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Table 4 Sleep Disturbance, Sleep-Related Impairment, and Fatigue conceptual frameworks and number of children with chronic kidney disease for whom each facet was eliciteda

From: Establishing the content validity of PROMIS Pediatric pain interference, fatigue, sleep disturbance, and sleep-related impairment measures in children with chronic kidney disease and Crohn’s disease

FacetsNo. Children Reporting
Sleep Disturbance (problems sleeping)
 Sleep onset25
 Sleep continuity21
 Sleep quality9
Sleep-related Impairment (impact of sleepiness on daytime functioning)
 Daytime sleepiness20
 Sleep offset24
 General activities20
Fatigue (impact of fatigue on)
 Feelings of tiredness25
 Feelings of weakness12
 Climbing stairs1
 General activities15
 Performing tasks10
  1. aThe conceptual frameworks were based on the original item pool for the PROMIS measure. An b is used to denote that the facet was dropped from the item bank after psychometric evaluation of item and scale performance. Facets are listed with symptoms first, then impacts on physical, mental, social, and general functioning