Serious mental illness, other mental health disorders, and outpatient health care as predictors of 30-day readmissions following medical hospitalization

Psychiatric comorbidities on an inpatient dermatology consultation service: A cross-sectional analysis

Despite the high prevalence of psychiatric illness in hospitalised dermatology patients, characterisation of psychiatric comorbidities on an inpatient dermatology consultation service in the United States has yet to be performed. To fill this gap in knowledge, we investigated the prevalence of and factors associated with psychiatric illness on the inpatient dermatology consultation service at the University of Southern California. Of the 429 patients seen by the dermatology consultation service between June 2021 to July 2022, 147 (34%) had psychiatric illness (defined as having at least 1 psychiatric diagnosis). Increasing age was associated with a decreased likelihood of psychiatric illness, while housing instability, chronic dermatologic disease, drug reaction, and pruritus without rash were associated with an increased likelihood of psychiatric illness. The high prevalence of psychiatric illness observed in hospitalised dermatology patients emphasises the importance of collaboration between consultant dermatologists and mental health specialists, particularly when specific sociodemographic or disease factors are present.

Are early post-discharge physician contacts associated with 30-day psychiatric re-hospitalisation? A nationwide claims data based retrospective cohort study in Austria free of immortal time bias

OBJECTIVES

Cost containment and quality of care considerations have increased research interest in the potential preventability of early re-hospitalisations. Various registry-based retrospective cohort studies on psychiatric re-hospitalisation have focused on the role of early post-discharge service contacts, but either did not consider their time-dependent nature ('immortal time bias') or evaded the issue by analysing late re-hospitalisations. The present study takes care of the immortal time bias in studying early psychiatric re-hospitalisations.

METHODS

In a retrospective cohort study using nationwide electronic claims data in Austria, 10,689 adults discharged from acute psychiatric inpatient wards were followed up for 30 days. Cox regression analyses were performed with post-discharge psychiatric and general practitioner contacts as time-dependent covariates and time to first psychiatric re-hospitalisation as outcome.

RESULTS

Post-discharge ambulatory physician contacts were significantly associated with a decreased psychiatric re-hospitalisation rate (hazard ratio 0.77 [95% CI 0.69; 0.87], p < 0.0001), with similarly strong contributions to this association by general practitioners and psychiatrists.

CONCLUSIONS

Despite avoiding the immortal time bias and controlling for several confounders, we suggest to be cautious with a causal interpretation of the identified association, since potentially relevant confounders, such as disease severity, were unavailable in our claims data base.

Evaluation of Psychiatric Rehospitalization of Individuals Treated at a Federally Qualified Health Center

At a federally qualified health center which often receives discharge referrals from the local hospital, rehospitalization rates and reasons were unknown yet pertinent information for assuring timely follow-up appointments. This study examined psychiatric discharge and rehospitalization between August 2020 and January 2021. Between August and October 2020, all adult patients of the FQHC were investigated who presented to or were discharged from the hospital. Those who received a primary psychiatric diagnosis were then examined retrospectively (between November 2020 and January 2021) to determine readmission status. During the study period, 36 patients were hospitalized with primary psychiatric diagnoses, 81% of whom did not establish behavioral health care subsequent to their initial hospitalization. The overall 90-day readmission rate of the sample was 41.7% with 80% of these individuals returning within 30 days.