Comparison of mean anxiety among the study groups (before, at the end of the intervention, and one month after the end of the intervention)

TimeIntervention (Mean ± SD)Sham (Mean ± SD)Control (Mean ± SD)Test result*
Test statisticsp-value
Before intervention (Time 1)129.82 ± 21.95126.81 ± 20.66133.00 ± 14.590.8470.432
End of the intervention (Time 2)120.53 ± 19.75126.34 ± 21.48132.94 ± 14.713.7050.028
One month after the end of the intervention (Time 3)125.35 ± 20.44127.06 ± 21.13133.12 ± 14.381.5870.210
p-value< 0.00010.5800.325--
Score differences during intervention timesTime 2 – Time 1–9.29 ± 6.31–0.47 ± 3.88–0.06 ± 0.3449.866< 0.0001
Time 3 – Time 1–4.47 ± 4.310.25 ± 2.530.12 ± 0.6928.536< 0.0001
Results of variance analysis of one-way repeated measuresGroup and time interaction---28.536< 0.0001
Group effect---1.6170.204
Time effect---21.948< 0.0001

SD: standard deviation; -: not applicable; * one-way repeated measures ANOVA