. 2021 Dec 17;13(12):4521. doi: 10.3390/nu13124521

Table 6.

Agreement of cross-quartile classification and weighted Kappa between BDHD-FFQ and 3DDR.

Nutrients (Unit)	Same Tertile (%)	Adjacent Tertile (%)	Opposite Tertile (%) ^a	Weighted Kappa (95% CI) ^b
Energy (Kcal/day)	42.27	44.33	2.06	0.43 (0.30;0.55)
Protein (g/day)	41.24	45.36	7.22	0.36 (0.23; 0.50)
Carbohydrate (g/day)	36.08	44.33	4.12	0.30 (0.16; 0.43)
Fat (g/day)	41.24	37.11	4.12	0.32 (0.17; 0.47)
Sodium (mg/day)	31.96	46.39	5.15	0.24 (0.10; 0.38)
Calcium (mg/day)	31.96	43.30	5.15	0.21 (0.08; 0.35)
Potassium (mg/day)	30.93	47.42	5.15	0.23 (0.09; 0.37)
Iron (mg/day)	29.90	38.14	7.22	0.12 (0.02; 0.27)
Phosphate (mg/day)	35.05	45.36	3.09	0.30 (0.16; 0.43)

^a Interpretation criteria (% in opposite tertile): good: ≤10%, poor: >10% [44]. ^b Interpretation criteria: good: ≥0.61; acceptable: 0.20–0.59; poor: <0.20 [44]. Abbreviations: 3DDR, 3-day diet recall; BDHD-FFQ, Bangladeshi Hemodialysis-Food Frequency Questionnaire; CI, confidence interval.