Practice patterns in the diagnosis and treatment of anxiety and depression in the medically ill. A survey of psychiatrists

Diagnostic Agreement between Physicians and a Consultation-Liaison Psychiatry Team at a General Hospital: An Exploratory Study across 20 Years of Referrals

Consultation-liaison psychiatry (CLP) manages psychiatric care for patients admitted to a general hospital (GH) for somatic reasons. We evaluated patterns in psychiatric morbidity, reasons for referral and diagnostic concordance between referring doctors and CL psychiatrists. Referrals over the course of 20 years (2000-2019) made by the CLP Service at Modena GH (Italy) were retrospectively analyzed. Cohen's kappa statistics were used to estimate the agreement between the diagnoses made by CL psychiatrist and the diagnoses considered by the referring doctors. The analyses covered 18,888 referrals. The most common referral reason was suspicion of depression (n = 4937; 32.3%), followed by agitation (n = 1534; 10.0%). Psychiatric diagnoses were established for 13,883 (73.8%) referrals. Fair agreement was found for depressive disorders (kappa = 0.281) and for delirium (kappa = 0.342), which increased for anxiety comorbid depression (kappa = 0.305) and hyperkinetic delirium (kappa = 0.504). Moderate agreement was found for alcohol or substance abuse (kappa = 0.574). Referring doctors correctly recognized psychiatric conditions due to their exogenous etiology or clear clinical signs; in addition, the presence of positive symptoms (such as panic or agitation) increased diagnostic concordance. Close daily collaboration between CL psychiatrists and GH doctors lead to improvements in the ability to properly detect comorbid psychiatric conditions.

What determines the management of anxiety disorders and its improvement?

INTRODUCTION

Although anxiety disorders are highly prevalent, lack of correct diagnosis and related concerns about treatment are serious clinical problems. Several factors affect, positively or negatively, management of anxiety and its improvement. A literature review and thematic analysis was executed to obtain an overview of the types of determinants of anxiety care and its improvement.

METHODS

Literature was identified from electronic database searching (January 1995-March 2006), contact with authors of studies, and searching of websites of organizations concerned with mental health. By using a template analysis approach, a set of strong themes relating to determinants of anxiety care and its improvement was identified.

RESULTS

The 15 eligible studies identified 43 factors that impeded or facilitated optimal anxiety care and its improvement. Individual characteristics of both patients (n = 13) and professionals (n = 6) were most frequently reported as determinants of anxiety care and its improvement. A considerable number of factors were related to the organizational context (n = 12), such as practice type and location. Some factors related to the social context (n = 4), the economic context (n = 2), or to the innovation itself (n = 6) were identified.

CONCLUSION

The findings show that there is a multitude of barriers and facilitators to optimal anxiety care and its improvement. Some determinants are modifiable, and thus responsive to interventions. Examples are collaboration within and between organizations, financial resources and assignment of both an opinion leader and responsible staff. The quality of anxiety care can be improved by systematically designing innovation strategies which are tailored to a selection of the determinants identified in this study.

Identifying physician-recognized depression from administrative data: consequences for quality measurement

BACKGROUND

Multiple factors limit identification of patients with depression from administrative data. However, administrative data drives many quality measurement systems, including the Health Plan Employer Data and Information Set (HEDIS).

METHODS

We investigated two algorithms for identification of physician-recognized depression. The study sample was drawn from primary care physician member panels of a large managed care organization. All members were continuously enrolled between January 1 and December 31, 1997. Algorithm 1 required at least two criteria in any combination: (1) an outpatient diagnosis of depression or (2) a pharmacy claim for an antidepressant Algorithm 2 included the same criteria as algorithm 1, but required a diagnosis of depression for all patients. With algorithm 1, we identified the medical records of a stratified, random subset of patients with and without depression (n = 465). We also identified patients of primary care physicians with a minimum of 10 depressed members by algorithm 1 (n = 32,819) and algorithm 2 (n = 6,837).

RESULTS

The sensitivity, specificity, and positive predictive values were: Algorithm 1: 95 percent, 65 percent, 49 percent; Algorithm 2: 52 percent, 88 percent, 60 percent. Compared to algorithm 1, profiles from algorithm 2 revealed higher rates of follow-up visits (43 percent, 55 percent) and appropriate antidepressant dosage acutely (82 percent, 90 percent) and chronically (83 percent, 91 percent) (p < 0.05 for all).

CONCLUSIONS

Both algorithms had high false positive rates. Denominator construction (algorithm 1 versus 2) contributed significantly to variability in measured quality. Our findings raise concern about interpreting depression quality reports based upon administrative data.

Consultation-liaison psychiatrists' use of antidepressants in the physically ill

In a practice-based, prospective study of 917 inpatients referred to a consultation-liaison psychiatry service and diagnosed as depressed, 41% were prescribed an antidepressant: 40% tricyclics, 35% selective serotonin reuptake inhibitors (SSRIs), 15% monoamine oxidase inhibitors (MAOIs)/reversible inhibitors of monoamine (RIMAs) (mainly moclobemide), and 11% tetracyclics (mianserin). Factors associated with choice of antidepressant type included age, referral for pain, length and seriousness of physical illness, type of physical illness, and concurrent antipsychotics (P < 0.01). Tetracyclics and MAOI/RIMAs were used significantly more often than tricyclics in the more severely physically ill and the elderly. The percentage of patients prescribed an antidepressant increased significantly over time, which is accounted for by the greater use of SSRIs across all age groups and degrees of seriousness of illness. There is a paucity of randomized controlled trials on which to base practice guidelines. Practice-based research such as this helps inform those guidelines.

Adverse reactions to antidepressants in consultation-liaison psychiatry inpatients

In a practice-based, prospective study of 1,551 inpatients referred to a consultation-liaison psychiatry service and prescribed an antidepressant, an adverse drug reaction judged sufficient to warrant discontinuation of the drug was noted in 158 (10.2%). The factors associated were older age (P < 0.05); ICD-9 genitourinary disorder (mainly renal failure) (P < 0.01); DSM-IV "delirium, dementia, etc." (P < 0.05); length of stay (P < 0.001); number of visits (P < 0.001); and time spent on case (P < 0.05). Neither psychological functioning (GAF) nor physical functioning (Karnofsky ratings) were associated with a reaction, nor was multiple psychotropic drug prescription. Tricyclics were more likely than selective serotonin reuptake inhibitors/norepinephrine reuptake inhibitors to be associated with a reaction (P < 0.05). Consultation-liaison psychiatrists need to be well informed about pharmacodynamics and drug interactions in patients with physical/psychiatric comorbidity.

Are psychiatrists' characteristics related to how they care for depression in the medically ill? Results from a national case-vignette survey

The authors' goal was to examine the relationship between psychiatrists' characteristics and their decisions regarding depression care. A national sampling of 278 psychiatrists answered diagnosis and treatment questions for one of four case vignettes with depression and various degrees of medical comorbidity. They also responded to a questionnaire assessing practice and demographic characteristics. Tendency to diagnose major depression was significantly associated with being board certified, being in practice for less time, having a greater percentage of patients with managed care, and having a greater percentage of patients on psychotropic medications. Tendency to recommend an antidepressant was significantly associated with the psychiatrist being male, being less satisfied with practice, and having a greater percentage of patients on psychotropic medications. These findings remained significant even after controlling for case characteristics. Diagnostic and prescribing tendencies of psychiatrists appear to be associated with specific physician characteristics and not simply case characteristics. These findings have implications for further studies of predictors of quality of care.

Psychostimulant prescriptions by psychiatrists higher than expected: a self-report survey

OBJECTIVE

To survey Alberta psychiatrists on their prescribing of psychostimulants to adults.

METHOD

A questionnaire was mailed to all 245 registered psychiatrists in Alberta. The respondents were requested to anonymously report, for the previous year, the number of adult patients to whom they prescribed pemoline, methylphenidate, amphetamines, or other psychostimulants for the treatment of adult attention-deficit hyperactivity disorder (ADHD), narcolepsy, unipolar depression, bipolar disorder, dementia, and other disorders.

RESULTS

The response rate was 93.9%; 88.7% treated adults. Of these, 46.6% prescribed psychostimulants to 1238 patients. The greatest proportion of prescriptions of psychostimulants was for adult ADHD, depression, and narcolepsy.

CONCLUSIONS

Psychostimulants are more widely prescribed by psychiatrists than indicated in earlier studies and in recommendations for treatment.

Consultation-liaison psychiatrists management of depression

Prospective data on 1,360 consecutive inpatients referred to the consultation-liaison psychiatry service of 2 metropolitan general teaching hospitals and diagnoses as having a Depressive Illness Spectrum Disorder were collected by using the MICRO-CARES clinical database system. The distribution of DSM-III-R diagnoses was major depression (MD) 49%; dysthymia (DYS) 15%; organic or substance-induced mood disorder or depressive disorder not otherwise specified (ORG/NOS) 14%; and adjustment disorder with depressed mood (AD) 29%s. Antidepressants were prescribed in 59% of the MD cases, 40% of the DYS cases, 36% of the ORG/NOS cases, and 17% of the AD cases. In confirmed MD, antidepressants were prescribed in 69%, and significantly more often in those who were older, female, had a prior history of physical illness, had a neoplasm or a disorder of the nervous or musculoskeletal systems, had higher Axis IV scores, or were referred because of pain or terminal illness. The patients with confirmed MD prescribed antidepressants had a longer length of stay and were referred later than those not prescribed antidepressants. The results illustrate the importance of all the forms of depression in consultation-liaison psychiatry and the vigor with which all forms are treated.