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Table 1 The original CGI-I [14]

From: Establishing content validity for the migraine Global Impression Item (mGI-I) assessment: a modified single-item migraine symptom severity questionnaire

Original CGI-I

Assessor

Item Stem

Response Scale

To be completed by the clinician:

Rate total improvement whether or not, in your judgement, it is due entirely to drug treatment. Compare to his condition at admission to the project, how much has he changed?

0 = Not assessed

1 = Very much improved

2 = Much improved

3 = Minimally improved

4 = No change

5 = Minimally worse

6 = Much worse

7 = Very much worse

  1. CGI-I Clinical global impression of improvement