Tests for no treatment e?ect in randomized clinical trials
Tests for no treatment e?ect in randomized clinical trials
复制标题
在随机临床试验中测试无治疗效果
DOI:
--
复制
发表时间:
1988
期刊:
影响因子:
--
通讯作者:
S. Piantadosi
中科院分区:
文献类型:
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作者:
M. Gail;W. Y. Tan;S. Piantadosi
An axially contractable and expandable resilient bellows and a simple method of making the same from flexible heat reactive thermoplastic sheet material. The bellows may include a separable seam formed of interlocking tongue and groove plastic tapes permitting the installation and removal of the bellows without need for access to the opposite ends of the structure embraced. The processing of the bellows includes heating the material while supported on a coil or the like to shrink the same and form a deep spiralling convolution therealong. Any of a wide variety of shapes can be formed by selecting an appropriate form.
影响因子:
1.9
作者:
LAGAKOS, SW;SCHOENFELD, DA
通讯作者:
SCHOENFELD, DA
DOI:
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发表时间:
1972
期刊:
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影响因子:
--
作者:
D. Cox
通讯作者:
D. Cox