Effect of FLG R501X and 2282del4 on bilateral middle ear effusion.

Type A indicates normal middle ear function. Type B indicates middle ear effusion. Type C1 indicates slight negative middle ear pressure. Type C2 indicates negative middle ear pressure. Other indicates grommet, perforation, or type C2 tympanogram in at least one ear. Expected correspond to the expected contingency values were the null hypothesis is that the probabilities for each phenotype are independent of the mutation.