Relationship between gabapentin dose and anxiety. Anxiety was assessed on a 0–10 scale; GAD-7 scores are added where available. Day 0 is the day of discharge from the last hospitalization. Gabapentin is expressed in total daily doses. Measurements were not continuous, but for clarity lines connect the values obtained during in-office follow-up appointments or telephone conversations (a total of 27 measurements in 294 days).