Correlation coefficiencies of the antibody titers between different virus isolates used in the HI test. Mari Strengell Niina Ikonen Thedi Ziegler Ilkka Julkunen 10.1371/journal.pone.0025848.g003 https://plos.figshare.com/articles/figure/_Correlation_coefficiencies_of_the_antibody_titers_between_different_virus_isolates_used_in_the_HI_test_/396058 <p>The Pearson product moment correlation coefficients (r) were calculated for all pairs for 2009–10 viruses (panel A) and for 2010–11 viruses (panel B). All correlation coefficients were significant (p<0.01). C) The scatter plots and trend lines of antibody titers for each Finnish A(H1N1)2009 virus compared to the A/California/07/2009 vaccine virus.</p> 2011-10-11 01:40:58 coefficiencies antibody titers isolates