The OPUS YOUNG Trial. Early Intervention Versus Treatment as Usual for Adolescents With First-episode Psychosis

Change in the global score of social function, measured with Personal and Social Performance Scale (PSP). PSP provides a global score on a scale from 1-100, with lower scores indicating lower social functioning. The global score is based on scores on four subdomains (1. Socially useful activities, 2. Personal and social relationships, 3. Self-care, and 4. Disturbing and aggressive behaviour), rated on a 6-point Likert scale (1=absent to 6=very severe). The scoring of PSP is based on all available information and concerns the patient's daily level of functioning in the family, in school, and during leisure time during the past month. Higher global values mean better social function. Researchers will interview the participants prior to the scoring of PSP using a semi structured interview guide suitable for children and adolescents, developed by the OPUS YOUNG research team.

Scale for Assessing Psychotic Symptoms in Schizophrenia (SAPS), used to assess the phenomenological presentation of psychotic symptoms in schizophrenia, is a rating scale to measure positive symptoms in schizophrenia. The SAPS- scale is split into 4 sub-scales (hallucinations, delusions, bizarre behavior and formal thought disorder) each of which are rated from 0 (absent) to 5 (severe) and for each domain is also given a global symptom severity score by the rater. The Psychotic symptom dimension is the sum of global scores, divided by the number of global scores (range 0-5). The psychotic dimension is composed of scores of hallucination and delusions. Higher score indicates worse level of symptoms.

Scale for Assessing Negative Symptoms in Schizophrenia (SANS), used to assess the phenomenological presentation of negative symptoms in schizophrenia, is a rating scale to measure negative symptoms in schizophrenia. The SANS scale is divided into five sub-scales (affective flattening, alogia, avolition-apathy, anhedonia-asociality, attention), each of which are rated from 0 (absent) to 5 (severe) and for each domain is also given a global symptom severity score by the rater (global ratings). The Negative symptoms dimension is calculated as the sum of the global scores, divided by the number of global scores (range 0-5). The negative symptom dimension is composed of scores of anhedonia, avolition, affective flattening and alogia. Higher score indicates worse level of symptoms.

Severity of Disorganized symptom dimension is calculated as the sum of the global scores of formal thought disorder, bizarre and behaviors from Scale for Assessing Psychotic Symptoms in Schizophrenia (SAPS) and the score of inappropriate affects (item within the subscale for affective flattening) in Scale for Assessing Negative Symptoms in Schizophrenia (SANS) (range 0-5).Higher score indicates worse level of symptoms.

Patients satisfaction with the treatment is measured with the CSQ-scale. CSQ assess global client satisfaction, along with single dimension. The CSQ has eight question-items (quality of service, kind of service, met needs, recommend to a friend, amount of help, deal with problems, overall satisfaction, and come back). Patients respond to those question-items using a 4-point Likert scale. Their responses are scored from 1 to 4, and thus the possible total scores range from 8 to 32. Higher scores indicate greater satisfaction. Self-rapport

The participants perception of their quality of life is assessed using the self-administered questionnaire KIDSCREEN-10. KIDSCREEN-10 contains 10 items: (1) Have you felt fit and well? (2) Have you felt full of energy? (3) Have you felt sad? (4) Have you felt lonely? (5) Have you had enough time for yourself? (6) Have you been able to do the things that you want to do in your free time? (7) Have your parent(s) treated you fairly? (8) Have you had fun with your friends? (9) Have you got on well at school? (10) Have you been able to pay attention? Participants respond to those question/items using a 5-point response scale. Answer categories item 1 and 9: not at all-slightly-moderately-very-extremely; all other items: never-seldom-quite often-very often-always. Responses are coded so that higher values indicate better QoL. A low score indicates a poor QOL, and a high score is indicative of a better QOL.

Evaluation of clinical profile: by using K-SADS-PL scale for psychiatric diagnosis of patients.

Hallucinations, Experiences of thought disorder and Delusions, measured with section 17 (Hallucinations), 18 (Experiences of thought disorder) and 19 (Delusions) in Schedules for Clinical Assessment in Neuropsychiatry (SCAN 2.1), using a rating scale (0 - 5), higher score indicating worse level of symptom.

Young Maniac Rating Scale (YMRS), measure the severity of manic episodes. The scale has 11 items and is based on the patient's subjective report of his or her clinical condition over the previous 48 hours. Total score rage is from 0 to 60 and the higher score represent a worse outcome.

HAM-6 measures symptoms of depression for the last 3 days. Total score will be measured. Ranges from 0 to 22. Higher is worse.

Scale for Assessing Psychotic Symptoms in Schizophrenia (SAPS), clinician-administered questionnaire.The SAPS- scale is split into 4 sub-scales (hallucinations, delusions, bizarre behavior and formal thought disorder) each of which are rated from 0 (absent) to 5 (severe) and for each domain is also given a global symptom severity score by the rater (0 - 5). Higher score indicates worse level of symptoms.

Scale for Assessing Negative Symptoms in Schizophrenia (SANS), clinician- administered questionnaire. Higher score indicates worse level of symptoms.The SANS scale is divided into five sub-scales (affective flattening, alogia, avolition-apathy, anhedonia-asociality, attention), each of which are rated from 0 (absent) to 5 (severe) and for each domain is also given a global symptom severity score by the rater (global ratings, range 0-5). Higher score indicates worse level of symptoms.

The Clinical Impression Scale-Severity, (CGI-S), a clinician- administered scale for impression of global psychopathology, rated fra 1 (no sign of mental illness) to 7 (among the most extremely ill patients). Higher score indicates worse level of global Psychopathology.

The Clinical Global Impression Scale - Improvement, (CGI-I), a clinician-administered scale for impression of global improvement of the patients mental health rated from 1(very much improved) to 7 (very much worse). Higher score indicates worse level mental health since the year before.

Self-reported suicidal ideation questionnaire, the patients answer yes or no to question of suicidal behavior ( whether they have ever had suicidal thoughts, and if so, how frequently and whether they acted on and what they did). Positive answer (Yes) means worse outcome.

The Brief Assessment of Cognition in Schizophrenia (BACS) includes brief assessments of executive functions, verbal fluency, attention, verbal memory, working memory and motor speed. Z-scores are calculated from composite scores. Higher z-scores are indicative of better cognitive performance, lower z-scores are indicative of lower cognitive performance. Range of z-scores anticipated to be between -3 and 3.

Hinting Task measures Theory of Mind

Emotional Intensity Morphing Task (EIMT) measures facial emotional recognition

Measures general belief in one's own capabilities. Self-report. Total score is measured. Ranges from 10 to 40. Higher scores indicate better self-efficacy

Measured the experience of alliance between the client and the therapist(s). Self-report. Total score is measured. Ranges from 12 to 60. Higher scores indicate better alliance.

Self-reported questionnaire of participants impressions of negative effects of the treatment they received. The NEQ answers 16 questions about their impressions of negative effects of the treatment, from 1 (not at all) to 5 (very much). Higher score means worse.

Days in school/education/employment, self-report

Self-reported questionnaire, EQ-5D-5L is a 5-item questionnaire that assesses 5 domains including mobility, self-care, usual activities, pain/discomfort and anxiety/depression plus a visual analog scale rating "health today" with ranges from 0 (worst imaginable health state) to 100 (best imaginable health state). Each dimension has 5 response options (no problems, slight problems, moderate problems, severe problems and extreme problems) that reflect increasing levels of difficulty. The responses to the 5 dimensions are used to compute a single utility score ranging from zero (worst health state) to 1 (better health state) representing the general health status of the individual.

Self-reported questionnaire about children's health consists of 9 items, each with 5 response categories (scored 1-5) that assess the child/adolescent functioning "today" across domains of worry, sadness, pain, tiredness, annoyance, school, sleep, daily routine and activities. The instrument is available in both self-report (completed by the child). Higher scores mean a worse outcome.

Measured using the Timeline Follow Back interview TEM, in which you systematically go through every day for the last 4 weeks recording any alcohol and drug (legal and illegal) consumption.

Less consumed alcohol and substance will be considered better

Registration and assessment of medication side-effects the last 3 days. Possible score: 0 (not present) to 3 (present to a severe degree). Higher scores mean worse outcome.

The use of antipsychotics and any other medication (drug, daily dosage, duration) will be carefully recorded in both the experimental group and the treatment as usual (TAU) group. Information on medication use will be obtained through the participant's medical journal and by self-reported information at the assessment interview.

A questionnaire for parents to assess executive functions, the BRIEF-2, Parent Form is used for children and young people aged 5-18 years and it includes 63 statements about the child's behavior in everyday life. The statements of BRIEF-2 have 3 (force-choice) possible answers: never (score of 1), sometimes (score of 2), often (score of 3);. The BRIEF-2 includes clinical subscales that measure different aspects of executive functions such as Inhibit, Self-Monitoring, Flexibility, Emotional Control, Initiation, Working Memory, Planning / Organizing, Task Monitoring, and Organizing Materials. Based on these subscales, the BRIEF-2 generates 3 indices (Behavior Regulation, Emotion Regulation, and Cognitive Regulation) as a Global Executive Functioning measure. The Global Executive Functioning raw scores range from a minimum 60 to maximum of 180. Higher scores mean worse executive problems.

The parental stress scale is a parent-reported questionnaire (range 18 -90), a higher score indicates more parental stress

60-item self-report measure of family functioning answered on a four-point Likert scale ranging from 'strongly agree' to 'strongly disagree'.

Measures general belief in one's own capabilities. Total score is measured. Ranges from 10 to 40. Higher scores indicate better self-efficacy

Measures satisfaction with treatment. Total score is measured, ranging from 8 to 32. Higher scores indicate higher satisfaction. Self-report

Self-reported questionnaire of parents impressions of negative effects of the treatment. The NEQ has 16 questions about their impressions of negative effects of the treatment, from 1 (not at all) to 5 (very much). Higher score means worse.

Individual-level data retrieved from The National Patient Register, containing information about contacts with the health care system during the trial period. Data is routinely collected in the Danish health care system independent of this present study. Contacts with the health care system will be assessed and compared as incidence rates of acute/non acute, in-patient/outpatient and psychiatric/somatic contacts.

Data on the patients will be extracted from the following registers from Statistics Denmark: The Danish Population Register, the Danish Psychiatric Central Register, the Danish Education Register, the Danish Register of Special Education, the Danish Institution Register, the Danish Register of School Grades, the Danish Patient Register, the Danish Prescription Register, and the Danish Migration Register. We will assess socio-demographic information including school attendance, school grades and exams, labour market affiliation, civil status, cohabitation status, data on complications to the pregnancy and birth of the participant, education, living in an institution (and type of institution), use of any health care and social services and, in the unlikely event: cause of death.

Individual-level data retrieved from the patients' medical record.

Subdomains of the PSP. PSP is a validated clinician-rated scale that assesses degree of difficulty in 4 areas of functioning: socially useful activities, personal and social relationships, self-care, disturbing and aggressive behaviors rated on 6-point Likert scale (1=absent to 6=very severe), . The scoring of PSP is based on all available information and concerns the patient's daily level of functioning in the family, in school, and during leisure time during the past month. Researchers will interview the participants prior to the scoring of PSP using a semi structured interview guide suitable for children and adolescents, developed by the OPUS YOUNG research team. Higher score indicating worse function

Individual-level data retrieved from Danish National Patient Register containing information about contacts with the health care system during the follow-up period. Data is collected routinely in the Danish health care system, independent of this present study. Contacts with the health care system will be assessed and compared as incidence rates of acute/non-acute, in-patient/out-patient and psychiatric/somatic contacts.

Individual-level data retrieved from the patients' medical record. Measurement of lipids (in serum), triglycerides (mmol/l)

Individual-level data retrieved from the patients' medical record. Measurement of lipids (in serum), total cholesterol,(mmol/l)

Individual-level data retrieved from the patients' medical record. Measurement (mmol/l) of lipids (in serum), low density lipoprotein ( LDL), (mmol/l)

Individual-level data retrieved from the patients' medical record. Measurement of lipids (in serum), very-low-density lipoprotein (VLDL), (mmol/l)

Individual-level data retrieved from the patients' medical record. Measurement of lipids (in serum), high density lipoprotein (HDL), (mmol/l)

Individual-level data retrieved from the patients' medical record. Fasting glucose values, blood test, (mmol/L)

Individual-level data retrieved from the patients' medical record. Determination of prolactin, blood test, (nmol/l)

Individual-level data retrieved from the patients' medical record, red blood cell status, haemoglobin, blood test (mmol/l)

Individual-level data retrieved from the patient's' medical record, white blood cell status, leukocyte cell count (and differential count), (x 10/l) blood test.

Individual-level data retrieved from the patients' medical record, thrombocyte cell count(x 10/l) blood test.

Individual-level data retrieved from the patients' medical record, electrolytes, sodium (Na), blood test (mmol/l)

Individual-level data retrieved from the patients' medical record, electrolytes, potassium (Ka), blood test (mmol/l)

Individual-level data retrieved from the patients' medical record, electrolytes, creatinine, blood test (micromol/l)

Individual-level data retrieved from the patients' medical record, Liver test: aspartate transaminase, (ASAT), blood test (U/l)

Individual-level data retrieved from the patients' medical record, Liver test: alkaline phosphatases, blood test (U/l)

Individual-level data retrieved from the patients' medical record, metabolism: thyroid - stimulating hormone (TSH), blood test (mU/l)

Individual-level data retrieved from the patients' medical record, vitamin D, (nmol/l), blood test