The association between self-reported sleep dissatisfaction after the Great East Japan Earthquake, and a deteriorated socioeconomic status in the evacuation area: the Fukushima Health Management Survey

•Our study was conducted in a large scale population which evacuated after a disaster.•Self-reported sleep dissatisfaction after a disaster was associated with living in non-home conditions.•Self-reported sleep dissatisfaction after a disaster was associated with decreased income and unemployment.