Table 1 Stem statement and items for PD-6* Scale and K6** Scale

"How much trouble have you had with each of these things in the past month?"

"During the past 30 days, how often did you feel ..."

1) feeling blue or down in the dumps or depressed

1) so sad that nothing could cheer you up?

2) feeling nervous, fidgety, tense

2) nervous?

3) being so restless I can't sit still

3) restless or fidgety?

4) feeling hopeless about the future

4) hopeless?

5) having trouble getting myself going

5) that everything was an effort?

6) feeling worthless

6) worthless?