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We categorized the level of comorbidity by using the Charlson Comorbidity Index (CCI) [ 19], an extensively studied and validated instrument used to predict risk of death from comorbid diseases [ 19, 20].
To summarize these frequencies, we categorized the level of prenatal care per trimester according to the quartile distribution of the number of visits (see Methods and Additional file 1 for details).
To compare these results according to seropositivity of H. Pylori, we categorized the level of total cholesterol (TC) as normal (≤240 mg/dl) and abnormal (>240 mg/dl), trigryceride (TG) as ≤150 mg/dl and >150 mg/dl, and fasting glucose as ≤100 mg/dl and >100 mg/dl, respectively.
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For correlations, we categorized the levels of evidence from 1 to 4 (1 = level 1A, 2 = level 1B, 3 = level 2-1, 4 = level2-2) with 1 representing the highest level.
The Sara Lee Corporation in Chicago, seeking to stimulate growth after disappointing results, is categorizing the level of advertising and marketing support that its brands should receive.
A Preliminary Risk Analysis (PRA) seems to be an interesting way to categorize the level of alarms.
A logarithmic lifetime diagram associated with the common time units was used for presenting the ageing data, which regardless of the spread in the lifetimes allowed categorizing the level of the stability of P3HT PCBM based devices tested under different ageing conditions.
The goal of this study was to use a short screening tool, the FRAIL scale, to categorize the level of frailty of older adults admitted with a fracture to determine the association of each frailty category with postoperative and 30-day outcomes.
After categorizing the level of proteinuria, a graded relationship between amount of proteinuria and adjusted level of FGF23 was revealed.
A simple, hierarchical grading system has been used in this paper to categorize the level of evidence supporting recommendations in the JE surveillance standards (Table 2).
In this study, we used Resource Utilization Bands, which range from 0 (lowest expected health care costs) to 5 (highest expected health care costs), to categorize patients based on their expected use of health care resources, and Aggregated Diagnosis Groups, which range from 0 (no diagnosis group) to 32 (a maximum of 32 distinct diagnosis groups) to categorize the level of co-morbidity.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com