Subjective OD & GD Number (%)
Self-reported GD N=2,579
All patients 1,205 (46.8)
Subgroups
Mild 1,164 (53.7)
Moderate 22 (15.3)
Severe-to-critical 19 (7.1)
Self-reported Aroma Sense Dysfunction N=2,105
All patients 1,776 (84.4)
Total loss of aroma perception sense 330 (15.7)
Partial loss of aroma 1,116 (53.0)
Distortion 330 (15.7)
No problem 329 (15.6)
Subgroups
Mild 1,753 (80.7)
Moderate 18 (35.3)
Severe-to-critical 5 (17.2)*
Self-reported OD N=2,579
All patients 1,901 (73.7)
Partial Loss of Smell 1,545 (59.9)
Total Loss of Smell 356 (13.8)
Cacosmia 1,427 (63.6)
Phantosmia 316 (14.1)
Subgroups
Mild 1,847 (85.3)
Moderate 31 (21.5)
Severe-to-critical 20 (7.4)
Onset of Smell Dysfunction N=1,955
Before the other symptoms 285 (14.6)
Concomittant with other symptoms 497 (25.4)
After the other symptoms 1,075 (55.0)
Did not remember/Missing data 98 (5.0)
Mean duration (Mean, SD, days) 11.5±5.7
Psychophysical Olfactory Tests N=231
Normosmic 113 (48.9)
Hyposmic 43 (18.6)
Anosmic 75 (32.5)