11756
The power and the type I error rate of the placebo - corrected ( i . e . , simply adjusting the observed treatment value by subtracting the placebo mean ) and the placebo - anchored ( i . e . , including the placebo data as dose 0 in the regression ) slope analyses were assessed based on regulatory submission data for two antihypertensive drugs and simulated data from hypothetical clinical trials .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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