https://www.stata.com/support/faqs/statistics/subpopulation-estimation/
FAQ: Number of observations for subpopulation estimation | Stata
How is the number of observations computed for subpopulation estimation?
number offaqobservationssubpopulationestimation
https://www.accelera.org/resources/2016-eurotox-lymphocytes-subpopulation-and-cytokines-as-useful-preclinical-biomarkers-following-treatment-with-t-cell-bispecific-antibodies/
2016 EUROTOX Lymphocytes Subpopulation And Cytokines As Useful Preclinical Biomarkers Following...
lymphocytessubpopulationcytokinesusefulpreclinical