Table 5. Intention-to-treat analysis of latent growth curve modeling of social anxiety symptoms in the overall sample. The Gelman–Rubin statistics (rhat) for all coefficients was 1.0.
| Intervention effect | Baseline (Wave 1), mean (SD) | Wave 2, mean (SD) | Wave 3, mean (SD) | Wave 4, mean (SD) | SMDa | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| β | 95% LLb | 95% ULc | Wald | P value | ||||||
| Social anxiety symptoms in virtual communitiesd,e | ||||||||||
| Experiment | 0.666 | –0.109 | 1.48 | 1.649 | .099 | 28.95 (18.97) | 31.89 (17.85) | 31.87 (17.64) | 31.96 (18.4) | 0.11 |
| Waitlist | —f | — | — | — | — | 28.39 (19.07) | 31.12 (18.04) | 30.79 (17.87) | 29.79 (18.92) | — |
| Social anxiety symptoms in physical communitiesg | ||||||||||
| Experiment | 0.319 | –0.534 | 1.095 | 0.771 | .441 | 46.81 (23.49) | 48.93 (21.21) | 47.79 (20.41) | 47.61 (20.53) | 0.06 |
| Waitlist | — | — | — | — | — | 45.66 (23.22) | 46.24 (21.3) | 46.07 (20.51) | 45.54 (21.16) | — |
a
SMD: Standardized Mean Difference.
b
LL: lower limit.
c
UL: upper limit.
d
Widely Applicable Bayesian Information Criterion (WAIC) -15995.2, leave-one-out (LOO) -16147.0.
e
LOO -16467.5.
f
Not applicable.
g
WAIC -16332.1.