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. 2015 Apr 29;15:36. doi: 10.1186/s12911-015-0148-4

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© Raghu et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Estimate of the mean procedure times with 95% confidence intervals for ASHAs npB1, npM1, and npL1 over successive procedures performed (for the duration of the pilot study). ASHA npM1 has the narrowest CI and least estimated mean procedure time while npL1 has the widest CI and highest estimated mean procedure time at end of the study. The estimate of 95% CI and mean procedure time was obtained using a bootstrapped sample that included risk assessments performed up until and including that time period in the study. This was performed to account for uneven sampling bias (for example, at the 5^th procedure, procedure 1 till 5 were taken as samples and bootstrapped). After ASHA npL1’s 13^th procedure, her estimated mean procedure time increases which suggests that she took much longer to complete the last two risk assessment procedures.