Stanford Technology Analytics and Genomics in Sleep

phq_1000

Patient Health Questionnaire 9: Total Score

Summary score for Patient Health Questionnaire 9-item. Each item is scored from 0 to 3, while the total score range from 0 to 27. The PHQ-9 score can be divided into the following categories of increasing severity: Not Clinically significant (0-4), Minimal Symptoms (5-9), Minor depression/Dysthymia/Mild Major Depression (10-14), Moderately Severe Major Depression (15-19), and Severe Major Depression (20-27). Kroenke K et al. 2001 (PubMED ID: 11556941)

Search for all PHQ-9 variables within this dataset

phq_1000 = PHQTotal=phq_0100+phq_0200+phq_0300+phq_0400+phq_0500+phq_0600+phq_0700+phq_0800+phq_0900

integer

phq9 phq9_total