Parental Stressor Scale: Pediatric Intensive Care Unit (PSS: PICU)

Abstract

The Parental Stressor Scale: Pediatric Intensive Care Unit (PSS: PICU) is a specialized psychometric instrument designed to systematically measure the level of subjective parental stress experienced by caregivers whose children are hospitalized in a Pediatric Intensive Care Unit (PICU). Developed by Carter and Miles in the early 1980s, the scale identifies specific environmental, procedural, staff-related, and child-related factors within the critical care setting that parents perceive as stressful.

This scale is crucial for nurses and healthcare professionals to understand and mitigate the psychological burden placed on families during a child’s critical illness. It captures stressors across multiple dimensions, providing a comprehensive profile of the family’s experience in the high-acuity environment. Respondents utilize a 6-point Likert scale to rate the stressfulness of each factor.

Keywords

Parental Stressor Scale, PSS: PICU, Pediatric Intensive Care Unit, Critical Care, Parental stress, Stress measurement, Child hospitalization, Family-centered care.

Authors

Miles, M. S., Carter, M. C.

Purpose

The primary purpose of the PSS: PICU is to quantify the intensity and sources of stress experienced by parents while their child is receiving critical care. By identifying specific environmental and interpersonal factors contributing to distress, the scale allows healthcare teams to tailor interventions aimed at reducing parental anxiety and improving family adaptation during the crisis of critical illness.

This instrument serves as both a clinical assessment tool and a valuable research instrument, enabling studies on the impact of the PICU environment on family well-being, coping mechanisms, and the effectiveness of support programs. Its use supports the principles of family-centered care by highlighting the caregiver’s perspective on the hospitalization experience.

Construct

The PSS: PICU measures the psychological construct of situational stress specific to the critical care environment. This construct is operationalized through seven core subscales, which categorize stressors into distinct observable and relational domains. Stress is defined here not merely as an external event, but as the parent’s subjective appraisal of how demanding or threatening that event is within the PICU setting.

The stress factors covered range from sensory overload (Sights and Sounds) and threats to the child’s physical integrity (Procedures, Appearance) to disruptions of the normal parent-child relationship (Parental Roles) and communication barriers with staff (Professional Staff Communication). These domains allow for a nuanced understanding of the multifaceted nature of parental stress in the critical care context.

Validity

Initial validation studies conducted by Carter and Miles demonstrated strong content validity, ensuring that the items adequately sampled the domain of PICU-related stressors as identified through extensive qualitative research with parents. Subsequent research across multiple institutions has supported the scale’s construct validity through confirmatory factor analysis, confirming the hypothesized factor structure.

Evidence for concurrent validity has often been demonstrated through correlations between PSS: PICU scores and other established measures of anxiety, depression, and psychological distress in parents of critically ill children. Higher PSS: PICU scores consistently correlate with poorer psychological outcomes, confirming that the scale accurately measures clinically significant stress levels related to the intensive care experience.

Reliability

The PSS: PICU consistently exhibits high internal consistency across diverse samples. Studies typically report coefficient Alpha scores (Cronbach’s Alpha) for the total scale ranging consistently above 0.90, indicating excellent reliability. The individual subscales also generally demonstrate acceptable to good internal consistency, often ranging between 0.70 and 0.90, suggesting that items within each factor are measuring a unified aspect of stress perception.

Given the nature of acute hospitalization, test-retest reliability is typically assessed over short intervals (e.g., 24 to 48 hours) and has shown moderate stability, confirming that the instrument provides consistent measurement of the perceived stressors during the critical phase of hospitalization.

Factor Analysis

Early exploratory factor analysis (EFA) performed on the PSS: PICU data typically yields a multi-factor structure, supporting the theoretical domains defined by the authors. The most commonly confirmed factors, which account for the majority of the variance, include ‘Staff Communication,’ ‘Child’s Appearance and Behavior,’ ‘Sights and Sounds,’ ‘Procedures,’ and ‘Parental Role Alterations.’

The confirmation of this factor structure is essential, as it validates the scale’s ability to differentiate between distinct sources of stress. Recognizing these separate factors is critical for clinical application, allowing healthcare providers to implement targeted interventions—for instance, improving communication protocols for parents scoring high on the communication factor, or providing psychological support for parents distressed by their altered parental role.

Instrument

Test Type: Self-report psychological scale.

Format: Multi-item scale utilizing a 6-point Likert scale response format, ranging from 0 (Not experienced) or 1 (Not stressful) to 5 (Extremely stressful).

Language Available: Primarily English, with validated translations and adaptations available in numerous languages (e.g., Spanish, Chinese, Turkish).

Population Group: Parents or primary caregivers.

Age Group: Adults (Parents/Caregivers) of pediatric patients.

Population Details: Specifically targets parents whose children are currently hospitalized in a Pediatric Intensive Care Unit (PICU).

Test Methodology: Respondents rate each item based on two dimensions: (1) whether they experienced the stressor (often binary: experienced/not experienced) and (2) how stressful they found that item, using the scale where 0 = Not experienced, 1 = Not stressful, 2 = Minimally stressful, 3 = Moderately stressful, 4 = Very stressful, and 5 = Extremely stressful.

Keywords

Carter and Miles, PICU stress, Parental coping, Child critical illness, Stress measurement, Intensive care environment, Nursing research, Family support.

Authors

Author ORCID Identifier: Not specified in source material.

Affiliation Email addresses: Not specified in source material.

Correspondence Address: Refer to original publications authored by Carter and Miles (1980s).

Permissions & Fee and Test Year

The scale was initially published in abstract form in 1982 and formally detailed in subsequent publications in 1983 and 1989. The PSS: PICU is widely utilized in academic and clinical research. While generally available for academic use, formal clinical adoption or commercial use may require permission from the original authors or copyright holders.

The original instrument document can be found here: https://etd.ohiolink.edu/rws_etd/document/get/case1152694720/inline.

Reference’s

• Carter‚ M. C.‚ & Miles‚ M. S. (1982). Parental stressor scale: Pediatric ICU (Abstract). Nursing Research‚ 31(121).
• Carter‚ M. C.‚ & Miles‚ M. S. (1983). Parental Stressor Scale: Pediatric Intensive Care Unit.
• Carter‚ M. C.‚ & Miles‚ M. S. (1989). The Parental Stressor Scale: Pediatric Intensive Care Unit. Maternal Child Nursing Journal‚ 18(3)‚ 187-198.
• Huckabay‚ L. M.‚ & Tilem-Kessler‚ D. (1999). Patterns of parental stress in PICU emergency admission. Dimensions of Critical Care Nursing‚ 18(2)‚ 36-42.
• Saied‚ Hala. (2006). Stress‚ Coping‚ Social Support and Adjustment among Families Of CHD Children in PICU after Heart Surgery. Case Western Reserve University. Doctoral Dissertation.

Items of the Parental Stressor Scale: Pediatric Intensive care Unit (PSS: PICU)

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

Below is a list of items that might describe your Child’s Appearance

1. Puffiness of my child
2. Color changes in my child (Pale‚ blue or yellow)
3. Child appearing Cold

Below is a list of Sights and Sounds in an intensive care unit.

1. Seeing the heart on the monitors
2. The sound of monitors and equipment
3. The other sick children in the room
4. The sudden sounds of monitor alarms

Below is a list of Procedures that may have been done to your child.

1. Tubes in my child
2. Suctioning
3. Putting needles in my child for fluids‚ procedures or tests
4. Making my child cough and deep breath/pounding and clapping on my child’s chest
5. Injections/ shots
6. Bruises‚ cuts‚ incisions on my child

Below is a list of items that relate to how Professional staff (doctors and nurses) may Communicate with you about your child’s illness.

1. Explaining things too fast
2. Using words I don’t understand
3. Telling me different (conflicting) things about my child’s condition
4. Not telling me what is definitely wrong with my child
5. Not talking to me enough

Below is a list of Behaviors and emotional responses that your child may have exhibited while in the intensive care unit.

1. Confusion
2. Rebellious or uncooperative behavior
3. Crying or whining
4. Demanding
5. Acting or looking as if in pain
6. Restlessness
7. Inability to talk or cry
8. Fright
9. Anger
10. Sadness or Depression

Below is a list of Behaviors of the professional staff (doctors and nurses) that you may have observed.

1. Joking‚ laughing‚ or talking loudly
2. Not talking to me enough
3. Too many different people (doctors‚ nurses‚ staff) talking to me
4. Not telling me names or who they are

These items related to Parental Roles

1. Not taking care of my child my self
2. Not being able to visit my child when I wanted
3. Not being able to be with my crying child
4. Not being able to hold my child
5. Using the same rating scale‚ how stressful‚ in general‚ has the total intensive care unit experience been for you?

0 = Not experienced‚ 1 = Not stressful‚ 2 = Minimally stressful‚ 3 = Moderately stressful‚ 4 = Very stressful‚ 5 = Extremely stressful