PSS

1. In the last month, how often have you been upset because of something that happened unexpectedly?

Never Almost Never Sometimes Fairly Often Very Often Decline to answer

2. In the last month, how often have you felt that you were unable to control the important things in your life?

Never Almost Never Sometimes Fairly Often Very Often Decline to answer

3. In the last month, how often have you felt nervous and "stressed"?

Never Almost Never Sometimes Fairly Often Very Often Decline to answer