source: main/adopters/nm/trunk/src/main/webapps/nmibis-content/xml/query/module/acs/data_note/RedFlag.xml @ 19851

Last change on this file since 19851 was 19851, checked in by GarthBraithwaite_STG, 2 years ago

nm content - fixed RedFlag?.xmls.

File size: 1.3 KB
1<?xml version="1.0" encoding="ISO-8859-1"?>
3<DATA_NOTE xmlns:ibis="">
4        <NAME>RedFlag</NAME>
5        <TITLE>Statistical Stability</TITLE>
6        <TEXT>
7                Statistical stability, reported in the data table, is based on a statistic
8                called the "Relative Standard Error," or RSE, which is the standard error
9                expressed as a proportion of the point estimate (e.g., 30% of the point
10                estimate).
11        </TEXT>
12        <TEXT>
13                A dash (-) means that the relative standard error (RSE) is below 0.30
14                and the count or rate may be considered stable.
15        </TEXT>
16        <TEXT>
17                "Unstable" is displayed when the RSE is 0.30-0.50. An unstable count or rate
18                may fluctuate widely across time periods due to random variation (chance).
19        </TEXT>
20        <TEXT>
21                "Very Unstable" is displayed when the RSE is  greater than 0.50. A very
22                unstable count or rate should not be used to inform decisions. You may
23                combine years or otherwise increase the population size used in the query
24                to achieve a more stable count or rate.
25        </TEXT>
26        <TEXT>
27                Problems with statistical instability typically occur when there is a small
28                number of health events in a small population. For more information on
29                statistical stability, visit the NM-IBIS Reliability &amp; Validity page
30                [].
31        </TEXT>
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