Routine screening for depression and anxiety at each primary care clinical encounter in order to meet performance metrics could compromise accuracy and clinical care, based on data from more than 380,000 individuals in primary care.
“Prioritizing repetition of intake screening questionnaires at primary care visits may have unintended consequences such as administrative burden, provision of low-value care, and reduced clinical capacity to deliver other, high-value services,” but the accuracy of workflow-based intake screening on subsequent diagnosis has not been explored, wrote Jodi Simon, DrPH, of AllianceChicago, Ill., and colleagues.
In a study published in the Annals of Family Medicine, the researchers reviewed data from screenings performed on 380,057 patients in primary care settings. They examined the accuracy and utility of the Patient Health Questionnaire (PHQ-2) for depression and the Generalized Anxiety Disorder 2 (GAD-2) for anxiety.
The data included 1,883,317 screenings with PHQ-2s and 1,573,107 with GAD-2s. Of these, 92.3% of PHQ-2 screenings and 91.4% of GAD-2 screenings indicated low likelihood of depression or anxiety (defined as cumulative scores of 0 or 1). Mean scores for the PHQ-2 and GAD-2 in the study population were 0.29 and 0.35, respectively.
In the current study, 11% of patients had positive PHQ-2 scores (defined as 2 or higher) vs. 47%-53% seen in previous studies and census data.
In an analysis of new diagnoses of depression and anxiety, the researchers found that 42.3% of patients with a new depression diagnosis were not identified on intake screening; they had scores of 0 or 1 on the PHQ-2 in the past 30 days. Similarly, 42.7% of patients with a new anxiety diagnosis had scores of 0 or 1 on the GAD-2 in the past 30 days.
In other words, “Screening only detected risk in 57.7% of patients subsequently diagnosed with depression and 57.3% of patients subsequently diagnosed with anxiety,” the researchers said. This low positivity rate in patients diagnosed within 30 days merits further research, they added.
More studies are needed, but preliminary interviews with patients, clinicians, and staff indicate that time constraints and variation in the administration of questionnaires are among the factors contributing to inaccurate screening, the researchers noted.
The current study results suggest that screenings for anxiety and depression may occur in a perfunctory or inconsistent manner that might compromise accuracy when they are part of the workflow for each clinical visit in order to meet performance metrics, they said. “Ineffective screening may unintentionally detract from clinical care because care teams and patients have less time and cognitive energy to focus on other priorities during busy clinical encounters,” they added.
Alternatively, , the researchers concluded.
The study was funded by the American Medical Association Transformation Initiative. The researchers had no financial conflicts to disclose.