Figure 1.

Nutritional status at diagnosis and its prognostic significance in kidney transplant recipients with norovirus infection. (a) Prevalence of nutritional status categories (normal, moderate, severe undernutrition) at the time of diagnosis in kidney transplant recipients with norovirus infection (n = 159) compared with a matched control group of kidney transplant recipients with diarrhea unrelated to norovirus (n = 96). At diagnosis, severe undernutrition was more frequent in the norovirus group (29.6%) than in controls (10.4%) (P = 0.0010). Comparisons were performed using Mann–Whitney tests for intergroup comparisons. (b) Evolution of BMI over time in kidney transplant recipients with norovirus infection (baseline, diagnosis, 3, 6, and 12 months) according to nutritional status at diagnosis. Patients with severe undernutrition exhibited the greatest BMI loss at diagnosis and the most limited nutritional recovery at follow-up, with a persistent deficit compared with baseline BMI (−4%, P = 0.0456). Values are presented as medians with interquartile ranges; comparisons used paired Wilcoxon test, as appropriate. BMI, body mass index; M12, month 12.