TY  - GEN
AU  - Wu,M
AU  - Fisher,M
AU  - DeMets,D
TI  - Sample sizes for long-term medical trial with time-dependent dropout and event rates
SN  - 0197-2456
PY  - 1981///1025
KW  - Clinical Trials as Topic
KW  - Humans
KW  - Mathematics
KW  - Models, Theoretical
KW  - Patient Compliance
KW  - Research Design
KW  - Risk
KW  - Sampling Studies
KW  - Time Factors
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1016/0197-2456(80)90014-8
ER  -