IgE value correlations for paired LTPs. All 1,003 subjects have been plotted in each graph.

<p>Flags J, K, L, M, N, O, P, Q, R in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0027856#pone-0027856-g009" target="_blank">figure 9</a> indicate them as parts of the results shown also in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0027856#pone-0027856-g008" target="_blank">figures 8</a>, and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0027856#pone-0027856-g010" target="_blank">10</a>. Consecutive letters have been used on purpose through the three figures. The * marks IgE detection performed on ISAC 103, remaining IgE determinations have been obtained by ISAC Exp96. For graphical visualization needs on log scales, zero values for ISAC testing have been set to 0.01 kU/l. The Spearman r correlation coefficient has been calculated and the χ² test has been used for statistical purposes. Statistics are reported below each graph.