17202
With multiple linear regression , we examined the impact on the relative change in new drug use post - DHPC of the following : time to DHPC , trend in use , degree of innovation , specialist drug , first / repeated DHPC , DHPC template , and type of safety issue .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None