1. Statistical examination of treatment effects or study outcomes within specific subsets of a study population, typically defined by demographic, clinical, or other characteristics
The subgroup analysis revealed that the drug was more effective in patients over 65 years old.
A análise de subgrupos revelou que o medicamento foi mais eficaz em pacientes com mais de 65 anos de idade.
2. A method in clinical research used to identify whether different populations respond differently to an intervention
Researchers performed a subgroup analysis stratified by gender and age to assess treatment efficacy.
Os pesquisadores realizaram uma análise de subgrupos estratificada por sexo e idade para avaliar a eficácia do tratamento.