Longitudinal Effects of a sit-stand desk intervention - persistence, Fade-Out, and psychological momentum: a Randomized Controlled Trial

Table 3 Coefficients of Residualized Change Regression Models for Velocity and Acceleration of Health Improvements Predicting Health at the Medium-term and Long-term

Predictors	Medium-term (6 months)			Long-term (24 months)
Predictors	β (PSD)	90% CI	p	β (PSD)	90% CI	p
Model 1 – Criterion: Intensity of MSC ^a
Velocity	1.76 (0.90)	0.515, 3.420	0.012	0.52 (0.96)	-1.162, 1.974	0.282
Acceleration	0.94 (0.87)	-0.237, 2.538	0.098	-0.36 (0.83)	-1.775, 0.955	0.310
Model 2 – Criterion: Prevalence of MSC ^a
Velocity	3.05 (1.30)	1.239, 5.464	0.004	1.90 (1.30)	-0.020, 4.185	0.052
Acceleration	2.67 (1.28)	0.859, 5.015	0.010	1.24 (1.33)	-0.711, 3.594	0.144
Model 3 – Criterion: Vigilance ^a
Velocity	0.89 (1.45)	-1.303, 3.333	0.206	2.15 (1.65)	0.342, 5.475	0.030
Acceleration	0.10 (1.50)	-3.103, 2.688	0.462	1.89 (1.69)	-0.055, 5.231	0.054
Model 4 – Criterion: Vitality ^a
Velocity	0.84 (1.60)	-1.822, 3.295	0.250	1.88 (1.86)	-0.904, 4.959	0.094
Acceleration	0.01 (1.57)	-2.536, 2.504	0.497	1.26 (1.81)	-1.437, 4.253	0.169

Note. N = 58. MSC = musculoskeletal complaints. β = standardized regression coefficient. PPP = Posterior Predictive P-value. PSD = Posterior Standard Deviation. CI = credibility interval. ^a Outcome controlled for its baseline value (T0). Coefficients in bold face indicate that the 90% CI does not contain the zero. Model fit: Model 1: PPP = 0.317, PPC CI = -21.56, 36.01, RMSEA = 0.02, CFI = 1.00, TLI = 1.00; Model 2: PPP = 0.185, PPC CI = -15.63, 42.00, RMSEA = 0.07, CFI = 0.98, TLI = 0.97; Model 3: PPP = 0.233, PPC CI = -17.20, 39.49, RMSEA = 0.05, CFI = 0.97, TLI = 0.97; Model 4: PPP = 0.183, PPC CI = -15.95, 40.83, RMSEA = 0.07, CFI = 0.95, TLI = 0.93.

ISSN: 2050-7283