How many controls?
J Chronic Dis
.
1976 Nov;29(11):723-31.
doi: 10.1016/0021-9681(76)90073-4.
Authors
M Gail
,
R Williams
,
D P Byar
,
C Brown
PMID:
791962
DOI:
10.1016/0021-9681(76)90073-4
No abstract available
Publication types
Clinical Trial
MeSH terms
Clinical Trials as Topic
Humans
Mathematics
Research Design*