1.60 ± 3.06 [−4.60, 1.40]	0.52	0.1352
	M6: Treadmill desk - Control	19	14	−0.78 ± 3.60 [−4.34, 2.79]	0.22	0.5319
	M6: Treadmill desk - Sit-to-stand desk	19	20	0.82 ± 3.54 [−2.33, 3.98]	0.23	0.4672
	M12: Sit-to-stand desk - Control	20	18	−1.10 ± 2.84 [−3.67, 1.47]	0.39	0.2331
	M12: Treadmill desk - Control	20	18	−0.83 ± 2.92 [−3.47, 1.82]	0.28	0.3823
	M12: Treadmill desk - Sit-to-stand desk	20	20	0.27 ± 2.96 [−2.33, 2.88]	0.09	0.7712
Within Group Comparisons	Control: Δ B to M3	21	15	0.22 ± 3.09 [−2.87, 3.31]	0.07	0.8001
	Control: Δ B to M6	21	14	1.19 ± 3.01 [−1.88, 4.27]	0.40	0.1860
	Control: Δ B to M12	21	18	0.99 ± 2.84 [−1.69, 3.67]	0.35	0.1709
	Control: Δ M3 to M6	15	14	0.97 ± 3.21 [−2.62, 4.56]	0.30	0.3552
	Control: Δ M3 to M12	15	18	0.77 ± 3.05 [−2.40, 3.95]	0.25	0.3830
	Control: Δ M6 to M12	14	18	−0.20 ± 2.97 [−3.35, 2.96]	0.07	0.8281
	Sit-to-stand desk: Δ B to M3	23	21	−0.84 ± 2.73 [−3.24, 1.57]	0.31	0.2016
	Sit-to-stand desk: Δ B to M6	23	20	−0.68 ± 2.85 [−3.23, 1.86]	0.24	0.3436
	Sit-to-stand desk: Δ B to M12	23	20	−0.38 ± 2.79 [−2.87, 2.12]	0.13	0.5885
	Sit-to-stand desk: Δ M3 to M6	21	20	0.16 ± 2.88 [−2.48, 2.80]	0.05	0.8325
	Sit-to-stand desk: Δ M3 to M12	21	20	0.46 ± 2.82 [−2.13, 3.05]	0.16	0.5201
	Sit-to-stand desk: Δ M6 to M12	20	20	0.30 ± 2.94 [−2.43, 3.03]	0.10	0.6956
	Treadmill desk: Δ B to M3	22	22	−1.32 ± 3.21 [−4.15, 1.50]	0.41	0.0742
	Treadmill desk: Δ B to M6	22	19	−0.12 ± 3.48 [−3.32, 3.07]	0.04	0.8929
	Treadmill desk: Δ B to M12	22	20	−0.37 ± 2.94 [−3.03, 2.29]	0.13	0.5902
	Treadmill desk: Δ M3 to M6	22	19	1.20 ± 3.78 [−2.27, 4.67]	0.32	0.2320
	Treadmill desk: Δ M3 to M12	22	20	0.95 ± 3.30 [−2.03, 3.93]	0.29	0.2365
	Treadmill desk: Δ M6 to M12	19	20	−0.25 ± 3.56 [−3.60, 3.11]	0.07	0.7985

Key: B= Baseline, M3= Month-3, M6= Month-6, M12= Month-12 follow-ups, N1= sample size of 1st comparison group, N2= sample size of 2nd comparison group

Bonferroni adjusted rejection α’s: between-group comparisons= 0.0042, within-group comparisons= 0.0028