Using the half normal distribution to quantify covariate balance in cluster-randomized pragmatic trials

Table 1 Properties of I and B based on simulations of uncorrelated multivariate normal distributed variables using the 1:1 allocation ratio for 60 sites

# of site-level variables	Mean	I			Mean	B
# of site-level variables	Mean	SD	10th percentile	25th percentile	Mean	SD	10th percentile	25th percentile
2	0.815	0.435	0.291	0.486	2.100	2.109	0.210	0.598
3	0.809	0.357	0.372	0.545	3.114	2.580	0.573	1.216
4	0.807	0.307	0.434	0.584	4.125	2.961	1.082	1.955

ISSN: 1745-6215