  We use a measure of clustering derived from the nearest neighbour
distribution and the void probability function to distinguish between regular
and clustered structures. This measure offers a succinct way to incorporate
additional information beyond the two-point correlation function. Application
to a supercluster catalogue by Einasto et al. (1997) reveals no clustering in
the distribution of superclusters. However, we show that this supercluster
catalogue is severely affected by construction effects. Taking these biases
into account we still find some indications for regularity on the largest
scales, but the significance is only at the one-sigma level.
