Table of Contents
Abstract
The 30-item Nurses' Observation Scale for Inpatient Evaluation (NOSIE-30) is a specialized psychometric instrument designed to systematically capture and quantify the behavioral patterns of individuals receiving inpatient psychiatric care. Unlike traditional self-report measures, which can be confounded by a patient's acute symptomatology or lack of insight, this tool leverages the unique, continuous vantage point of psychiatric nursing staff. By embedding behavioral assessment into routine daily care—such as during meals, hygiene routines, and social interactions—the scale provides a highly ecologically valid picture of a patient's functioning without imposing additional testing burden.
Originally developed to track treatment responses in chronic psychiatric populations, the NOSIE-30 has become a cornerstone for evaluating clinical trajectories from admission to discharge. It captures both adaptive behaviors and pathological symptoms, offering a nuanced profile of a patient's current state. The translation and validation of this instrument into various languages, including Persian, represent a critical step in standardizing psychiatric care globally.
In the context of mental health promotion, the NOSIE-30 empowers nursing professionals to move beyond subjective clinical impressions toward rigorous, data-driven behavioral tracking. This capability is essential not only for tailoring individual treatment plans but also for mitigating risks associated with severe psychiatric episodes, such as aggression or severe withdrawal. By providing a reliable metric for observational data, the scale bridges the gap between everyday nursing care and evidence-based psychiatric assessment.
📊 Psychometric Scorecard
30
Multidimensional
0.85
📍 Iran
Authors
Purpose
The primary objective of the NOSIE-30 is to provide a standardized, scientifically rigorous framework for nurses to document the behavioral fluctuations of psychiatric inpatients. In many clinical settings, behavioral observations are recorded informally or through unstructured notes, which can introduce significant rater bias and hinder the systematic tracking of patient progress. This instrument addresses that critical gap by offering a structured metric that translates routine clinical observations into quantifiable data.
For researchers and clinicians, the availability of a validated observational scale is invaluable. It allows healthcare teams to objectively measure the efficacy of pharmacological and therapeutic interventions over time. Furthermore, in environments where patients may exhibit severe cognitive impairments, acute psychosis, or an inability to communicate verbally, the NOSIE-30 serves as a vital proxy for assessing clinical status, ensuring that treatment decisions are grounded in reliable behavioral evidence rather than subjective guesswork.
Construct
The NOSIE-30 measures the multidimensional construct of inpatient psychiatric behavior, encompassing both positive (adaptive) functioning and negative (maladaptive) symptomatology. The theoretical framework underlying the scale posits that a patient's clinical status can be accurately inferred through their overt actions and interactions within a structured milieu. Rather than relying on internal psychological states, the construct focuses on observable manifestations of mental illness.
This behavioral construct is operationalized through seven distinct subscales: social competence, social interest, personal neatness, irritability, manifest psychosis, retardation, and depression. Together, these dimensions create a comprehensive behavioral profile. The positive dimensions assess the patient's capacity for engagement and self-care, while the negative dimensions quantify the severity of active psychiatric disturbances. This dual approach allows clinicians to track not just the reduction of symptoms, but the simultaneous recovery of functional capacities.
Validity
The validation process for the Persian version of the NOSIE-30 demonstrated robust psychometric properties across multiple evaluative domains. Content validity was rigorously established through expert review, yielding an excellent item-level content validity index of 0.90 and a scale-level index of 0.92, indicating that the translated items accurately capture the intended behavioral constructs without cultural or linguistic distortion.
To establish criterion-related validity, researchers examined the concurrent relationship between the NOSIE-30 and the Global Assessment of Functioning (GAF) scale. The analysis revealed a strong positive correlation of 0.75 between the two measures. This substantial convergence provides compelling evidence that the observational data gathered by nurses using the NOSIE-30 closely aligns with standardized, clinician-rated assessments of overall psychological, social, and occupational functioning, thereby cementing its utility as a valid proxy for global psychiatric health.
Convergent & Discriminant Validation Correlations
| Reference Instrument | Correlation Coefficient (r) |
|---|---|
| Global Assessment of Functioning (GAF) | r=0.75 |
Reliability
Reliability testing of the instrument yielded highly satisfactory results, confirming its stability and consistency in a high-stakes clinical environment. The overall internal consistency of the scale was strong, with a Cronbach's alpha coefficient of 0.85. This value indicates that the 30 items function cohesively to measure the overarching construct of inpatient behavior, falling well within the optimal range for clinical assessment tools.
Given that the NOSIE-30 is an Observational measure, establishing inter-rater reliability is paramount. The study demonstrated excellent agreement among nursing staff, with intra-class correlation coefficients for the seven subscales ranging from 0.73 to 0.78, and an overall Cohen's kappa of 0.74. These metrics confirm that different nurses, when observing the same patient behaviors, will arrive at highly similar scores. This consistency is crucial for longitudinal tracking, ensuring that recorded behavioral changes reflect true clinical shifts rather than variations in observer judgment.
Factor Analysis
To evaluate the underlying structural dimensions of the Persian NOSIE-30, researchers employed exploratory factor analysis utilizing principal component extraction with varimax rotation. The analytical approach was designed to determine whether the original seven-factor structure of the scale held true in a different cultural and linguistic context. The suitability of the data for this type of dimension reduction was confirmed using standard preliminary checks, including the Kaiser-Meyer-Olkin measure and Bartlett's test of sphericity.
While the specific factor loadings and variance explained were not exhaustively detailed in the provided text, the methodology specified a rigorous retention criterion, requiring factor loadings to exceed 0.40 for an item to be considered a meaningful contributor to a specific domain. The use of a scree plot and eigenvalue examination further ensured that only statistically robust factors were retained, supporting the multidimensional nature of the scale and its division into distinct behavioral categories.
Subscales
| Subscale | Items | Description |
|---|---|---|
| Social competence | Measures the patient's ability to engage appropriately in social interactions and demonstrate interpersonal skills. | |
| Social interest | Assesses the patient's level of curiosity, engagement, and willingness to participate in the ward environment. | |
| Personal neatness | Evaluates the patient's attention to hygiene, grooming, and self-care routines. | |
| Irritability | Measures the frequency of agitation, frustration, and aggressive tendencies. | |
| Manifest psychosis | Captures observable symptoms of severe mental illness, such as hallucinations or delusional behavior. | |
| Retardation | Assesses psychomotor slowing, lethargy, and delayed responsiveness. | |
| Depression | Evaluates observable signs of low mood, tearfulness, and withdrawal. |
Instrument
| Test Type | Observational measure |
| Format | 30 items, 5-point Likert scale (0 = never to 5 = always) |
| Scoring | Items are scored from 0 to 5. Higher scores indicate higher frequency of the observed behavior. |
| Language | Persian |
| Population | Psychiatric patients |
| Age Group | Adults (>18 years) |
| Administration | Completed by psychiatric nurses based on Behavioral Observation |
30-item Nurses' Observation Scale for Inpatient Evaluation Items
Items are currently not available
The individual items of this scale are not publicly available. Researchers interested in using this instrument should contact the original authors directly to request the scale materials.
Sample
310 adult psychiatric inpatients (160 men, 150 women; mean age 33.7 ± 9.8 years) recruited via convenience sampling from a military educational hospital in Tehran, Iran. Diagnoses included schizophrenia (38.4%), major depression (32.9%), schizoaffective disorder (25.8%), bipolar disorder (21.3%), and PTSD (7.4%).
Cite This Paper
Masoud Sirati Nir, Robabe Khalili, Hosein Mahmoudi, Abbas Ebadi, Rahim Habibi (2020). 30-item Nurses' Observation Scale for Inpatient Evaluation. Journal of education and health promotion. https://doi.org/10.4103/jehp.jehp_156_20
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Cite this article
Mohammed looti (2026). 30-item Nurses’ Observation Scale for Inpatient Evaluation. PSYCHOLOGICAL SCALES. Retrieved from https://scales.arabpsychology.com/s/30-item-nurses-observation-scale-for-inpatient-evaluation/
Mohammed looti. "30-item Nurses’ Observation Scale for Inpatient Evaluation." PSYCHOLOGICAL SCALES, 14 Aug. 2026, https://scales.arabpsychology.com/s/30-item-nurses-observation-scale-for-inpatient-evaluation/.
Mohammed looti. "30-item Nurses’ Observation Scale for Inpatient Evaluation." PSYCHOLOGICAL SCALES, 2026. https://scales.arabpsychology.com/s/30-item-nurses-observation-scale-for-inpatient-evaluation/.
Mohammed looti (2026) '30-item Nurses’ Observation Scale for Inpatient Evaluation', PSYCHOLOGICAL SCALES. Available at: https://scales.arabpsychology.com/s/30-item-nurses-observation-scale-for-inpatient-evaluation/.
[1] Mohammed looti, "30-item Nurses’ Observation Scale for Inpatient Evaluation," PSYCHOLOGICAL SCALES, vol. X, no. Y, ص Z-Z, August, 2026.
Mohammed looti. 30-item Nurses’ Observation Scale for Inpatient Evaluation. PSYCHOLOGICAL SCALES. 2026;vol(issue):pages.