Fig. 2From: Social trust predicts sleep disorder at 6 years after the Great East Japan earthquake: data from a prospective cohort studyThe mean AIS score during follow up fter the Earthquake due to social trust groups at the first survey. †1; First survey - from June to August, 2011. 2; Second survey - from June to July, 2012. 3; Third survey - from May to July, 2013. 4; Fourth survey - June, 2014. 5; Fifth survey - June, 2015. 6; Sixth survey - June, 2016. 7; Seventh survey - from May to June, 2017Back to article page