The “PAWPER-on-a-page”: Increasing global access to a low-cost weight estimation system

doi:10.5847/wjem.j.1920-8642.2019.02.006

Abstract

Abstract:

BACKGROUND: The PAWPER tape is one of the most accurate weight estimation systems available today, but international access to the tape is limited because it has no commercial distribution. For this reason, the “PAWPER-on-a-page” concept was devised: downloadable image files that allow users to print and assemble their own tapes. However, the feasibility of this method is dependent on users being able to produce accurate tapes. This study was devised to determine whether untrained participants could print and assemble the “PAWPER-on-a-page” easily and accurately.
METHODS: Doctor and nurse volunteers downloaded the “PAWPER-on-a-page” and “PAWPER XL-on-a-page” image files and printed copies on a home-printer and also at a commercial printer. One copy of each tape was then assembled according to instructions from an online video. The accuracy of printing and assembly, the time taken for assembly and the cost were then evaluated.
RESULTS: There were 32 participants. The median time for assembly was 8 minutes 19 seconds and 7 minutes 31 seconds for the “PAWPER-on-a-page” and “PAWPER XL-on-a-page” respectively, with a median cost of USD 0.09 and USD 1.00 respectively. For the assembled tapes, 71.9% of the “PAWPER-on-a-page” tapes and 65.6% of the “PAWPER XL-on-a-page” achieved the required accuracy of 0.2%. Printing errors, related to scaling, were common, but easily detectable.
CONCLUSION: The “PAWPER-on-a-page” system can be easily, quickly, affordably and accurately printed and assembled by end users. Stringent double checking of the printed and fully assembled tapes is essential to ensure accuracy.

Key words: PAWPER tape, Weight estimation, Paediatric emergency care

Mike Wells, Lara Nicole Goldstein. The “PAWPER-on-a-page”: Increasing global access to a low-cost weight estimation system[J]. World Journal of Emergency Medicine, 2019, 10(2): 101-108.

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References 8

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Variables	“PAWPER-on-a-page” home printed	“PAWPER-on-a-page” commercially printed	“PAWPER XL-on-a-page” commercially printed
Number	31	30	31
Page scale error, n (%)	11 (35.5)	9 (30.0)	11 (35.5)
Assembly time median (IQR) (minutes:seconds)	8:19 (6:55, 10:57)	-	7:31 (5:03, 10:23)
Cost median (IQR) (USD)	-	0.09 (0.08, 0.17)	1.00 (0.75, 1.08)

Questions	Response
Participants who found the process easy	32/32 (100%)
Assessment of final product to be good or excellent	30/32 (93.8%)
Participants who spontaneously identified a problem with printing prior to assembly of tapes	7/11 affected participants (63.6%) 14/20 affected tapes (70.0%)
Suggestions for improvement	Make smaller gaps between sections of PAWPER-on-a-page (5) Make tabs larger on PAWPER XL-on-a-page (4)