FADS1 and delirium: Figure 2 shows that delta-5 desaturase activity estimated as AA/DGLA significantly increased in the delirium group than in the non-delirium group (7.4 ± 2.4 vs. 5.9 ± 2.0, p < 0.001). The EPA/AA ratio was not associated with the occurrence of delirium (0.34 ± 0.25 vs. 0.36 ± 0.26, p = 0.446). The p-values for DGLA and the AA/DGLA ratio were both below 0.001. After Bonferroni correction for multiple comparisons, these associations remained statistically significant (adjusted p < 0.006).