There is a long-recognised correlation between environmental/biologically available energy, of which productivity is a measure, and global-scale species richness in both plants and animals (Hawkins et al. 2003; Evans et al. 2005; Gillman and Wright 2006; Cusens et al. 2012).
Indeed, one retired Nigerian security official told the journal that the Nigerian military recognised a correlation between regional climatic events, and an upsurge in extremist violence: "It has become a pattern; we saw it happen in 2006; it happened again in 2008 and in 2010.
This is because policy-makers recognise that correlation between observations does not signify causation.
Various reports in the literature have recognised a positive correlation between tumour volume and prognosis for various head and neck subsites[ 16 18 ].
A significant correlation was recognised between the PCNA labelling percentage and AgNOR count (r = 0.452, P < 0.001).
Inverse correlation was recognised between miR-874 and HDAC1 expression after 5-Aza-dC treatment (Supplementary Figure 3).
Thus, it is also increasingly recognised in myositis that any correlation between the observed weakness of a muscle and the degree of its inflammatory cell infiltration at biopsy may be very poor [ 6, 7].
Although it is recognised that there is overall poor correlation between gene and protein expression [ 26], recent studies have indicated an increased correlation between mRNA and protein concentrations than was reported previously [ 23, 27].
For validation of the CIP2A antibody, we studied cytoplasmic immunoreactivity with an alternative antibody (NB100-74663; Novus Biologicals), and found a positive correlation between cytoplasmic CIP2A immunopositivity recognised by these two antibodies (rS=0.362, n=95, P<0.0001, Spearman's correlation test).
There was no significant correlation between the ability to recognise gender and diagnosis (r = 0.09, p = 0.54).
Theories as to the specific causal relationship between hyperuricaemia and cardiovascular disease/mortality vary; however, the correlation between the two is widely recognised.
