The phrase "a proxy of severity of" is not correct in standard written English.
It may be intended to convey a measure or indicator of severity, but the construction is awkward and unclear.
Example: "The study used a proxy of severity of the disease to assess its impact on patients."
Alternatives: "an indicator of severity" or "a measure of severity".
However, we used the number of packages of anti-asthmatic medication dispensed to the children as a proxy of severity of asthma in order to adjust for it.
These effects were maintained when controlling for a proxy of severity of ACS (i.e. length of hospital stay – data not shown), showing the robust nature of these findings, and highlighting the importance of treating depression in this population.
Baecke et al. [ 45] and Engelhard et al. [ 46] did not include a separate variable for severe pre-eclampsia, but pre-eclampsia was divided into two groups, preterm pre-eclampsia and term pre-eclampsia which were used as a proxy of severity of the condition.
Resource consumption has been applied as a proxy of severity, especially at the hospital level for various purposes.
This was incorporated because it is considered an important consequence of back pain with the potential to be a proxy of severity.
The length of hospital admission for hospitalised patients over time (a further potential proxy of severity of illness) was examined using HES data.
Treatment with insulin (ATC A10A) in the 6 months prior to the date of hospital admission was regarded as proxy of severity of disease.
We follow Bohl et al. (2012) and also use location as a proxy for severity of the injuries.
The length of stay in our model acts as a proxy for severity of illness and reflects the consequences of deconditioning effect of bed rest and iatrogenic complications [ 33].
While the study lacked the statistical power to parse the unique contribution of each diabetes complication to depression treatment outcome, the presence of increasing complications is a proxy for severity of symptomatic diabetes.
