Psychiatric disorders and asthma outcomes among high-risk inner-city patients.

OBJECTIVE: The purpose of this study was to examine the rate of psychiatric disorders among patients attending an ethnically diverse, inner-city asthma clinic for an initial visit and assess the association between psychiatric disorders and asthma morbidity.
METHODS: A semistructured psychological interview was conducted to assess for psychiatric diagnoses. A pulmonary physician, who was blind to psychiatric disorder, established diagnosis of asthma based on national guidelines.
RESULTS: Sixty-four percent of 85 participants received at least 1 psychiatric diagnosis. The pulmonary physician rated patients with a psychiatric disorder as achieving fewer goals (M = 2.3 +/- 1.3) for asthma control than patients without a psychiatric disorder (M = 3.6 +/- 1.5, p = .0002). Patients with a psychiatric diagnosis more frequently reported an emergency room visit for asthma during the past 6 months (OR = 4.89; 95% CI, 1.76-13.39) and greater use of short-acting beta2-agonist medication (M = 1.5 +/- 0.9 canisters per month) than patients without a psychiatric diagnosis (M = 0.9 +/- 0.8, p = .003). These findings were independent of demographics, health insurance, and asthma severity. No differences emerged between patients with and without a mental disorder on percent predicted FEV1. Patients with a psychiatric disorder reported a higher severity level for asthma symptoms than the severity level indicated by their pulmonary function in comparison to patients without a psychiatric diagnosis (OR = 3.52; 95% CI, 1.23-10.10). Health insurance appeared to be a confounding factor in this relationship.
CONCLUSION: A high rate of psychiatric disorders was found among inner-city asthma patients. Psychiatric diagnoses were associated with greater perceived impairment from asthma but not objective measurement of pulmonary function.