Overweight and Obese Children's Ability to Report Energy Intake Using Digital Camera Food Records during a 2-Year Study

Table 3

Mixed model analyses of possible differences in accuracy of assessed energy intake (EI) from estimated food records aided by digital camera compared with total energy expenditure (TEE) registered with SenseWear Armband, of children on 7 occasions during 2 years. Analyses were conducted with regard to presence of a weekend day in the record, group belonging (intervention or control group), sex, age, and BMI z-score.

	Model with dependent variable EI-TEE	Model with dependent variable (EI-TEE)/TEE
	b (95% CI)	b (95% CI)
Assessment occasion 1 (n = 73)	Reference	Reference
Assessment occasion 2 (n = 46)	0.09 (−1.06, 1.24)	0.002 (−0.09, 0.10)
Assessment occasion 3 (n = 41)	−1.04 (−2.23, 0.16)	−0.09 (−0.18, 0.01)
Assessment occasion 4 (n = 42)	−0.19 (−1.37, 1.00)	−0.04 (−0.13, 0.06)
Assessment occasion 5 (n = 31)	0.04 (−1.29, 1.36)	0.00 (−0.11, 0.11)
Assessment occasion 6 (n = 28)	−0.33 (−1.73, 1.06)	−0.003 (−0.12, 0.11)
Assessment occasion 7 (n = 27)	−0.22 (−1.61, 1.18)	−0.001 (−0.12, 0.11)
Weekend day in record	0.42 (−0.07, 0.90)	0.04 (0.001, 0.08)^*
Group^1	0.06 (−0.70, 0.82)	0.02 (−0.04, 0.08)
Sex^2	−0.50 (−1.32, 0.32)	−0.07 (−0.14, −0.01)^*
Age	−0.61 (−0.98, −0.25)^***	−0.04 (−0.07, −0.01)^**
BMI z-score^3	−1.89 (−2.67, −1.11)^***	−0.12 (−0.18, −0.06)^***

¹Reference category: control group.
²Reference category: boys.
³Calculated in comparison with a mixed child reference population [14].
^*Significance at P ≤ 0.05.
^**Significance at P ≤ 0.01.
^***Significance at P ≤ 0.001.