Nutrition Journal

Table 3 Food frequency questionnaires and 3-day food records: Comparison of nutrient median (inter-quartile range) daily intake and correlation coefficients

From: Development and relative validation of a food frequency questionnaire for French-Canadian adolescent and young adult survivors of acute lymphoblastic leukemia

	Median (IQR) daily intake			Correlations^c
	3-DFR	FFQ^b	Difference % (IQR)^a	Unadjusted	Energy-adjusted^d
Energy (kcal)	2093 (1860–2518)	2439 (2020–2802)^***	12.1 (−1.1–24.9)	0.72^**
Protein (g)	87.2 (78.4–106)	102 (82.9–122)^***	12.7 (−3.2–32.0)	0.59^**	0.47^**
CHO (g)	248 (214–307)	295 (254–379)^***	20.0 (1.75–43.0)	0.50^**	0.39^**
Lipids (g)	82.8 (68.3–103)	84.1 (74.8–103)	2.5 (− 12.9–16.5)	0.74^**	0.28^*
SFA (g)	28.9 (21.8–37.3)	28.3 (23.7–32.7)	−4.7 (− 17.9–18.7)	0.69^**	0.33^**
MUFA (g)	29.2 (23.1–35.6)	29.8 (25.8–36.8)	2,6 (−14.2–25.9)	0.61^**	0.25^*
PUFA (g)	15.0 (10.7–19.5)	15.8 (12.8–19.3)	3.2 (− 10.8–26.1)	0.58^**	0.33^**
Cholesterol (mg)	266 (195–351)	256 (197–332)	− 9.1 (− 31.1–32.0)	0.46^**	0.24^*
Dietary fiber (g)	17.3 (13.6–21.0)	23.8 (18.1–29.8)^***	31.1 (0.4–60.0)	0.50^**	0.58^**
Alcohol (g)	0.0 (0.0–4.6)	1.1 (0.0–9.5)^*	–	0.59^**	0.47^**
Vitamin A (μg)	720 (564–988)	950 (747–1171)^***	34.3 (− 8.5–80.4)	0.47^**	0.41^**
Vitamin C (mg)	122 (74.9–183.2)	187 (139–257)^***	52.6 (14.5–122)	0.55^**	0.50^**
Vitamin E (mg)	6.2 (4.6–8.4)	8.9 (7.35–10.6)^***	50.6 (16.4–73.5)	0.54^**	0.47^**
Vitamin D (IU)	176 (114–255)	226 (157–296)^**	24.3 (− 16.0–83.1)	0.58^**	0.50^**
Calcium (mg)	1080 (690–1407)	1307 (1002–1654)^***	23.0 (2.5–49.6)	0.70^**	0.52^**
Iron (mg)	12.5 (11.0–16.3)	16.0 (13.2–19.0)^***	16.0 (3.7–45.6)	0.49^**	0.42^**
Folate (mcg)	347 (296–437)	492 (388–620)^***	39.6 (14.4–72.4)	0.46^**	0.41^**

Values are median (IQR), N = 80
IQR inter-quartile range, 3-DFR 3-day food record, FFQ food frequency questionnaire, CHO carbohydrates, SFA saturated fatty acids; MUFA monounsaturated fatty acids, PUFA polyunsaturated fatty acids
Note: Data presented as means ± SD are available in Additional file 1: Table S9
^*P ≤ 0.05; ^**P ≤ 0.01; ^***P ≤ 0.0001
^a(Daily intake as per FFQ – Daily intake as per 3-DFR)/(Daily intake as per 3-DFR) × 100
^bWilcoxon signed-rank tests were used to compare values obtained from both FFQ and 3-DFR
^cSpearman correlations were used to assess the relationship of energy, nutrient intakes and energy-adjusted nutrient intakes between 3-DFR and FFQ
^dThe residual method was used to calculate the energy-adjusted variables

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ISSN: 1475-2891

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