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Table 1 Effect of backboard use and memory foam on mattress compression depth

From: Reducing the impact of intensive care unit mattress compressibility during CPR: a simulation-based study

Mattress compression depth (mm) Mean (95% confidence interval)
No backboard Backboard Backboard benefit Backboard mean benefit main effect
Typical mattress 47.9 (40.5, 55.3) 34.6 (28.6, 40.7) 13.3 (10.6, 15.9) 11.6 (9.0, 14.3)
Memory foam 34.6 (28.6, 40.7) 24.6 (22.5, 26.7) 10.0 (7.4, 12.7)
Memory foam benefit 13.3 (6.4, 20.2) 10.0 (3.2, 16.9) NA NA
Memory foam mean benefit main effect 11.7 (4.8, 18.5) NA NA
  1. Presented are the mean adjusted values from a mixed effects linear model. Fixed effect: mattress type, use of CPR backboard and interaction between mattress type and use of CPR backboard. Random effect: intercept, mattress type, and use of CPR backboard. Goodness of fit: marginal R 2 = 0.33, conventional R 2 = 0.82
  2. NA not applicable
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Advances in Simulation

ISSN: 2059-0628

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