From: Diagnostic utility of a one-item question to screen for depressive disorders: results from the KORA F3 study
Single item screener
Total
PHQ-9 “depressive mood”
Positive
Negative
Abnormal
406
475
881
Normal
130
2139
2269
PHQ-9 “major depressive disorder”
169
35
204
367
2579
2946
536
2614
3150