Variable label	Intervention group		Consent Visit M+/- SD [N]	Between-group p-value for difference at the Clinic	Surgery Day M+/- SD [N]	Between-group p-value for difference at the Ambulatory Surgical Center	Within-group p-value for difference over time	Effect size for within-group differences	Difference (Surgery Day – Consent Visit) M+/- SD [N]	Between-group p-value for comparison of differences
		Full Sample
Heart Rate	Control		90.83 +/- 11.61 [24]	.48	88.60 +/- 11.27 [25]	.39	.62	-.108	-1.52 +/- 15.00 [23]	.62
	Intervention		88.84 +/- 14.16 [32]		85.47 +/- 10.46 [32]		.33	-.163	-2.27 +/- 13.29 [30]
Respiratory Rate	Control		21.12 +/- 2.82 [26]	.88	20.52 +/- 2.49 [25]	.93	.31	-.170	-.56 +/- 4.37 [25]	.94
	Intervention		21.36 +/- 4.25 [33]		20.19 +/- 1.86 [32]		.28	-.153	-1.13 +/- 4.63 [31]
Systolic Blood Pressure	Control		103.09 +/- 10.69 [22]	.65	108.48 +/- 10.61 [25]	.29	.02*	.482	5.19 +/- 8.64 [21]	.18
	Intervention		104.00 +/- 7.60 [31]		105.84 +/- 9.61 [31]		.67	.08	1.71 +/- 13.50 [28]
Diastolic Blood Pressure	Control		62.59 +/- 6.07 [22]	.83	65.84 +/- 9.90 [25]	.85	.41	.159	2.14 +/- 12.47 [21]	.82
	Intervention		63.13 +/- 11.53 [31]		66.52 +/- 9.26 [31]		.19	.226	4.71 +/- 16.97 [28]
		5 to 7-year-olds
Heart Rate	Control		93.00 +/- 12.52 [11]	.84	90.73 +/- 11.45 [11]	.40	.72	-.129	-2.00 +/- 14.35 [10]	.56
	Intervention		92.23 +/- 12.02 [13]		87.00 +/- 10.04 [14]		.07	-.455	-5.85 +/- 12.47 [13]
Respiratory Rate	Control		20.42 +/- 2.07 [12]	.72	20.55 +/- 1.63 [11]	.30	.66	.094	.27 +/- 2.33 [11]	.43
	Intervention		20.31 +/- 4.09 [13]		21.14 +/- 1.79 [14]		.28	.242	1.08 +/- 4.68 [13]
Systolic Blood Pressure	Control		98.80 +/- 9.60 [10]	.49	104.45 +/- 12.32 [11]	.81	.14	.434	5.44 +/- 9.06 [9]	.92
	Intervention		100.67 +/- 7.85 [12]		106.21 +/- 10.86 [14]		.23	.362	6.50 +/- 14.71 [12]
Diastolic Blood Pressure	Control		60.60 +/- 5.50 [10]	.45	69.45 +/- 8.21 [11]	.35	.06	.652	8.33 +/- 10.27 [9]	.92
	Intervention		59.00 +/- 5.54 [12]		65.93 +/- 7.05 [14]		.005**	.679	8.42 +/- 7.48 [12]
		8 to 10-year-olds
Heart Rate	Control		89.00 +/- 10.95 [13]	.34	86.93 +/- 11.26 [14]	.53	.75	-.097	-1.15 +/- 16.05 [13]	.93
	Intervention		86.53 +/- 15.33 [19]		84.28 +/- 10.92 [18]		.79	.063	.47 +/- 13.61 [17]
Respiratory Rate	Control		21.71 +/- 3.29 [14]	.87	20.50 +/- 3.06 [14]	.47	.14	-.394	-1.21 +/- 5.48 [14]	.80
	Intervention		22.05 +/- 4.31 [20]		19.44 +/- 1.58 [18]		.006**	-.477	-2.72 +/- 4.00 [18]
Systolic Blood Pressure	Control		106.67 +/- 10.59 [12]	.76	111.64 +/- 8.17 [14]	.08	.07	.521	5.00 +/- 8.72 [12]	.09
	Intervention		106.11 +/- 6.81 [19]		105.53 +/- 8.78 [17]		.59	-.129	-1.88 +/- 11.72 [16]
Diastolic Blood Pressure	Control		64.25 +/- 6.24 [12]	.42	63.00 +/- 10.45 [14]	.59	.54	-.147	-2.50 +/- 12.30 [12]	.91
	Intervention		65.74 +/- 13.57 [19]		67.00 +/- 10.94 [17]		.77	-.071	1.94 +/- 21.41 [16]