Table 3.
Time and events schedule
| Visit/measure | Measure description | Screening/baseline | Week 1 | Week 4 | Week 8 follow-up | Week 12 follow-up |
|---|---|---|---|---|---|---|
| Housing status | A brief self-reported measuring describing participant’s housing status | X | - | X | X | X |
| MINI–PTSD Module | A structured interview assessing symptoms of PTSD in the past 30 days | X | - | - | - | - |
| CAPS-5 | A structured interview, administered during therapy, to assess a traumatic event(s) and associated symptoms in the past 30 days | - | X | - | - | - |
| PCL-5 with Life Events Checklist (LEC) | A 20-item self-report evaluating the severity of PTSD symptoms over the previous 30 days; LEC assesses exposure to 16 events known to potentially result in PTSD | - | X | - |
X (PCL-5 only) |
X (PCL-5 only) |
| Demographics | Self-reported sociodemographic variables including gender, sexual orientation, ethnicity, education, and marital status | X | - | - | - | - |
| Addiction Severity Index | A semi-structured interview used to assess the severity of substance abuse problems, both lifetime and past 30 days | X | - | X | X | X |
| AUDIT | A brief 10-item self-report questionnaire assessing alcohol misuse | X | - | X | X | X |
| ADHD Self-Report Scale | An 18-item self-report questionnaire that assesses the inattentive (6 items) and hyperactive/impulsive (12 items) dimensions of ADHD | X | - | - | - | - |
| Montreal Cognitive Assessment | A brief interview assessing multiple cognitive domains including visuo-constructional skills, naming, memory, attention, sentence repetition, verbal fluency, abstraction, delayed recall, and orientation | X | - | - | - | - |
| Short Form Health Survey (SF-20) or EQ-5D-5L |
The SF-20 was used from February 2019 to September 2019. This is a 20-item questionnaire that assesses various health outcomes, and the extent to which health-related problems interfere with daily life. The EQ-5D-5L was used from September 2019 to the end of the study. The EQ-5D-5L is a 5-item questionnaire that assesses health-related quality of life |
X | - | X | X | X |
| Health Care Costs | A self-report questionnaire asking about missed time from work/volunteer/school and utilization of healthcare services | X | - | X | X | X |