Photograph Series of Daily Activities – Short Electronic Version

Abstract

The Photograph Series of Daily Activities-Short electronic version (Phoda-SeV1) is an efficient, digitized adaptation of the original PHODA2 scale (Photograph Series of Daily Activities). This instrument is specifically designed to quantify the perceived threat value or danger associated with a range of common daily physical activities. By utilizing standardized photographs, the Phoda-SeV1 facilitates the creation of a precise, individualized anxiety hierarchy. This hierarchy is a crucial clinical tool used primarily in the assessment and treatment planning for patients exhibiting high levels of kinesiophobia (fear of movement), often observed in chronic pain populations.

Keywords

Kinesiophobia, fear avoidance, threat appraisal, pain assessment, chronic pain, electronic assessment, PHODA, anxiety hierarchy, mental functions, personal factors

Authors

Leeuw M, et al. (2007)

Purpose

The primary purpose of the Phoda-SeV1 is to provide a rapid and clinically relevant assessment of activity-related fear in patients suffering from pain-related movement avoidance. While the original PHODA scale was comprehensive, the electronic short version was developed to minimize administration time while retaining robust psychometric properties, making it highly suitable for busy clinical settings and longitudinal tracking of treatment progress.

By quantifying the subjective threat associated with specific functional movements, the scale helps clinicians understand the patient’s cognitive appraisal of their physical capabilities. This information is foundational for guiding exposure-based therapies, which systematically address the activities the patient perceives as most threatening, thereby reducing fear-avoidance behaviors.

Construct

The Phoda-SeV1 measures the psychological construct of perceived threat appraisal related to physical activities, which is central to the Fear-Avoidance Model of chronic pain. This model posits that pain leads to fear of movement (kinesiophobia), resulting in avoidance behaviors, which subsequently lead to disability and chronic pain maintenance.

The scale operationalizes this construct by presenting visual stimuli (photographs) of various daily activities. The patient rates the perceived danger associated with performing these movements, effectively measuring the intensity of their specific movement fears, rather than just general pain intensity or disability. The resulting scores generate a direct measure of the patient’s personalized fear hierarchy.

Validity

Studies involving the Phoda-SeV1 and its predecessor, PHODA2, have demonstrated strong evidence of validity. Concurrent validity is typically established through significant correlations with established measures of pain-related fear, such as the Tampa Scale of Kinesiophobia (TSK) and the Pain Catastrophizing Scale (PCS).

Furthermore, the scale exhibits discriminant validity, showing that it measures a distinct construct—specific activity threat appraisal—separate from general depression or anxiety measures. Construct validity is supported by its ability to differentiate between individuals with high pain-related disability and those with lower disability levels, consistent with predictions derived from the Fear-Avoidance Model.

Reliability

The reliability of the Phoda-SeV1 is generally reported as high, essential for a clinical assessment tool. Internal consistency, typically assessed using Cronbach’s alpha, is strong, indicating that the items within the scale consistently measure the same underlying construct (perceived threat).

Test-retest reliability is also robust, confirming that the scores remain stable over time in patients whose clinical status has not significantly changed. This stability ensures that changes observed in the scores over the course of treatment are attributable to therapeutic intervention rather than measurement error.

Factor Analysis

Factor analytic studies, often performed on the broader PHODA instrument set, typically support a highly consistent underlying structure. For the Phoda-SeV1, Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) usually demonstrate that the instrument is largely unidimensional.

This strong single factor accounts for a significant portion of the variance and is interpreted as the overarching concept of perceived movement threat. This finding reinforces the scale’s utility in providing a singular, comprehensive score representing the severity of kinesiophobia across different daily activities.

Instrument

Test Type: Instrumental / Pictorial Assessment

Format: Shortened Electronic Version (Computer-based or Tablet administration)

Language Available: Primarily Dutch (Original publication), English, and potentially other languages depending on subsequent validation studies.

Population Group: Patients with Psychological disorders related to chronic pain and movement fear.

Age Group: Adults and Older adults.

Population Details: Used extensively in chronic musculoskeletal pain, particularly back pain, where kinesiophobia is prevalent.

Test Methodology: Respondents view a series of standardized photographs depicting daily activities and are asked to rate how much danger or threat they perceive in performing that activity, often using a visual analogue scale or Likert-type response format.

Keywords

Pain management, fear appraisal, psychological assessment, activity avoidance, electronic scale, PHODA-SeV1, rehabilitation, psychometrics

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 Phoda-SeV1 was initially published in 2007 by Leeuw M, et al. The specific fee structure and required permissions for clinical or research use depend on the current copyright holder, typically associated with the institution of the primary authors. Users are advised to contact the original researchers or relevant psychological assessment bodies for licensing details. The original explanatory document (Toelichtingsformulier) can be downloaded here: Toelichtingsformulier PDF.

Reference’s

• Leeuw, M., Goossens, M. E. J. B., van Breukelen, G. J. P., & Vlaeyen, J. W. S. (2007). The Photograph Series of Daily Activities-Short electronic version (Phoda-SeV): A reliable and valid instrument to assess perceived harmfulness of activities in patients with chronic low back pain. Pain.
• Vlaeyen, J. W. S., & Linton, S. J. (2000). Fear-avoidance and its consequences in chronic musculoskeletal pain: A state of the art. Pain.
• Original source documentation provided by Leeuw M, et al. (2007).

Items of the Photograph Series of Daily Activities-Short electronic version

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

Item information was not provided in the source content. The Phoda-SeV1 typically consists of a subset of photographs derived from the longer PHODA2, depicting activities ranging from low-threat (e.g., sitting) to high-threat (e.g., bending, lifting heavy objects).