Validation of a quantitative food frequency questionnaire for Inuit population in Nunavut, Canada.

摘要: Background:  Validation of a quantitative food frequency questionnaire (QFFQ) developed specifically for Inuit is necessary to determine its usefulness in assessing dietary intake and adequacy identifying risk factors chronic disease this population. Methods:  Seventy-five randomly selected adults Nunavut, Canada, were recruited. Mean daily nutrients from one three 24-h recalls was used as the reference measure QFFQ validity. Crude energy-adjusted Spearman rank correlations (ρ), cross classification weighted kappa computed measures concordance. Bland–Altman plotting additional assessment. Results:  Excluding four participants with energy >25.1 MJ, 71 included analysis. For all nutrients, mean higher than recall. ρ’s macronutrients range 0.71 carbohydrate 0.25 protein. The best ρ amongst micronutrients observed vitamin C (0.66). Overall correlation between two tools improved after correction within-person variance (from 0.46 0.49), although adjusting did not improve overall coefficient. When nutrient intakes categorised into quartiles, indicated relative agreement proportion (same or adjacent quartiles) 83% energy, 94% total sugar, 77% micronutrients. plots showed tendency increased scatter differences at intakes. Conclusions:  valid can be assess usual adequacy, contribution foods specific intakes, identify population.