# Environmental Efficiency Indices in the Public Hospital Sector: A Proposal
## 3 Results and Discussion
### Study of Environmental Efficiency Indices of \"Hospital Activity\"
#### 3.2.2 Environmental Efficiency Index: \"Hospital Activity\" per Impact Categories
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Indices** & **Total** & **Natural Resources** & **Medical Gases** & \begin{tabular}{c} **Waste** \\ **Production** \\ \end{tabular} & \
\begin{tabular}{c} **Waste Disposal** \\ **Materials** \\ \end{tabular} &
\begin{tabular}{c} **Consumption of** \\ **Materials** \\ \end{tabular} \\ \hline
**EEI\({}_{\text{ADF}}\)** & \(9.11\times 10^{-5}\) & \(4.42\times 10^{-6}\) & \(1.71\times 10^{-6}\) & \(6.06\times 10^{-6}\) & \(6.73\times 10^{-6}\) & \(7.23\times 10^{-5}\) \\ \hline
**EEI\({}_{\text{ADF}}\)** & \(2.67\times 10^{3}\) & \(1.48\times 10^{1}\) & \(3.30\times 10^{1}\) & \(4.15\times 10^{1}\) & \(1.39\times 10^{1}\) & \(2.57\times 10^{3}\) \\ \hline
**EEI\({}_{\text{GWP100a}}\)** & \(1.02\times 10^{2}\) & \(1.35\times 10\) & \(3.11\times 10\) & \(1.43\times 10^{1}\) & \(1.51\times 10\) & \(8.17\times 10^{1}\) \\ \hline
**EEI\({}_{\text{GDP}}\)** & \(3.28\times 10^{-6}\) & \(1.30\times 10^{-7}\) & \(3.14\times 10^{-7}\) & \(6.70\times 10^{-7}\) & \(1.07\times 10^{-7}\) & \(2.06\times 10^{-6}\) \\ \hline
**EEI\({}_{\text{HTP}}\)** & \(9.20\times 10^{1}\) & \(7.08\times 10^{-1}\) & \(1.37\times 10\) & \(4.57\times 10\) & \(2.48\times 10\) & \(8.29\times 10^{1}\) \\ \hline
**EEI\({}_{\text{FWARE}}\)** & \(3.81\times 10^{1}\) & \(8.15\times 10^{-1}\) & \(1.86\times 10\) & \(2.51\times 10^{1}\) & \(1.33\times 10\) & \(8.96\times 10\) \\ \hline
**EEI\({}_{\text{TAETP}}\)** & \(1.00\times 10^{5}\) & \(2.08\times 10^{3}\) & \(5.48\times 10^{3}\) & \(5.92\times 10^{4}\) & \(2.14\times 10^{3}\) & \(3.13\times 10^{4}\) \\ \hline
**EEI\({}_{\text{TE}}\)** & \(2.43\times 10^{-1}\) & \(1.39\times 10^{-2}\) & \(8.77\times 10^{-3}\) & \(1.90\times 10^{-2}\) & \(3.18\times 10^{-2}\) & \(1.70\times 10^{-1}\) \\ \hline
**EEI\({}_{\text{POCP}}\)** & \(3.21\times 10^{-2}\) & \(4.06\times 10^{-4}\) & \(5.92\times 10^{-4}\) & \(5.66\times 10^{-3}\) & \(5.02\times 10^{-4}\) & \(2.49\times 10^{-2}\) \\ \hline
**EEI\({}_{\text{AP}}\)** & \(3.28\times 10^{-1}\) & \(6.93\times 10^{-3}\) & \(1.62\times 10^{-2}\) & \(2.26\times 10^{-2}\) & \(1.30\times 10^{-2}\) & \(2.69\times 10^{-1}\) \\ \hline
**EEI\({}_{\text{EP}}\)** & \(1.43\times 10^{-1}\) & \(3.26\times 10^{-3}\) & \(1.04\times 10^{-2}\) & \(3.09\times 10^{-2}\) & \(4.05\times 10^{-2}\) & \(5.83\times 10^{-2}\) \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Hospital activity environmental efficiency indices of the activities and services provided by the hospital in 2019 classified by impact category. Figure 5: Distribution of the environmental impact of each environmental aspect in the environmental efficiency indices of the hospital activity. is difficult to replace them with another type of power supply, as each equipment has its peculiarities. Plastic bags are also part of the materials that are most consumed within the hospital, with their main use being waste collection. Waste production significantly impacted the indices \(\text{EEI}_{\text{FWARE}}\) and \(\text{EEI}_{\text{MAETP}}\). In order to prevent and reduce illnesses, utilization of single-use materials is frequent in hospitals, which causes a significant amount of waste generation. These wastes are transferred to landfills or sterilisation or incineration plants, depending on the type of waste. Disposals produced in the hospital come from hygienic/sanitary use and have been shown to have a moderate effect on the environmental index of hospital activity. They only showed a significant result in the \(\text{EEI}_{\text{EP}}\) indices (21.54%) and the \(\text{EEI}_{\text{TE}}\) indices (13.07%). For the aspects related to the consumption of natural resources and medical gases, the results showed them to have a minimal contribution to hospital-activity environmental impact indices that, oddly enough, was much lower than to the rest of the environmental aspects analysed. Finally, the interpretation of the results obtained in this case made it possible to identify the critical points in the system, as well as to recommend options to reduce environmental loads.