There were significant differences in median CFS ( 4/9 versus 6/9 versus 6/9 , p < 0.001 ) , Barthel Index ( 18/20 versus 11/20 versus 14/20 , p < 0.001 ) and mean AMTS scores ( 9.51 versus 7.57 versus 7.00 , p < 0.001 ) between those considered low , medium and high risk of institutionalisation respectively .