Table 5. Cumulative meta-analysis for floor area, guestrooms and occupancy related with energy use in hotels.

Cumulative meta-analysis for floor area
Add number	Study	Mean effect	p-value	T	I2
1	Cham and Lam (2002)–raw data	0.9350	<0.0001	0.0000	0.0
3	Deng (2003)	0.8883	<0.0001	0.2242	42.0
10	Wang (2012)	0.8700	<0.0001	0.3137	82.4
18	Stimac et al. (2023)–raw data	0.8419	<0.0001	0.2823	76.5
19	Cham and Lam (2002)–EUI data	0.8202	<0.0001	0.3622	83.8
22	Alujević (2006)	0.7548	<0.0001	0.5230	91.3
25	Priyadarsini et al. (2009)	0.7086	<0.0001	0.5949	93.7
30	Stimac et al. (2023) EUI data	0.6465	<0.0001	0.6207	94.6
Cumulative meta-analysis for number of guestrooms
Add number	Study	Mean effect	p-value	T	I2
1	Santiago (2021)	0.7940	0.0609	0.0000	0.0
3	Xin et al. (2012)	0.5197	0.0709	0.4357	65.6
6	Oluseyi et al. (2016)	0.5761	<0.0001	0.1766	34.3
10	Deng (2003)	0.5180	<0.0001	0.3543	72.0
16	Alujević (2006)	0.4641	<0.0001	0.3475	75.9
21	Wang (2012)	0.5047	<0.0001	0.5531	93.5
Cumulative meta-analysis for occupancy levels
Add number	Study	Mean effect	p-value	T	I2
1	Perez et al. (2016)	-0.9497	0.0015	0.0000	0.0
2	Santiago (2021)	-0.6090	0.5282	1.4771	86.7
6	Cham and Lam (2002)	0.2424	0.5282	0.6828	77.2
10	Kong et al. (2012)	0.2647	0.0970	0.4034	65.8
15	Lai (2016)	0.2175	0.0987	0.4350	75.7
21	Wang (2012)	0.2029	0.0839	0.4882	90.4