Figure 7. Change in percentage of validated articles reporting different types of validation before (2003) and after (2017) the journals with guidelines implemented antibody reporting guidelines.

Sample size (identical for all types of validation unless stated otherwise): with guidelines 2003 n = 23, 2017 n = 27; without guidelines 2003 n = 16, 2017 n = 16; exceptions: reference validation literature with guidelines 2003 n = 22; reference validation supplier with guidelines 2017 n = 26. P-values (one-tailed) were determined with Fisher’s exact test and adjusted using the Holm-Bonferroni correction.