9+1 Q Questionnaire
Follows same, 0-1-2-3 metric
1-4 Minimal depression
5-9 Mild depression
10-14 Moderate depression
15-19 Moderately severe depression
20-27 Severe depression
Here, there are 9 questions that are scored upon, with an extra 1 question which gives a little more extra information, not relevant right now.
Here is the link for the information