TY  - GEN
AU  - Knottnerus,J A
AU  - Bouter,L M
TI  - [Roaming through methodology. XXXIII. Ethics of sample size estimation: less subjects needed for a one-sided than for a two-sided statistical investigation]
SN  - 0028-2162
PY  - 2001///0726
KW  - Case-Control Studies
KW  - Clinical Trials as Topic
KW  - methods
KW  - Data Interpretation, Statistical
KW  - Ethics, Medical
KW  - Humans
KW  - Research Design
KW  - standards
KW  - Sample Size
N1  - Publication Type: English Abstract; Journal Article; Review
ER  -