Table 1 Time point of each outcome measure

Severity of BPD

BPDSI-IV-ado

A

Interview

x

x

x

Severity of depression and anxiety

PHQ-9^a

A

Questionnaire

x

x

x

x

x

GAD-7^a

A

Questionnaire

x

x

x

x

x

C-SSRS^a

A

Interview

x

x

x

BSI

A

Questionnaire

x

x

x

x

x

CBCL

P

Questionnaire

x

x

x

x

x

Personality functioning

LPFS-BF 2.0^a

A

Questionnaire

x

x

x

x

x

RFQ-8

A

Questionnaire

x

x

x

x

x

Social functioning

WHODAS 2.0^a

A

Questionnaire

x

x

x

x

x

KIDSCREEN-10^a

A

Questionnaire

x

x

x

x

x

EQ-5D-NL

A

Questionnaire

x

x

x

x

x

NRS-BSV

A

Questionnaire

x

x

x

x

x

Academic functioning

School attendance

A

Questionnaire

x

x

x

x

x

Economic evaluation

TiC-P

P

Questionnaire

x

x

x

x

Questions about extra time investment treatment

P

Questionnaire

x

x

x

x

Demographic variables

Questions about living situation, nationality, level of education, current school, and/or work status

A

Questionnaire

x