Figure 2: Time (min) evolution in the preparation of medication for patients hospitalized in the chest disease Ward. MP: phase 1 (manual prescription), corresponding to study period prior to electronic prescription implementation EP1: phase 2 (electronic prescription), corresponding to study period one month after electronic prescription implementation PE2: phase 3 (electronic prescription), corresponding to study period two months after electronic prescription implementation EP1 vsMP p<0,001 EP2 vs MP p=0,001.