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. 2021 Dec 7;23(12):e29167. doi: 10.2196/29167

Table 2.

Results of the piece-wise linear mixed-effects model in study 1 across all experimental stages.

Gender and group Intercept Baseline Intervention Follow-up Conditional R2


Slope P value Change in slope P value Change in slope P value
Male (N=54)






0.27

Self-monitoring (n=15) 8169.98 1254.20 .03 −1422.16 .02 48.66 .84

PAa-consistent intervention (n=21) 7930.21 −142.53 .77 181.10 .71 −148.91 .46

PA-inconsistent intervention (n=18) 9267.26 166.57 .75 −128.39 .82 −213.44 .32
Female (N=63)






0.15

Self-monitoring (n=22) 8082.79 −766.83 .14 854.63 .12 −84.81 .68

PA-consistent intervention (n=19) 8181.32 −37.13 .95 152.45 .79 −54.04 .81

PA-inconsistent intervention (n=22) 8118.16 −525.53 .30 496.86 .35 42.54 .84

aPA: physical activity.