Throughout the Trella Health Solutions you will find some counts and performance metrics that do not include actual numbers. This article explains the alternative entries.
Our data is derived from the CMS Virtual Research Data Center. In order to maintain the levels of patient confidentiality required by CMS, all counts and percentages that could reveal a patient count less than 11 will be indicated by <11 in that cell in the table.
- For counts, <11 is used for any patient count less than eleven (11).
- For percentages, this would represent any instances where the calculation includes a patient count that is less that eleven (11) in the denominator. In these cases, the percentage is replaced with "ins." See below.
For entries where the table is sorted and multiple <11 entries are found, the order of those entries does not reveal anything about the relative value of the hidden <11 metrics. We do not receive numbers back from CMS that we hide; numbers less than eleven in the CMS database are delivered to us with no identifiable number. As far as usage is concerned, the order of <11 entries in a table should not be construed with any conclusion about what the numbers are that are hidden.
"ins" stands for insignificant or insufficient.
Sometimes when we calculate a performance statistic, the final number is too small, or too small statistically to be meaningful. Also, the size of the data pool used in calculating some numbers is too small to provide a meaningful final number. In all of these cases, we present the response "ins" to indicate that, after calculation, the data has no value. See Statistical Significance for Solution Display.
Anytime a hyphen, "-" appears in the data, this represents a zero. For patient counts, this either means that the returned count for the given metric was actually a zero, (e.g. in the Last Claimed column), or, it could mean that there was no claim to provide data for that count.