Reliability and validity of the FFQ and feeding index for 7-to 24-month-old children after congenital heart disease surgery

Table 1 Reliability of intakes of food groups between the FFQ1 and FFQ2 ^a

Food groups	FFQ1				FFQ2				ICC	P-value
Food groups	Mean	Median	P25	P75	Mean	Median	P25	P75	ICC	P-value
Frequency of breastfeeding (times/day)	2.4	0.0	0.0	5.0	2.2	0.0	0.0	5.0	0.904	< 0.001
Frequency of formula milk (times/day)	3.8	4.0	2.0	6.0	3.7	4.0	2.0	5.8	0.847	< 0.001
Formula milk (mL/per time)	105	120	50	150	103	120	60	150	0.581	< 0.001
Frequency of complementary food (times/day)	2.7	3.0	2.0	3.0	2.9	3.0	2.0	3.0	0.512	< 0.001
Frequency of fruit	2.2	2.0	1.0	4.0	1.9	2.0	1.0	3.0	0.563	< 0.001
Portion of fruit ^b	0.6	0.5	0.5	1.0	0.6	0.5	0.5	0.5	0.301	0.002
Frequency of vegetables	1.9	2.0	0.0	3.0	1.7	2.0	1.0	2.0	0.720	< 0.001
Portion of vegetables ^b	0.4	0.5	0.0	0.5	0.4	0.5	0.0	0.5	0.387	< 0.001
Frequency of meat	1.3	1.0	0.0	2.0	1.6	1.0	0.0	3.0	0.546	< 0.001
Portion of meat ^b	0.3	0.0	0.0	0.5	0.5	0.5	0.0	0.5	0.339	< 0.001
Frequency of fish	1.3	1.0	0.0	2.0	1.3	1.0	0.0	2.0	0.688	< 0.001
Portion of fish ^b	0.5	0.5	0.0	0.5	0.5	0.5	0.0	0.5	0.378	< 0.001
Frequency of red meat	2.0	2.0	0.0	2.0	2.0	2.0	0.0	3.0	0.736	< 0.001
Portion of red meat ^b	0.4	0.5	0.0	0.5	0.6	0.5	0.0	1.0	0.266	0.004
Portion of soy products ^b	0.4	0.0	0.0	0.0	0.5	0.0	0.0	1.0	0.588	< 0.001
Portion of solid soy products ^b	0.1	0.0	0.0	0.0	0.2	0.0	0.0	0.5	0.515	< 0.001
Portion of liquid soy products ^b	0.0	0.0	0.0	0.0	0.1	0.0	0.0	0.0	0.289	0.001
Frequency of coarse food grain	1.0	1.0	0.0	2.0	1.1	1.0	0.0	2.0	0.600	< 0.001
Portion of coarse food grain ^b	0.4	0.5	0.0	1.0	0.5	0.5	0.0	1.0	0.371	< 0.001
Frequency of egg	1.7	2.0	0.0	2.0	1.6	2.0	0.0	2.0	0.655	< 0.001
Portion of egg ^b	0.5	0.5	0.0	1.0	0.5	0.5	0.0	1.0	0.439	< 0.001

Abbreviation: FFQ food frequency questionnaire
FFQ for Chinese children aged 7–24 months with CHD.n = 95
^a FFQ1: the first time to complete the FFQ; FFQ2: the second time to complete the FFQ in the 7–10 days
^b Portion in the table means specific weight per serving: fruit, vegetable:100 g/portion; Meat (Chicken, duck, goose meat, etc.), red meat (Pork, beef and mutton): 40-50 g/portion; Egg: 1/portion; Soy products (soybean, soy milk, bean curd, soy milk), solid soy products: (1 portion = 20 g soybean = 45 g bean curd); liquid soy products: (1 bottle = 200 ml soy milk), coarse food grain (corn, millet, sweet potato, mung bean, sorghum, oats, buckwheat, etc.): 50-60 g/portion; beverages: 250 ml/portion

ISSN: 1471-2431