Stoma Quality of Life Instrument

Abstract

The Stoma Quality-of-Life instrument (Stoma QOL) is a specialized questionnaire designed to quantitatively assess the subjective quality of life experienced by individuals living with a stoma. The scale focuses on critical areas of psychological and social adjustment following ostomy surgery, including concerns related to sleep disturbances, difficulties in intimate relationships, and challenges in maintaining relationships with family, close friends, and broader social circles.

This instrument is crucial for clinical assessment, providing detailed insight into a patient’s adaptation and perceived well-being across various domains of social functioning. A fundamental principle of the Stoma QOL is that higher derived scores indicate a better perceived quality of life and successful adjustment to the physical change.

Keywords

Stoma, Ostomy, Quality of Life, QOL, Adjustment, Social Functioning, Interpersonal Relationships, Gastrointestinal Disorders, Questionnaire, Psychometric properties.

Authors

Prieto L, Thorsen H, Juul K (2005); Dutch Version: Dol L (2008)

Purpose

The primary purpose of the Stoma QOL instrument is to provide a standardized, patient-reported measure of how the presence of an artificial opening (a stoma, such as a colostomy, ileostomy, or urostomy) impacts the individual’s daily life and psychological well-being. It serves as a crucial tool for clinicians and researchers to evaluate the effectiveness of surgical interventions, post-operative care, and psychological support programs aimed at improving patient outcomes.

The instrument is intended for use in clinical settings to monitor individual patient progress over time and in research settings to compare outcomes across different treatment modalities or patient populations. By quantifying specific areas of concern—such as social interaction and intimate life—the scale aids in targeting interventions precisely where the patient experiences the greatest deficit in their quality of life.

Construct

The Stoma QOL instrument measures the multidimensional construct of health-related quality of life (HRQOL) specifically within the context of living with an ostomy. This HRQOL construct is defined by the domains that are most frequently disrupted by the physical and psychological consequences of stoma formation, covering functions related to mental health and social participation.

Key domains measured within the scale include:

• Concerns regarding sleep and physical comfort.
• Impact on intimate and sexual relationships.
• Quality and maintenance of relationships with immediate family members and close friends.
• Adjustment and participation in broader social and community life, including economic and educational functions.

The resulting score provides a holistic measure of the patient’s adaptation across these essential social and psychological dimensions following surgery related to the digestive system and abdominal organs.

Validity

Specific details regarding the initial validation studies (e.g., construct validity, criterion validity) for the Stoma QOL instrument by Prieto, Thorsen, and Juul (2005) are not fully detailed in the provided source description. However, as a dedicated quality-of-life measure, it is expected that the developers established strong face validity and content validity by ensuring the items directly address the key challenges faced by ostomy patients.

Typically, validity for such instruments is demonstrated through correlation with established generic Quality of Life scales (convergent validity) and the ability to differentiate between patient groups known to have different levels of adjustment (known-groups validity). The development of the Dutch version by Dol (2008) would have required rigorous cross-cultural validation procedures to ensure linguistic and conceptual equivalence, confirming the scale’s psychometric properties across diverse populations.

Reliability

The reliability of the Stoma QOL instrument refers to its consistency and stability across repeated measurements. While the source material does not specify the reliability coefficients, standard scale development procedures mandate the assessment of internal consistency (usually measured via Cronbach’s Alpha) and test-retest reliability.

A high level of internal consistency is necessary to ensure that the items within each domain are measuring the same underlying concept. Furthermore, adequate test-retest reliability confirms that the instrument yields stable results over short periods, assuming the patient’s underlying clinical status has not changed, reinforcing its utility as a reliable clinical monitoring tool.

Factor Analysis

Factor analysis is a statistical technique used to confirm the underlying structure of a questionnaire. Although the specific results are not provided, the scale’s focus on distinct areas—sleep, intimate relations, family relations, and general social relations—suggests it likely possesses a multi-factor structure representing different facets of psychosocial adjustment.

Exploratory or Confirmatory Factor Analysis (EFA or CFA) would have been utilized during development to demonstrate that the items load onto the intended theoretical dimensions. This ensures that the distinct subscale scores (if applicable) are meaningful and separable, providing nuanced information beyond a single total score regarding the patient’s adaptation to having a stoma.

Instrument

Test Type: Questionnaire (Self-Report Instrument)

Format: Likert-type scale or similar standardized response format designed for patient self-administration.

Language Available: Original Danish/English (inferred); Dutch (specifically mentioned).

Population Group: Clinical population diagnosed with conditions requiring ostomy formation (related to digestive disorders).

Age Group: Children, Adults, Elderly.

Population Details: Individuals undergoing or living with a stoma (colostomy, ileostomy, urostomy) due to digestive or related conditions affecting the thorax, abdomen, or organs. The scale assesses general participation and interpersonal interactions.

Test Methodology: Standardized psychological assessment tool utilizing summated ratings. Higher total scores indicate a better perceived quality of life and successful adaptation.

Keywords

HRQOL, Ostomy care, Adaptation, Psychosocial adjustment, Bowel disease, Psychometric properties, Social participation, Clinical assessment, Abdominal surgery.

Authors

Author ORCID Identifier: N/A (Information not provided in source)

Affiliation Email addresses: N/A (Information not provided in source)

Correspondence Address: N/A (Information not provided in source)

Permissions & Fee and Test Year

The original conceptualization and publication of the Stoma QOL instrument occurred in 2005 by Prieto L, Thorsen H, and Juul K. The specific Dutch translation and validation was completed by Dol L in 2008.

Information regarding current licensing permissions or usage fees is not contained within the source material. Researchers and clinicians interested in utilizing the scale should contact the primary authors or their affiliated institutions for formal permission and licensing requirements.

The original Explanation Form (Toelichtingsformulier) PDF can be downloaded here: https://scales.arabpsychology.com/wp-content/uploads/instrumenten/Stoma-QOL-form.pdf

Reference’s

The primary references for the Stoma QOL instrument include the original development paper and the subsequent validation of the Dutch version:

• Prieto L, Thorsen H, Juul K. (2005). Development and validation of the Stoma Quality-of-Life instrument.
• Dol L. (2008). Dutch translation and validation of the Stoma Quality-of-Life instrument.

Items of the Stoma Quality-of-Life instrument

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

The source content did not provide the specific item text of the questionnaire, but rather the domains covered. These domains, listed below in their original language, represent the content assessed by the Stoma QOL:

• Bezorgdheid over slapen
• Bezorgdheid over intieme relaties
• Bezorgdheid over relaties met familie en naaste vrienden
• Bezorgdheid over relaties met andere mensen dan familie en naaste vrienden

The original Measurement Instrument (Meetinstrument) PDF, which contains the items, can be downloaded here: https://scales.arabpsychology.com/wp-content/uploads/instrumenten/Stoma-QOL-meetinstr.pdf