Table 1.
List of variables that were extracted from the included studies
| Variable name | Coding categories |
|---|---|
| Categorical variables | |
| Study location | North America (N. America) |
| Europe (EU) | |
| VR program developer as an author of the study | Yes |
| No | |
| Recruitment pool | Community volunteers |
| Clinical setting | |
| Army enlisted personnel | |
| Type of control or comparison group | Other (Placebo/Relaxation/Treatment-as-usual) |
| Waitlist | |
| CBT (cognitive-behavioral therapy) | |
| IE (imaginal exposure) | |
| IVE (in-vivo exposure) | |
| Type of VR-enhanced intervention | VRCBT (VR-enhanced CBT) |
| VRE (exposure in virtual reality) | |
| Type of anxiety disorder (only for anxiety symptoms) | Flight anxiety |
| Panic disorder | |
| PTSD | |
| Social anxiety | |
| Specific phobia | |
| Risk of bias for incomplete outcome data | High/Unclear risk of bias |
| Low risk of bias | |
| Continuous variables | |
| Publication year | |
| Number of subjects randomized to the VR-enhanced group | |
| Number of drop-outs from the VR-enhanced group | |
| Participant’s mean age | |
| Number of VR sessions | |
| Session duration | as measured in minutes |
| Overall VR therapy duration (weeks) | as measured in weeks |
| Risk of bias score | coded as the total number of criteria at low risk of bias for each included study |
| Number of elements involved in the interaction with the virtual environment | |
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