The most frequent definition of late presentation for treatment is a CD4 cell count below 200 cells/mm, although other thresholds have ranged from 50 to 350 cells/mm[ 1, 7- 18].
In literature, the most frequent definitions are the tracheostomy need or length of stay of at least 8 days in ICU.
However, these studies on persistent frequent attendance used different definitions of frequent attenders and lacked the power to detect differences in morbidity between transient and persistent frequent attenders.
However, a small subset uses a less frequent definition.
However, studies on persistent frequent attendance used different definitions of frequent attendance and lacked the power to detect differences in morbidity and prescription data.
In particular, we provide a brief overview of network analysis, fundamental definitions of frequent pattern mining and maximal frequent itemset mining.
Availability of a large data sample allowed for a valid comparison between different definitions of frequent attendance.
Moreover, since we had information about diagnoses as well as service demands of the patients included, we could show which diagnoses and medical services were associated with both definitions of frequent attenders.
This variability is a result of inconsistencies in the analytical methods, varied definitions of phenotype, frequent lack of replication, and occasional lack of reported allelic frequencies and/or relative risks.
The first model including the "proportion" variables for the five most common ICD 9 diagnoses was statistically significant with a χ2 value of 278.3 (7 degrees of freedom, N = 15806, p < 0.01) indicating the model was able to distinguish between frequently readmitted and patients not frequently readmitted based on the definition of frequent admissions as three or more.
