Association between nutritional status and dietary intake in patients with cystic fibrosis.
OBJECTIVE
To determine the relationship between nutritional status and dietary intake in patients with cystic fibrosis.


METHODS
Cross-sectional study involving 85 cystic fibrosis patients between 6 and 18 years of age. Dietary intake was evaluated by the 3-day diet record (weighing the food consumed). The outcome measures were the following nutritional status indicators: weight/height (W/H%) percentage, body mass index (BMI) percentiles, Z score for weight/age (W/A), Z score for height/age (H/A) and percentage of dietary intake compared with the Recommended Dietary Allowance (RDA).


RESULTS
The prevalence of well-nourished patients was 77.7%, using BMI above the 25th percentile as the cut-off value, and the W/H% was above 90% in 83.5%. The mean dietary intake, evaluated in 82 patients, was 124.5% of the RDA. In the univariate logistic regression analyses, we found a significant association between the independent variable calorie intake and the Z score for W/A. The multivariate analysis, based on the Z score for H/A and adjusted for FEV1, methicillin-resistant Staphylococcus aureus colonization and number of hospitalizations, demonstrated that a 1% increase in the calorie intake decreases the chance of having short stature by 2% (OR: 0.98; 95% CI: 0.96-1.00). Maternal level of education showed a borderline association (p = 0.054).


CONCLUSIONS
The prevalence of malnutrition was low in this sample of patients. The study model demonstrated an association between dietary intake and nutritional status. Dietary intake was a predictive factor of statural growth in patients with cystic fibrosis.
Simon
Míriam Isabel Souza dos Santos
MI
Porto Alegre Hospital de Clínicas, Universidade Federal do Rio Grande do Sul - UFRGS, Rio Grande do Sul Federal University - School of Medicine, Porto Alegre, Brazil. misantos@hcpa.ufrgs.br
Drehmer
Michele
M
Menna-Barreto
Sérgio Saldanha
SS
D000293:Adolescent; D001823:Body Composition / Q000502:physiology; D015992:Body Mass Index; D002648:Child; D003430:Cross-Sectional Studies; D003550:Cystic Fibrosis / Q000503:physiopathology*; D004032:Diet; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D015596:Nutrition Assessment; D009752:Nutritional Status / Q000502:physiology*