RESULTS	Moreover , only 8 patients of 40 in the warm humidified CO ( 2 ) group had a core temperature < 36.5 C ( 20 % , 95 % CI , 7 to 33 % ) , whereas in the control group this was the case in 24 of 39 ( 62 % , 95 % CI , 46 % to 78 % , P = 0.001 ) patients ( difference of the percentages between the groups 42 % , 95 % CI , 22 % to 61 % , P < 0.001 ) .\