Background and Objectives
Chronic kidney disease is a persistent chronic health condition commonly seen
in pediatric nephrology programs. Our study aims to evaluate the sensitivity of the
Patient Reported Outcomes Measurement Information System (PROMIS) pediatric instrument
to indicators of disease severity and activity in pediatric chronic kidney disease.
Methods
This cross sectional study included 233 children 8–17 years old with
chronic kidney disease from 16 participating institutions in North America. Disease
activity indicators, including hospitalization in the previous 6 months, edema, and
number of medications consumed daily, as well as disease severity indicators of kidney
function and coexisting medical conditions were captured. PROMIS domains, including
depression, anxiety, social-peer relationships, pain interference, fatigue, mobility,
and upper extremity function, were administered via web-based questionnaires. Absolute
effect sizes (AES) were generated to demonstrate the impact of disease on domain scores.
Four children were excluded because of missing GFR estimations.
Results
221 of the 229 children included in the final analysis completed the entire
PROMIS questionnaire. Unadjusted PROMIS domains were responsive to chronic kidney
disease activity indicators and number of coexisting conditions. PROMIS domain scores
were worse in the presence of recent hospitalizations (depression AES 0.33, anxiety AES
0.42, pain interference AES 0.46, fatigue AES 0.50, mobility AES 0.49), edema
(depression AES 0.50, anxiety AES 0.60, pain interference AES 0.77, mobility AES 0.54)
and coexisting medical conditions (social peer-relationships AES 0.66, fatigue AES 0.83,
mobility AES 0.60, upper extremity function AES 0.48).
Conclusions
The PROMIS pediatric domains of depression, anxiety, social-peer relationships,
pain interference, and mobility were sensitive to the clinical status of children with
chronic kidney disease in this multi-center cross sectional study. We demonstrated that
a number of important clinical characteristics including recent history of
hospitalization and edema affected patient perceptions of depression, anxiety, pain
interference, fatigue and mobility. The PROMIS instruments provide a potentially
valuable tool to study the impact of chronic kidney disease. Additional studies will be
required to assess responsiveness in PROMIS score with changes in disease status over
time.