Table 2 Participant demographics

Gender

 Female

11 (73.3)

 Male

01 (6.7)

 Non-binary/not stated

03 (20.0)

Age, years– mean (range)

15.3 (12 to 18)

Ethnicity

 White British

15 (100)

Highest completed level of education*

 Primary school

09 (60%)

 Secondary school (up to GCSEs)

06 (40%)

Time receiving support from services in months– mean (range)

10.3 (1 to 50)

Index of multiple deprivation decile** - mean (range)

05.4 (1 to 10)

Previously used a mental health app

 Yes

05 (33.3)

 No

10 (66.7)