The pig model , compared with the manikin model , presented a higher value regarding the reality of skin turgor ( 1.7 0.5 vs 0.4 0.8 ; respectively , P < 0.0001 ) ; landmark recognition ( 3.8 0.5 vs 2.0 0.5 ; respectively ; P < 0.0001 ) and reality of the model ( 3.0 0.8 vs 1.3 1.0 ; respectively ; P < 0.0001 ) .