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Validation of the Survey of Sleep Quality in the Pediatric Intensive Care Unit (SSqPICU).
Journal of Clinical Sleep Medicine : JCSM : Official Publication of the American Academy of Sleep Medicine 2024 March 9
STUDY OBJECTIVES: Observational data suggest pediatric intensive care unit-related sleep and circadian disruption (PICU-SCD) affects many critically ill children. Multi-center trials exploring PICU-SCD have been impractical as measuring sleep in this setting is challenging. This study validates a questionnaire for caregivers to describe children's sleep in the PICU.
METHODS: This prospective, multi-center, case-control study enrolled caregivers of children in four PICUs or in a hospital-based sleep lab (controls). Survey items were compiled from validated adult ICU and pediatric in- and outpatient sleep questionnaires. Control responses were compared to polysomnography to determine accuracy. A score was calculated by summing the level of disruption of sleep timing, duration, efficiency, quality, and daytime sleepiness and irritability.
RESULTS: In 152 PICU and 61 sleep lab caregivers, sleep survey items had acceptable internal reliability (α=0.75) and reproducibility on re-test surveys (ICC>0.600). Caregivers could not assess sleep of sedated children. Factor analysis identified three sub-scales of PICU-SCD. Control parents had good agreement with polysomnography sleep onset time (κ=0.823) and sleep onset latency (κ=0.707). There was a strong correlation between sleep scores derived by parental reporting to those by polysomnography (r=0.844, p<0.001). Scores had a linear association with caregiver-reported child sleep quality. There were no site-specific differences in sleep quality. Nearly all respondents found the survey easy to understand and of appropriate length.
CONCLUSIONS: The SSqPICU provides a reliable, accurate description of inpatient sleep disruption in non-sedated children, generalizable across PICUs. It offers practical means to quantify PICU-SCD daily in future investigations.
METHODS: This prospective, multi-center, case-control study enrolled caregivers of children in four PICUs or in a hospital-based sleep lab (controls). Survey items were compiled from validated adult ICU and pediatric in- and outpatient sleep questionnaires. Control responses were compared to polysomnography to determine accuracy. A score was calculated by summing the level of disruption of sleep timing, duration, efficiency, quality, and daytime sleepiness and irritability.
RESULTS: In 152 PICU and 61 sleep lab caregivers, sleep survey items had acceptable internal reliability (α=0.75) and reproducibility on re-test surveys (ICC>0.600). Caregivers could not assess sleep of sedated children. Factor analysis identified three sub-scales of PICU-SCD. Control parents had good agreement with polysomnography sleep onset time (κ=0.823) and sleep onset latency (κ=0.707). There was a strong correlation between sleep scores derived by parental reporting to those by polysomnography (r=0.844, p<0.001). Scores had a linear association with caregiver-reported child sleep quality. There were no site-specific differences in sleep quality. Nearly all respondents found the survey easy to understand and of appropriate length.
CONCLUSIONS: The SSqPICU provides a reliable, accurate description of inpatient sleep disruption in non-sedated children, generalizable across PICUs. It offers practical means to quantify PICU-SCD daily in future investigations.
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