. 2019 Aug 23;10:604. doi: 10.3389/fpsyt.2019.00604

Table 2.

Study inclusion and exclusion criteria for social anxiety disorder and student groups.

Inclusion Criteria	Exclusion Criteria
1. Aged 18–25 years^a 2. Engaged with a current mental health service, general practitioner (or was engaged at time of assessment) ^a^, ^b 3. Provided consent to contact current/previous mental health worker or general practitioner should risk issues arise ^a^, ^b 4. Own a smartphone (Android or iOS) ^a 5. Identified a desire to connect with others ^a 6. Current DSM V of SAD assessed by the SCID-5 ^b^, ^c 7. UCLA Loneliness Scale score >38 ^d	1. Presence of moderate or severe risk issues, i.e., deliberate self-harm and suicidality in the past month ^a 2. Psychiatric hospitalization in the past month ^a 3. Substance abuse or dependence in the past month ^a 4. Known diagnosis of an Axis II personality disorder ^a

Inclusion Criteria

Exclusion Criteria

1. Aged 18–25 years^a
2. Engaged with a current mental health service, general practitioner (or was engaged at time of assessment) ^a^, ^b
3. Provided consent to contact current/previous mental health worker or general practitioner should risk issues arise ^a^, ^b
4. Own a smartphone (Android or iOS) ^a
5. Identified a desire to connect with others ^a
6. Current DSM V of SAD assessed by the SCID-5 ^b^, ^c
7. UCLA Loneliness Scale score >38 ^d

1. Presence of moderate or severe risk issues, i.e., deliberate self-harm and suicidality in the past month ^a
2. Psychiatric hospitalization in the past month ^a
3. Substance abuse or dependence in the past month ^a
4. Known diagnosis of an Axis II personality disorder ^a

Items checked at the initial telephone screen.

Only applicable to those with social anxiety disorder.

Students were accepted only if they did not meet criteria for social anxiety disorder as assessed by the SCID-V.

There is no known threshold for problematic or severe loneliness, but a score of 38 and above was used to indicate above the median score across different samples (Russell, 1996).