“…Other predictors for poor outcomes after withdrawal strategies may be certain headache characteristics (high frequency of headache days before withdrawal, length of overuse, greater number of previous treatments, number of overused drugs, return to the overused drug), socioeconomic factors (unemployment, unmarried, less frequent consumption of coffee, smoking, alcohol consumption), previous history of withdrawal, comorbidities (depression, tendency for substance dependency), and greater disability (high MIDAS scores, low self‐reported sleep quality, and low SF‐36 scores on bodily pain) 57,73,169,178‐184 . Positive factors that may predict long‐term remission are efficient withdrawal from the beginning, and low headache frequency within the first year after withdrawal 174,185 …”