Generating Evidence for a Support Package to Stabilize Youth Trajectories Out of Homelessness

Participants coded in a binary manner as having gained or sustained housing (binary positive) or lost (binary negative) based on assessment of the participant's trajectory from baseline to 6 months.

Participants coded in a binary manner as having gained or sustained education or employment (binary positive) or lost (binary negative) based on assessment of the participant's trajectory from baseline to 6 months.

Participants coded in a binary manner as having gained or sustained mental health status without crises (binary positive) or experienced a crises that impacted major life domains (binary negative) based on assessment of the participant's trajectory from baseline to 6 months.

The Housing Security Scale contains 12 items on a 5 point likert scale (Frederick et al., 2014). Scores range from "strongly disagree" (minimum = 1) to "strongly agree" (maximum = 5). Higher scores indicate better outcomes. Mean item range is 1-5 with pre-post difference reported.

The Housing Security Scale contains a 4 item subscale that measures subjective housing satisfaction and perception of housing stability (Frederick et al., 2014). Scores range from "strongly disagree" (minimum = 1) to "strongly agree" (maximum = 5). Higher scores indicate better outcomes with a mean range of 1-5 with pre-post change reported.

Mental Health Continuum - Short Form assess mental health and addictions by measuring emotional, psychological and social well-being. It contains 14 items on a 6 point scale ranging from at minimum "never" (0) to, at maximum, "every day" (5). Higher scores indicate better outcomes. Range is 0-5 (means) with pre-post differences reported.

Cognitive and Affective Mindfulness Scale Revised was used to measure mindfulness and has demonstrated acceptable reliability (Feldman, Hayes, Kumar, Greeson, & Laurenceau, 2007). It contains 10 items. The minimum score is "rarely/Not at all" (1) and the maximum score is "almost always" (4). Higher scores indicate better outcomes with a mean item range from 1-4 with pre-post mean change reported.

Behavioural and psychological aspects of community integration was examined using Community Integration Scale The scale contains 7 dichotomous questions with higher scores indicating greater community integration (better outcomes). Mean item range is 0-1 with mean change reported.

Behavioural and psychological aspects of community integration were examined using the Community Integration Measure. The measure contains 6 items scored on a 5 point scale ranging from, at minimum, "always disagree" (1) to, at maximum, "always agree" (5). Higher scores indicating better outcomes with an item mean range from 1-5 with mean pre-post differences reported.

Resilience will be measured using the 10-item Resilience Scale. Each item score ranges from, at minimum, "Not true at all" (0) to, at maximum, "True nearly all the time" (4) with higher scores indicating better outcomes. Mean item range is from 0-4 with pre-post change in means reported.

Adult Hope Scale, a cognitive measure of hope, was employed. This self-report questionnaire contains 8 questions that are each scored on an 8 point Likert scale with scores ranging from "Definitely False" to "Definitely True". Higher scores indicate better outcomes. Mean item range is minimum 1 to maximum 8 with pre-post mean differences reported.

Mental health (and addictions) was measured using the Global Assessment of Individual Needs Short Screener, which includes 22 items scored on a 5 point scale ranging from "never" (0) as the minimum score and "past month" (4) as the maximum score. Higher scores indicate worse outcomes. Mean item range is 0-4 with pre-post mean change reported.

We used a modified version of the Medical Outcomes Study Social Support Survey to measure social support. It is a 15-item 5-point Likert-type scale. The maximum score is "all of the time" (5) and the minimum score is "none of the time" (1). Higher score indicates better outcome. Item mean range is 1-5 with pre-post mean difference reported.

The brief World Health Organization Quality of Life Scale - BREF contains 26 items, each scored from 1 to 5 with various labels for each score (e.g. 1= "very poor" for item 1 and 1= "very dissatisfied" for item 2). Higher scores indicate better outcomes with a mean item range of 1-5 with pre-post mean change reported.