## 3 Methods and Materials
### Evaluation Indicator System and Variable Selection  
Research on efficiency evaluation in both the domestic and the international literature indicates that when using the DEA method, the total number of indicators should not exceed half of the total number of decision-making units [50]. Considering the characteristics of the context of psychological crisis intervention resource integration during major emergencies, as well as the availability and representativeness of the data, and based on the literature review and expert consultations [51], financial inputs, human resources, and facility resources were selected as input indicators. Service coverage and intervention effects were chosen as output indicators. A DEA model evaluation system for the efficiency of psychological crisis intervention resource integration during major emergencies was constructed, as shown in Table 1. This model aims to assess and optimize the integration efficiency of psychological crisis intervention resources in the disaster prevention and mitigation process, ensuring efficient and comprehensive psychological support and services in the face of disasters and risks.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Indicator Type** & **Name of Index** & **Indicator Connotation** & **Unit** \\ \hline \multirow{4}{*}{Investment indicators [52; 53; 54]} & Financial & Total funds allocated for psychological crisis intervention. & CNY ten thousand \\  & input & Number of professionals providing psychological crisis intervention services. & People \\  & & Costs associated with facilities used to provide psychological crisis services. & CNY ten thousand \\ \hline \multirow{4}{*}{Output indicators [55; 56]} & Service coverage rate & Proportion of the target population covered by psychological crisis intervention services. & \% \\  & & Degree of improvement in the mental health status of the serviced population after psychological crisis intervention, facilitated by community collaboration. & \% \\ \hline \hline \end{tabular}
\end{table}
Table 1: Indicator system of the DEA model of the efficiency of integrating resources for psychological crisis intervention under major emergencies.  
Given the internal and external factors of psychological crisis intervention resource integration during major emergencies and their complex interactions, this paper utilizes fsQCA 4.1 software to analyze the influencing factors, interaction relationships, and configuration effects on the efficiency of psychological crisis intervention resource allocation. Based on the driving mechanism for psychological crisis intervention resource integration efficiency during major emergencies and the review of the relevant literature, it is evident that in the fsQCA configurational analysis, the conditional variables are established from five dimensions: human resources [57], infrastructure facilities [58], service level [59], economic development level [60], and government support strength [61]. These dimensions have a significant impact on the efficiency of psychological crisis intervention resource integration and can effectively evaluate the efficiency of resource integration and its influencing factors. The outcome variable is the efficiency of psychological crisis intervention resource integration during major emergencies, calculated using the DEA method, as shown in Table 2.