School attendance and sport participation amongst children with chronic kidney disease: a cross-sectional analysis from the Kids with CKD (KCAD) study

Background School attendance and life participation, particularly sport, is a high priority for children with chronic kidney disease (CKD). This study is aimed at assessing the association between CKD stage, sports participation, and school absences in children with CKD. Methods Using data from the binational Kids with CKD study (ages 6–18 years, n = 377), we performed multivariable regression to evaluate the association between CKD stage, school absences, and sports participation. Results Overall, 62% of participants played sport with the most frequent sport activities engaged in being swimming (17%) and soccer (17%). Compared to children with CKD 1–2, the incidence rate ratios (IRR) (95% CI) for sports participation amongst children with CKD 3–5, dialysis, or transplant were 0.84 (0.64–1.09), 0.59 (0.39–0.90), and 0.75 (0.58–0.96), respectively. The median (IQR) days of school absences within a four-week period were 1 day (0–1), with children on dialysis reporting the highest number of school absences (9 days (5–15)), followed by transplant recipients (2 days (1–7)), children with CKD 3–5 (1 day (0–3)), and with CKD 1–2 (1 day (0–3)). Duration of CKD modified the association between CKD stage and school absences, with children with a transplant experiencing a higher number of missed school days with increasing duration of CKD, but not in children with CKD 1–5 or on dialysis ( p -interaction