Does a coexisting anxiety disorder predict persistence of depressive illness in primary care patients with major depression?

Gen Hosp Psychiatry. May-Jun 1999;21(3):158-67. doi: 10.1016/s0163-8343(99)00005-5.

Abstract

We assessed whether a coexisting anxiety disorder predicts risk for persistent depression in primary care patients with major depression at baseline. Patients with major depression were identified in a 12-month prospective cohort study at a University-based family practice clinic. Presence of an anxiety disorder and other potential prognostic factors were measured at baseline. Persistent depressive illness (major depression, minor depression, or dysthymia) was determined at 12 months. Of 85 patients with major depression at baseline, 43 had coexisting anxiety disorder (38 with social phobia). The risk for persistent depression at 12 months was 44% greater [Risk Ratio (RR) = 1.44, 95% confidence interval (CI) 1.02-2.04] in those with coexisting anxiety. This risk persisted in stratified analysis controlling for other prognostic factors. Patients with coexisting anxiety had greater mean depressive severity [repeated measures analysis of variance (ANOVA), p < 0.04] and total disability days (54.9 vs 19.8, p < 0.02) over the 12-month study. Patients with social phobia had similar increased risk for persistent depression (RR = 1.40, 95% CI 0.98-2.00). A coexisting anxiety disorder indicates risk for persistent depression in primary care patients with major depression. Social phobia may be important to recognize in these patients. Identifying anxiety disorders can help primary care clinicians target patients needing more aggressive treatment for depression.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adolescent
  • Adult
  • Anxiety Disorders / complications*
  • Anxiety Disorders / diagnosis
  • Anxiety Disorders / psychology
  • Cohort Studies
  • Depressive Disorder, Major / complications*
  • Depressive Disorder, Major / diagnosis
  • Depressive Disorder, Major / psychology
  • Disease Progression
  • Female
  • Humans
  • Male
  • Middle Aged
  • Phobic Disorders / complications
  • Phobic Disorders / diagnosis
  • Phobic Disorders / psychology
  • Primary Health Care*
  • Prognosis
  • Prospective Studies
  • Severity of Illness Index
  • Time Factors