The questions were
1. Have you felt an extreme anxiety?
2. Have you felt so down that nothing could cheer you up?
3. Have you felt calm and composed?
4. Have you felt downhearted and blue?
5. Have you been happy?
Each question offered six different answering categories: all the time, most of the time, often, sometimes, seldom and never.
In the positively formulated questions 3 and 5, the score 0 points was assigned to the least positive answer, and 5 points awarded to the most positive answer. In the negatively formulated questions 1, 2 and 4, the score 0 points was assigned to the most negative answer, and 5 points awarded to the least negative answer. Subsequently, simple total scores were calculated and multiplied by 4, meaning the respondent’s score could range from a minimum total score of 0 (very unhealthy) to a maximum score of 100 (perfectly healthy). A score of 60 or above then qualified a respondent as mentally healthy and below 60 as mentally unhealthy.