Job Stressor Scale for Specialty Nurses

Authors

Purpose

While numerous tools exist to measure general occupational stress, such as the Perceived Stress Scale or the classic Nursing Stress Scale, these legacy instruments often lack the specificity required for modern advanced practice roles. specialty nurses operate at a higher level of clinical autonomy and administrative responsibility, meaning their stress profiles differ significantly from those of general ward Nurses. This scale was explicitly engineered to capture these nuanced occupational demands.

By providing a tailored measurement tool, the authors enable researchers and hospital managers to move beyond generic stress assessments and accurately diagnose the specific organizational and clinical pain points affecting this critical segment of the healthcare workforce. This precise measurement is the first necessary step toward developing evidence-based interventions to support specialty nurses.

Construct

The theoretical foundation of this instrument is anchored in Robbins' stress model, a well-established organizational behavior framework that conceptualizes occupational stress as a product of environmental, organizational, and individual factors. Rather than viewing stress as a monolithic experience, this model allows for a granular examination of how different workplace stimuli interact to produce psychological tension.

The scale operationalizes this framework through four distinct dimensions: specialized nursing and work, workload and time allocation, patient care, and work resources and environment. These dimensions reflect the complex reality of the specialty nurse's role, capturing everything from the macro-level environmental constraints, like resource scarcity, to the micro-level organizational demands, such as time management and complex patient interactions.

Validity

The psychometric validation of this instrument demonstrates exceptional rigor, particularly in its content and structural validity. During the development phase, the researchers achieved a highly robust Scale-Level Content Validity Index of 0.980, with individual Item-Level Content Validity Indices ranging from 0.790 to 1.000. These figures indicate near-unanimous agreement among the Delphi panel experts that the items accurately represent the target construct.

Furthermore, the structural integrity of the scale was rigorously tested using a split-sample approach. The exploratory factor analysis successfully extracted a four-factor solution, while the subsequent confirmatory factor analysis on a separate sample corroborated this multidimensional structure, demonstrating a strong model fit. This dual-analysis approach provides compelling evidence that the scale's theoretical dimensions accurately map onto the empirical data.

Reliability

Reliability metrics for the scale are outstanding, indicating a high degree of internal consistency and temporal stability. The overall instrument yielded a Cronbach's alpha of 0.958, which is exceptionally high and suggests that the 27 items are strongly interrelated in measuring the overarching construct of job stress.

Beyond internal consistency, the researchers established the scale's stability over time through a two-week test-retest protocol, achieving a correlation coefficient of 0.946. Additionally, a split-half reliability coefficient of 0.868 further supports the instrument's precision. These comprehensive reliability indicators confirm that the scale is not only internally cohesive but also capable of producing consistent measurements across different time points, making it a highly dependable tool for longitudinal occupational health studies.

Factor Analysis

The factor structure was evaluated using a robust cross-validation strategy, dividing the large participant pool into two independent samples. The exploratory factor analysis conducted on the first half of the data revealed a clean four-factor solution that accounted for an impressive 69.10% of the total variance. This high percentage of explained variance suggests that the extracted factors capture the vast majority of the stress construct's underlying dimensionality.

Following the exploratory phase, a confirmatory factor analysis was executed on the second half of the sample to verify the proposed structure. The results confirmed that the 27 items loaded appropriately onto their respective four theoretical domains. This seamless transition from exploratory extraction to confirmatory validation underscores the stability of the scale's architecture and its alignment with the foundational theoretical framework.

Subscales

Instrument

Figures

Job Stressor Scale for Specialty Nurses Items

Sample

The main validation sample consisted of 552 specialty nurses (54 males, 498 females) aged 24 to 48 years. Participants were recruited via an internal communication system at a target hospital using an online survey platform. The sample was split evenly, with 276 participants used for exploratory factor analysis and 276 for confirmatory factor analysis. A subset of 30 participants was randomly selected for test-retest reliability evaluation.