The phrase "at which severity" is correct and usable in written English.
It can be used when discussing the level or degree of something, often in contexts related to conditions, situations, or impacts.
Example: "The doctor explained the symptoms and asked at which severity the patient had been experiencing pain."
Alternatives: "at what level" or "at which degree".
The goals of this study were as follows: 1) to determine the crop growth stage at which severity of SB was most strongly related to grain yield (GY), thousand kernel weight (TKW), and granulometry (G) damage in brewing barley and 2) to evaluate the efficacy of fungicides in controlling SB and the effect of fungicide application timing on disease intensity and yield.
Results We first defined the time point at which severity of lung damages was similar in both IAV- and SP-infected animals.
Previously published studies have varied by infecting organism, patient population, classification of appropriate therapy and the time this variable was measured, whether or not severity of illness was controlled for in the final analysis, and the time at which severity of illness was measured.
The non-linear curve we chose provides an estimate of the distance into the treated area at which the severity metric is substantially reduced.
Transition point The point at which the severity of the pandemic provokes sufficient fear to invoke a sudden increase in prophylactic absenteeism within the population.
This suggests that, although knowing AKI natural course during ECMO may give arguments for delaying CRRT, there is clearly a cutoff value at which AKI severity directly impacts mortality.
There is no definite age threshold at which HZ severity, PHN frequency, pain intensity or disease burden as assessed by validated scales increased in patients aged 70 years or more.
In the absence of endogenous IFN-γ, arthritis peaked by day 20, at which point the severity was significantly different from the control groups.
Ashford et al. [ 46] applied IRT techniques to identify the degree of AD severity at which individual items of the MMSE are lost and the rate at which they are lost at that level of severity.
The intensity and severity at which noise impacts sleep is somewhat individual though, and some people are more sensitive than others.
Expected total scores show the level of symptom severity at which different options are endorsed.
