A word of caution about the sample size |
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Some hospitals have noted that with a sample size of 40 or even 50 cases per month, there will be normal variation in c-section rates from one month to the next that may not reflect a true increase in the rate of vaginal birth or c-section at your facility. A larger sample size is required to be able to say with certainty that a change in the c-section rate is actually a true change and not just a result of chance based on the cases that were included in your sample that month. Hospitals with the resources and volume to submit a larger sample may want to consider doing so. What this means is that if your hospital's c-section rate increased in one month, it may not be time to panic, this may just be random variation. If it remains higher over several months, this is more likely to reflect a true increase. When we look at data across many hospitals, we can be confident that changes in the rate of vaginal birth represent true changes. Individual hospital data combined over several months will also produce more reliable results.
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Agenda items for the three remaining sessions |
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Please let us know by April 4 if there are specific topics you would like us to include in the two remaining webinars and the final learning session. Materials from last week's webinars and induction policies and order sets shared by hospitals in the S4B initiative are currently posted on the Extranet, accessible on www.pqcnc.org
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Dates to remember
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April 10 - Deadline for submitting March data April 26 - Next all-team webinar June 7 - Final learning session in Raleigh
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Rate of induction among NTSV patients excluding PROM |
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As a follow up to our look at induction rates in the baseline data for this initiative, the chart below shows the rate of induction among NTSV patients admitted <41 weeks with none of the six risk factors we are tracking who had intact membranes at admission.

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Contact Kate
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Kate Berrien, RN, BSN, MS UNC Center for Maternal & Infant Health CB# 7181 Chapel Hill, NC 27599 kberrien@unch.unc.edu Phone: 919-843-9336 Fax: 919-843-7866 |