An Online Wellness Intervention for University Students

Depressive symptoms

Patient Health Questionnaire-9 (PHQ-9), a commonly used measure for depressive symptoms. The PHQ-9 has 9 items which capture the frequency of depressive symptoms over the preceding two weeks using a scale from 0-3. A score of 0-4 indicates no depression, 5-9 indicates mild depression, 10-14 indicates moderate depression, 15- 19 indicates moderately severe depression and 20-24 indicates severe depression. The PHQ-9 has a sensitivity and specificity of 88% for detecting clinical depression.

Time frame: 2 weeks, 4 weeks post randomisation

Anxiety symptoms

General Anxiety Disorder 7-item Checklist (GAD-7), a commonly used measure for symptoms of anxiety. The GAD-7 has 7 items which capture the frequency of anxious symptoms over the preceding two weeks using a scale from 0-3. A score of 0-4 indicates no anxiety, 5-9 indicates mild anxiety, 10-14 indicates moderate anxiety and ≥15 indicates severe anxiety. The GAD-7 has a sensitivity and specificity of 89% and 82% respectively.

Time frame: 2 weeks, 4 weeks post randomisation

Positive and negative affect

Positive and Negative Affect Schedule (PANAS), a commonly used measure of positive and negative affect. The PANAS has 20 items that captures participants feelings of positive and negative affect over the past week using a scale from 1 to 5.

Time frame: 2 weeks, 4 weeks post randomisation

Well-being

Warwick-Edinburgh Mental Well-being Scale (WEMWBS), a commonly used measure of well-being. The WEMWBS has 14 items that captures participants feelings and thoughts that best describe their experience over the previous 2 weeks using a scale from 1 to 5. Higher scores indicate better wellbeing.

Time frame: 2 weeks post randomisation