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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