Table 2. Bivariate correlations coefficients meta-analyses.

Contributor	k	N	r	95%-CI	p	Q	T	I2 (%)	FSN
Floor area	30	1503	0.6465	[0.4890; 0.7632]	<0.0001	536.55	0.6207	94.6	2303
Guestrooms	21	1101	0.5047	[0.2952; 0.6679]	<0.0001	305.44	0.5531	93.5	1161
Construction year	5	437	-0.0436	[-0.1862; 0.1007]	0.5546	7.34	0.1077	45.5	31
Star level	5	268	0.5822	[0.3129; 0.7649]	<0.0001	12.50	0.2985	68.0	285
Number of floors	4	124	0.3393	[0.0531; 0.5740]	0.0211	6.04	0.2100	50.4	77
Building age	4	103	0.1076	[-0.0971; 0.3036]	0.3029	1.34	0.0000	0.0	32
Guestrooms area	3	108	0.4880	[0.3242; 0.6233]	<0.0001	1.16	0.0000	0.0	145
Retrofit	3	59	0.3587	[0.0264; 0.6197]	0.0350	2.74	0.1638	26.9	54
Occupancy	21	969	0.2029	[-0.0276; 0.4129]	0.0839	208.19	0.4882	90.4	336
Guest-nights	8	457	0.7090	[0.5432; 0.8216]	<0.0001	47.89	0.3447	85.4	750
Number of guests	5	411	0.6530	[0.0290; 0.9108]	0.0418	197.46	0.8461	98.0	381
Food covers	4	275	0.6834	[0.3492; 0.8634]	0.0005	34.95	0.4280	91.4	361
Room revenue	4	275	0.8123	[0.5868; 0.9208]	<0.0001	20.42	0.4035	85.3	416
Number of employees	7	360	0.7821	[0.6183; 0.8808]	<0.0001	35.02	0.3730	82.9	680
Employees density	4	326	0.4514	[0.0669; 0.7192]	0.0230	30.98	0.4013	90.3	197
Outdoor temperature	3	225	0.9130	[0.6996; 0.9769]	<0.0001	12.45	0.5425	83.9	469
Carbon emissions	3	118	0.8544	[0.5925; 0.9529]	<0.0001	19.26	0.4935	89.6	376
Water Use	3	63	0.7786	[0.3849; 0.9326]	0.0013	5.97	0.4493	66.5	356

Note: Q values in bold are statistically significant at 0.01 alpha level.