Global functioning and most mental health parameters significantly improved during inpatient psychiatric treatment, with clinician-rated depression severity being consistently the strongest predictor of global functioning, and a halo effect suggested by the strong association between clinician-rated measures.
Key Findings
Results
Global functioning and most mental health parameters significantly improved from admission to discharge in inpatient psychiatric care.
Sample consisted of 561 inpatients at a psychiatric clinic assessed at both admission and discharge.
Improvements were statistically significant with p values ranging from <0.001 to 0.019.
Effect sizes (partial η²) ranged from 0.02 to 0.14 across the improved parameters.
Sleep quality was the exception, showing no significant improvement.
Parameters assessed included global functioning, depression severity (clinician- and self-rated), sleep quality, quality of life, life satisfaction, and mood level.
Results
Clinician-rated depression severity was consistently the strongest predictor of global functioning at admission, discharge, and over time.
Standardized regression coefficients (β) ranged from -0.56 to -0.47 across all time points.
All associations were significant at p < 0.001.
The negative direction indicates that higher depression severity was associated with lower global functioning.
This relationship held at admission, at discharge, and when examining change over time.
Multiple linear regressions were used to explore predictors of global functioning.
Results
Life satisfaction at admission predicted global functioning improvement over the course of inpatient treatment.
Life satisfaction at admission was a significant predictor of global functioning improvement (β = 0.27, p = 0.038).
This finding emerged from multiple linear regression analyses predicting change in global functioning.
The positive coefficient indicates that higher life satisfaction at admission was associated with greater improvement in global functioning.
Results
Lower sleep quality at admission was paradoxically associated with higher global functioning at admission.
Sleep quality showed a positive association with global functioning at admission (β = 0.16, p = 0.041).
The direction of this association suggests that poorer sleep quality was linked to better global functioning scores at admission.
Sleep quality did not show significant improvement from admission to discharge, unlike most other mental health parameters.
Discussion
The strong association between clinician-rated global functioning and clinician-rated depression severity suggests a halo effect in clinical assessments.
Both global functioning and depression severity were clinician-rated measures, and their strong correlation (β = -0.56 to -0.47) raises concerns about shared method variance.
The authors interpret this pattern as indicative of a halo effect, where clinicians' overall impressions influence ratings across multiple measures.
The authors propose that the broad scope of global functioning measures may limit sensitivity to specific mental health changes.
A diagnostic and visualized integration of both clinician-rated and self-rated measures is proposed to improve reliability.
Methods
ANCOVAs were used to assess mean changes in mental health parameters from admission to discharge in 561 inpatients.
The study employed a pre-post design comparing assessments at admission and discharge.
ANCOVAs assessed mean changes while controlling for relevant covariates.
Multiple linear regressions explored predictors of global functioning at admission, discharge, and over time.
The sample of 561 inpatients was drawn from a psychiatric clinic.
What This Means
This research examined how overall functioning and various mental health measures change during a hospital stay in a psychiatric clinic, and what factors predict those changes. The study followed 561 patients, measuring their overall functioning, depression, sleep quality, quality of life, life satisfaction, and mood when they arrived and when they left the hospital. Most of these measures improved significantly during treatment, but sleep quality was a notable exception, showing no meaningful change by discharge.
One of the most striking findings was that how severely a clinician rated a patient's depression was by far the strongest factor linked to the patient's overall functioning scores — both at the start and end of their stay. Because both of these measures were rated by clinicians, the researchers suggest this strong connection may partly reflect a 'halo effect,' meaning that a clinician's general impression of a patient influences all of their ratings in the same direction, rather than each measure independently capturing something different. Interestingly, patients who reported higher life satisfaction when they arrived tended to show greater improvement in overall functioning by discharge.
This research suggests that relying solely on clinician-rated measures of overall functioning may not fully capture the range of mental health changes patients experience during inpatient treatment. The authors recommend combining clinician ratings with patients' own self-reported measures, and presenting these together in a visual format, to give a more complete and reliable picture of treatment progress. This could be especially important for areas like sleep, which improved less than other aspects of mental health during hospitalization.
Finner A, Lenger M, Dalkner N, Fellendorf F, Kratzer L, Fleischmann E, et al.. (2026). Global Functioning and Mental Health Parameters: Examining Interplay and Improvements in Inpatient Psychiatry.. International journal of methods in psychiatric research. https://doi.org/10.1002/mpr.70062