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Table 4 Measured versus stated energy content among a subsample of foodsa from quick-service restaurants (QSRs) assessed using bomb calorimetry

From: A pilot and feasibility study to assess children’s consumption in quick-service restaurants using plate waste methodology

 

Sample size

Stated Energy

Mean ± SD

(kcal/portion)

Measured Energy

Mean ± SD

(kcal/portion)

Energy Difference

Meanb ± SD

(%c ± SD)

[kcal/portion]

Overall

17

409 ± 196

382 ± 162

−27 ± 59

(8.7 ± 3.3)

QSR Chain 1

9

438 ± 100

389 ± 73

−49* ± 41

(10.9 ± 2.6)

QSR Chain 2

8

374 ± 232

376 ± 271

2 ± 68

(6.1 ± 1.9)

  1. *Stated Energy and Measured Energy are significantly different (p < 0.05) using paired t-tests
  2. a Based on the pre-consumption food samples
  3. b Calculated as Measured – Stated Energy
  4. c Calculated as the absolute percent difference in calories between the Stated Energy and Measured Energy