Table 1.

Performance of the Mercy TAPEs and the Broselow tape. Data are presented as mean (standard deviation) unless otherwise indicated.

statistic	2D-TAPE	3D-TAPE	Broselow Tape^b	Size of Effect [95%CI] 2D vs. 3D	Size of Effect ^d [95%CI] 2D vs. Broselow	Size of Effect ^d [95%CI] 3D vs. Broselow
no. eligible (% of total)	624 (100)	624 (100)	415 (66.5)
mean error	0.28 (3.3)	0.22 (3.9)	−1.3 (3.7)	0.06 [−0.34, 0.46]	1.58 [1.15, 2.01]	1.52 [1.05, 1.99]
mean percentage error	1.65 (8.5)	1.91 (11.1)	−4.1 (11.9)	−0.26 [−1.36, 0.84]	5.75 [4.51, 6.99]	6.01 [4.59, 7.43]
root mean square error	3.33	3.92	3.9
95% limits of agreement^a	0.85–1.20	0.82–1.26	0.74–1.22
% w/in 10% [95% CI] eligible children only	76.4 [73.1, 79.8]	65.1 [61.3, 68.8]	58.6%^c [53.8, 63.3]	11.3 [6.28, 16.32]	17.8 [12.2, 23.4]	6.5 [0.5, 12.5]
% w/in 20% [95% CI] eligible children only	98.1 [97.0, 99.2]	93.3 [91.3, 95.2]	90.8% ^c [88.1, 93.6]	4.8 [2.6, 7.1]	7.3 [4.7, 9.9]	2.5 [−0.8, 5.8]

CI- confidence interval

back transformed from the log-adjusted data

calculations are based only on children for whom the method is applicable

when the entire population is considered Broselow predicted weight within 10 and 20% of actual in only 38.9% [35.1, 42.8] and 60.4% [56.6, 64.3] of children, respectively.

confidence interval for the difference calculated using independent measures to account for differences in sample size