Table 1.

Exploratory factor analysis results.

Factors	% of Variance	Factor Loadings	Cronbach’s Alpha
Factor 1: Air pollution control devices	53.257		0.878
1. This hotel actively uses special equipment (e.g., dust collectors) to remove fine dust and particulates and to eliminate volatile organic compounds.		0.823
2. This hotel actively uses special equipment (e.g., air environment plants) to remove odors and harmful gases.		0.875
3. This hotel constantly measures and manages air pollutant emissions at the hotel with automatic measuring devices.		0.885
4. This hotel has installed indoor air purifiers to purify the air and remove various bad odors.		0.788
Factor 2: Air quality monitoring systems	16.975		0.900
1. This hotel has a monitoring and management system to reduce greenhouse gas emissions.		0.842
2. This hotel has a monitoring and management system to save energy.		0.864
3. This hotel has a monitoring and management system to minimize the emission of hazardous air pollutants.		0.852
4. This hotel has a system for monitoring and managing the air quality of all spaces used by hotel guests (e.g., guest rooms, restaurants, gyms, etc.).		0.831

Total variance explained: 70.232. KMO measure of sampling adequacy: 0.876. Bartlett’s test of sphericity (p < 0.01).