These methodological changes include adding or removing individual components from aggregate indicators from one data year to another and changing the methodology and definitions of these components.
This observation justifies the practice of treating the binary indicators from one patient as independent Bernoulli trials [ 14].
We tested the significance of differences in levels of indicators from one year to another using the Mantel-Haenszel Chi square (X2mh) procedure [ 15].
However, the long observation time, the completeness of the data and the stability of outcome indicators from one year onwards to some extent compensated for the limited number of patients.
In this model, each laboratory task is measured by two indicators, one indicator from biochemistry and one indicator from cell biology.
+ a fixed coefficient * beyond 2 standard errors ** beyond 3 standard errors § constrained to be equal ++ Identifying Browne et al's [1] exploratory two-factor model requires excluding one indicator from loading on each factor.
There are 16 different ways of excluding one IFN indicator from loading on the NK activity factor and simultaneously excluding one NK indicator from the INF activity factor (see dashed loadings in Figure 1).
Independent Variables removed from equation: All practice indicator variables aside from one (Practice X); all purposes for PA calls aside from OT/PT; all other insurance types aside from Medicaid; rurality; all reporter types (physician, nurse, clerical, etc).. *EHR = Electronic Health Record, †OT = Occupational Therapy, PT = Physical Therapy.
When indicators are transferred from one region or country to another, or from one hazard context to another, the indicators have to be revalidated carefully to ensure that they actually measure the intended concept.
The rationales for this decision are, first, nursing homes are unstable environments[ 51] and second, nursing home quality indicators can fluctuate from one six-month period to the next[ 52].
