English to Spanish Medical Medical: Pharmaceuticals

Estoy traduciendo un documento de un estudio clínico. En la sección de resultados, dice:

"AEs were allocated to a phase based on their start date (**treatment-emergent principle**). For more detailed information on the definition of each of the phases and on allocation of AEs to a phase refer to SAP in Section 8.1.8."

Buscando la expresión en internet, solo la encontré una vez:

"AEs were analysed according to the ** treatment-emergent principle**, i.e., an event was only reported after first occurrence or worsening in at least severity, relation, seriousness, or action taken towards study medication."

¿Cómo lo traducirían?

Normalmente, en un estudio o ensayo clínico, "treatment-emergent" se asocia a eventos o acontecimientos adversos (treatment-emergent adverse events = eventos adversos surgidos durante el tratamiento)

Muchas gracias por adelantado