before-and-after trial

An investigation of therapeutic alternatives in which patients from time-period A, and under treatment-regimen A, are compared to patients at a later time B under treatment B. If the disorder is not fatal and treatment A is not curative, the same individuals may be studied in both the before and after periods, strengthening the study design by increased the comparability of the 2 groups for the 2 periods; a reflexive design in which only a few before-intervention and after-intervention measures are taken.

单词	before-and-after trial
释义	before-and-after trial before-and-after trial An investigation of therapeutic alternatives in which patients from time-period A, and under treatment-regimen A, are compared to patients at a later time B under treatment B. If the disorder is not fatal and treatment A is not curative, the same individuals may be studied in both the before and after periods, strengthening the study design by increased the comparability of the 2 groups for the 2 periods; a reflexive design in which only a few before-intervention and after-intervention measures are taken.
随便看	bleed somebody dry bleed somebody dry/white bleed somebody white bleed someone dry bleed (someone or something) dry bleed (someone) white bleed someone white bleed someone white, to bleeds to death bleed storage tank bleeds white bleed the dream bleed the lizard bleed them dry bleed them white bleed-through bleed to death bleed to pressure system bleed us dry bleed us white bleed valve bleed white bleed you dry bleed you white bleep