This is the 12315th most frequent Turkish word.
hastalarda
"In patients."
Here, 'hastalarda' is used to specify the patients in which the symptoms are observed, indicating a locative construction (in patients).
Doktor, hastalarda görülen semptomları dikkatlice inceliyor.
The doctor carefully examines the symptoms observed in patients.
In this context, 'hastalarda' is used to define the subset of people (patients) who can experience side effects, again employing a locative meaning.
Hastalarda yan etkiler hemen fark edilebilir.
Side effects can be immediately noticeable in patients.
Here, 'hastalarda' expresses the group who benefit from the treatment's effects, showcasing locative usage indicating 'within patients' or 'among patients'.