Table 2.

Sample covariates assessed at trial baseline (N = 542)

Categorical variables	N	%a
Recruitment Setting (missing = 20)
Youth Clinics	27	5.2
Psychotherapy Clinic	29	5.6
Specialized Therapy Programs	77	14.8
Crisis Services	92	17.6
Substance use disorder program	100	19.2
General Psychiatry Clinics	197	37.7
Gender (missing = 4)
Transgender	1	0.2
Woman	393	72.5
Man	144	26.6
Ethnicity (missing = 0)
White	444	81.9
Non-white	98	18.1
Relationship Status (missing = 0)
In a relationship	288	53.1
Not in a relationship	254	46.9
Employment Status (missing = 3)
Full-time	181	33.6
Part-time	100	18.6
Not working - retired or actively looking for work	76	14.1
Not working – not looking for work	182	33.8
Agree with: Self-help tools helpful for people with mental health problems (missing = 0)
Somewhat or definitely agree	518	95.6
Somewhat or completely disagree	24	4.4
How much expected improvement in mental health through BWW (missing = 0)
Less than 50%	195	36.0
More than 50%	204	37.6
50%	143	26.4
Prior 3-month mental health contacts (missing = 9)
High	173	32.5
Moderate	242	45.4
Low	118	22.1
PHQ-9 depression score (missing = 0)
Severe	166	30.6
Moderate-severe	122	22.5
Moderate	125	23.1
Mild	90	16.6
Minimal	39	7.2
GAD-7 anxiety score (missing = 0)
Severe	207	38.2
Moderate	70	24.5
Mild	133	12.9
None	132	24.4
Continuous variables	Mean	SD
Age (missing = 0)	41.1	13.4
Age first experienced mental health problems (missing = 0)	18.7	12.5
RAS-r subscales (missing = 3)
Personal confidence and hope	27.0	6.7
Willingness to ask for help	10.8	2.7
Goal and success orientation	17.8	3.7
Reliance on others	15.3	2.9
Not dominated by symptoms	7.1	2.7

^aPercentages are calculated after missing data removed

PHQ-9 Patient Health Questionnaire-9 item for depression

GAD-7 Generalized Anxiety Disorder Questionnaire-7 item for anxiety

RAS-r Recovery Assessment Scale-revised