A Brief Case Management Intervention for People Involuntarily Admitted to a Psychiatric Hospital

Number of eligible patients/number of patients involuntarily hospitalised on site during study period as reported in a structured flowchart by the case managers after each site visit

Number of patients accepting to participate/number of approached patients as reported in a structured flowchart by the case managers after each site visit and based on the number of signed consent forms

Number of patients who completed the programme/number of recruited patients as reported by case managers in a structured questionnaire detailing which intervention sessions were delivered to each patient

Mean number of sessions delivered per participant as reported by case managers in a structured questionnaire detailing which intervention sessions were delivered to each patient

Percentage of missing data

Number of unexpected adverse events related to the intervention reported in a structured form by the case managers or the investigator

Participants' acceptance and degree of satisfaction with both the intervention and the research process qualitatively assessed through semi-structured interviews

Barriers and facilitating factors encountered throughout the implementation process as described by some members of the hospital team, during in-depth semi-structured interviews.

The French validated version of the Recovery Assessment Scale (RAS), a 24-item, patient-oriented outcome inventory which assesses personal recovery on a five-point Likert scale ranging from 1="strongly disagree" to 5="strongly agree". The instrument provides a total score of personal recovery as well as sub-scores on five specific dimensions: personal confidence and hope, willingness to ask for help, goal and success orientation, reliance on others, no domination by symptoms. Both the total score and the five sub-scores are used in the study. Higher scores correspond to better recovery.

The validated Empowerment Scale, a 28-item measure assessing personal empowerment as defined by mental health service-users on a four-point Likert scale ranging from "strongly disagree" to "strongly agree". The total score is used for the study. Higher scores correspond to higher empowerment.

The French validated version of the Rosenberg Self-Esteem Scale (RSS), a very short 10-item inventory measuring self-esteem on a four-point Likert scale from 1="strongly disagree" to 4="strongly agree". The RSS total score may range between 10 and 40, with higher scores indicating higher level of self-esteem.

The Paradox of Self-Stigma scale (PaSS-24), a short French-language scale measuring self-stigma and its three related construct of stereotype endorsement, righteous anger and non-disclosure. It includes 24 items rated on a five-point Likert scale ranging between 1="strongly disagree" and 5="strongly agree". The three sub-scores are used in the study.

The French validated version of the Beck Hopelessness Scale (BHS), an inventory of 20 true-false items which assess negative expectations about the future on three dimensions: feeling about the future, decrease in motivation and expectations. BHS total score can range between 0 and 20, with higher scores reflecting higher levels of hopelessness.

The French validated version of the WHOQOL-BREF, a scale including 26 Likert type items, measuring quality of life in four domains: physical health, psychological health, social relationships and environment. Its total score is used in the study.

The French validated version of the International Trauma Questionnaire (ITQ), a scale to assess Post Traumatic Stress Disorder (PTSD) and Complex Post Traumatic Stress Disorder (C-PTSD) symptoms among adults. The inventory includes 18 items: six to assess the PTSD, six to assess the Disorders in Self Organisation (DSO), and six to assess functional impairment in several important areas of life. Respondents are required to indicate, on a five-point scale from 0="not at all" to 4="extremely", how much each symptom has bothered them in the past month. A total score, ranging between 0 and 24, can be calculated for the PTSD and DSO subscale. A C-PTSD score, ranging between 0 and 48, can also be calculated by adding the PTSD and DSO subscales. Both the PTSD and the C-PTSD total scores will be used in the study.

The Coercion Ladder (CL), a single-item instrument asking patients to rate their experience of care on a visual analogue scale ranging from 1="minimum use of coercion" to 10="maximum use of coercion".

The Index of fairness and the Index of effectiveness, two self-administered inventories which assess if participants perceived the experienced treatment pressures as fair and effective. The indices include four items each, rated on a five-point Likert scale from 1="strongly disagree" to 5="strongly agree". The two indices total scores are used in the study. Higher scores indicate higher perceived fairness and effectiveness.

The Satisfaction with hospital care questionnaire, a six-item tool developed by the Swiss National Association for Quality Development in hospitals and clinics (ANQ), assessing patients' satisfaction about quality of treatment, information and communication, medication, patient's implication and discharge preparation, on a five-point Likert scale. The total score of global satisfaction is used in the study. Higher score corresponds to higher satisfaction. Moreover, the ANQ questionnaire includes one-item subscale on five-point assessing répondeurs' self-reported health. This subscale is also used in the study.

The Brief INSPIRE scale, a service user-rated measure assessing perceived staff support for personal recovery. The Brief INSPIRE consists of five items, one for each personal recovery domain. Responders are asked to rate on a five-point Likert scale, from 0="not at all" to 4="very much", how much they feel supported by staff in each domain of their personal recovery. A total score between 0 and 100 can be computed, with higher scores indicating higher perceived support.