In the clinical trial literature Anscombe's approach is considered Bayesian, and Armitage is frequentist. From Armitage's 1963 response to Anscombe's paper:
'Anscombe takes the Bayesian view that inferences should be made in terms of the likelihood function... An immediate consequence is that stopping-rules are irrelevant to the inference problem.'
Page 6 of the Anscombe paper that I cited may be helpful in your understanding of the approach.
'Anscombe takes the Bayesian view that inferences should be made in terms of the likelihood function... An immediate consequence is that stopping-rules are irrelevant to the inference problem.'
Page 6 of the Anscombe paper that I cited may be helpful in your understanding of the approach.