Table 2.

Measured acoustic characteristics for the environments of the off-campus (OG) and on-campus (IG) student cohorts

Acoustic characteristics (dBA)		Outside group (OG)	Inside group (IG)	t value	P value
L eq,24h	mean ± SD	64.7 ± 4.8	60.3 ± 1.8	2.721	0.007
	(min–max)	(55.2–72.4)	(58.3–64.1)
L d	mean ± SD	65.1 ± 5.2	61.4 ± 2.0	2.070	0.027
	(min–max)	(55.2–73.7)	(59.2–64.9)
L e	mean ± SD	64.6 ± 5.2	60.7 ± 3.8	1.908	0.036
	(min–max)	(53.7–70.4)	(55.0–67.3)
L n	mean ± SD	62.0 ± 6.1	54.8 ± 2.5	3.474	0.001
	(min–max)	(55.1–71.2)	(51.0–60.5)
L den	mean ± SD	69.8 ± 5.2	64.2 ± 1.8	3.245	0.002
	(min–max)	(61.9–77.4)	(62.2–67.5)