Stroke-Adapted Sickness Impact Profile

Abstract

The Stroke-Adapted Sickness Impact Profile (SA-SIP30) is a specialized, abbreviated version of the widely recognized Sickness Impact Profile (SIP), specifically designed for administration to individuals who have experienced a Cerebrovascular Accident (CVA), commonly known as a stroke. This instrument is crucial for assessing health-related quality of life (HRQoL) following a stroke event.

The SA-SIP30 consists of 30 distinct items presented as statements concerning behavioral limitations and functional restrictions, requiring the respondent to affirm or deny their applicability. It effectively captures data across eight of the original twelve domains of physical and psychosocial functioning measured by the full SIP, making it a focused and efficient measure for this specific patient population.

Keywords

SA-SIP30, Stroke-Adapted Sickness Impact Profile, Sickness Impact Profile, Stroke, CVA, Health-Related Quality of Life, HRQoL, functional limitations, psychosocial functioning, questionnaire.

Authors

van Straten A

Purpose

The primary purpose of the SA-SIP30 is to quantify the level of functional and behavioral limitations experienced by patients following a stroke. By focusing on 30 core items derived from the comprehensive SIP, the scale provides a rapid yet robust measure of the impact of the illness on daily life and overall well-being.

The instrument serves as a critical tool in clinical settings and research for monitoring recovery trajectories, evaluating the effectiveness of rehabilitation interventions, and determining the extent to which a CVA affects the patient’s capacity for independent living and social interaction. It is particularly useful for measuring outcomes related to physical activities, self-care, and mental functions.

Construct

The SA-SIP30 measures the construct of health-related quality of life (HRQoL) as manifested through observable behavioral changes and functional restrictions resulting from sickness. It operationalizes this construct across key domains of human activity and interaction relevant to stroke recovery.

The scale specifically targets eight crucial domains of functioning, encompassing both physical dimensions (such as mobility and self-care) and psychosocial dimensions (such as communication and interpersonal relationships). The 30 items reflect concrete statements about limitations, ensuring that the measurement is grounded in observable patient behavior rather than purely subjective emotional states.

Validity

As an adaptation of the established Sickness Impact Profile, the SA-SIP30 benefits from the extensive construct and content validity demonstrated by the original instrument. Specific validation studies for the SA-SIP30, particularly those focusing on stroke populations, typically confirm its discriminant validity—the ability to distinguish between different levels of stroke severity and recovery stages.

Studies conducted upon its development by van Straten (1997) ensured the content validity of the 30 selected items, confirming that they are the most relevant indicators of functional impairment specific to CVA survivors. Further research supports its utility as a valid measure of functional outcome in rehabilitation trials.

Reliability

The reliability of the SA-SIP30 is generally assessed through measures of internal consistency and test-retest reliability. High internal consistency, often reported using Cronbach’s alpha, is expected given that the items are closely related indicators of overall functional limitation caused by the stroke across the eight measured domains.

Test-retest reliability is essential to ensure that the scale produces stable results over short periods, assuming the patient’s underlying health status remains unchanged. The SA-SIP30 is typically considered a reliable instrument for assessing chronic functional status following the acute phase of a stroke, making it suitable for longitudinal studies.

Factor Analysis

While the full SIP is structured around 12 distinct functional categories, the SA-SIP30 is designed to capture the most critical dimensions through 8 primary domains. Factor analysis of the SA-SIP30 data typically confirms a multi-dimensional structure, reflecting the separate but interconnected physical and psychosocial components of the impact of stroke.

The factor structure generally aligns with the two overarching factors identified in the original SIP: the Physical dimension (including Mobility, Body Care, and Household Management) and the Psychosocial dimension (including Communication, Social Interaction, and Emotional Behavior). These factors allow for nuanced scoring reflecting the varied deficits experienced by CVA patients.

Instrument

Test Type: Questionnaire (Patient self-report)

Format: The instrument consists of 30 statements regarding behavioral limitations. Respondents indicate whether the statement applies to them or not (typically a dichotomous response format).

Language Available: Originally developed and validated in Dutch (as per the source), with likely translations available for widespread clinical use.

Population Group: Individuals recovering from or living with the aftermath of a stroke (CVA).

Age Group: Adults and Elderly.

Population Details: Specifically targets patients diagnosed with a Cerebrovascular Accident (CVA) or related conditions affecting the Nervous System and senses. Domains assessed include Activities, Communication, Household, Mental functions, Interpersonal interactions and relationships, and Self-care.

Test Methodology: The SA-SIP30 is a behavioral impact profile used to assess the change in health status and Health-Related Quality of Life (HRQoL) following a major medical event.

The original PDF explanation form can be downloaded here: SA-SIP30 Toelichtingsformulier (Explanation Form).

The original PDF instrument can be downloaded here: SA-SIP30 Meetinstrument (Measurement Instrument).

Keywords

CVA recovery, functional assessment, rehabilitation outcome, psychosocial function, self-report, 30-item scale, van Straten, 1997, functional status, physical functioning.

Authors

Author ORCID Identifier: Information not provided in source.

Affiliation Email addresses: Information not provided in source.

Correspondence Address: Information not provided in source.

Permissions & Fee and Test Year

The instrument was developed by van Straten A in 1997. Specific details regarding current licensing, permissions required for clinical use, and applicable fees should be sought directly from the original author or the publishing institution that holds the copyright for the Sickness Impact Profile adaptations. Users should confirm copyright compliance before administration.

Reference’s

Primary Reference:

• van Straten, A. (1997). Development and validation of a stroke-adapted version of the Sickness Impact Profile (SA-SIP30).

Contextual Reference:

• Bergner, M., Bobbitt, R. A., Carter, W. B., & Gilson, B. S. (1981). The Sickness Impact Profile: development and final revision of a health status measure. Medical care, 19(8), 787-805.

Items of the Stroke-Adapted Sickness Impact Profile

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

The original source content confirms that the SA-SIP30 contains 30 items in the form of stellingen over (gedrags)beperkingen (statements about behavioral limitations), but the specific list of these 30 items was not provided in the supplied data.