Mean weekly stool frequency was 3.9 + / - 1.9 times , consistency score was 2.6 + / - 0.6 ( range 1.0-4 .0 ) , output was 11.0 + / - 6.3 balls ( 40 mm diameter ) and severity score was 10.3 + / - 3.3 ( range 5.0-22 .0 ) .