Anxiety Refractory coughers were more anxious than non-cough participants, F (1,43)=6.455, p=0.015, partial ɳ 2 =0.131 (approaching significance at the adjusted α -level). 52% of refractory coughers displayed a clinical level of anxiety, the majority falling within the “moderate” category ( table 3 ).
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Box's M test assessed the multivariate homogeneity of covariance (this test is highly sensitive so significance values would need to be highly significant to suggest heterogeneity, which they were not).