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. 2022 Oct 3;17(10):e0275518. doi: 10.1371/journal.pone.0275518

Table 2. Subjective loss of smell and taste and psychophysical olfactory dysfunction and gustatory dysfunction assessment.

SARS-CoV-2 positive SARS-CoV-2 negative P-value
Total number 58 56  
Subjective loss of smell at inclusion n (%) 34 (58.6) 5 (8.9) <0.001
Subjective loss of taste at inclusion n (%) 27 (46.5) 5 (8.9) <0.001
Brief Smell Identification Test (BSIT)
Anosmia (BSIT 0–5 correct) n (%) 32 (55.2) 1 (1.8) <0.001
Hyposmia (BSIT 6–8 correct) n (%) 12 (20.7) 11 (19.6)
Normosmia (BSIT 9–12 correct) n (%) 14 (24.1) 44 (78.6)
Median BSIT score (25–75% IQR) 4.5 (1–8) 10 (9–11) <0.001
Median BSIT score, females (25–75% IQR) 4.5 (2–9.5) 10 (9–11) <0.001
Median BSIT score, males (25–75% IQR) 4.5 (1–8) 10 (9–11) <0.001
Median BSIT score for subjective anosmia/hyposmia (25–75% IQR) 4 (1–8) 8 (7–10) 0.038
Median BSIT score for subjective normosmia (25–75% IQR) 7 (3–10) 10 (9–11) 0.002
Burgharts taste strips
Correctly identify 4/4 taste strips n (%) 33/58 (56.9) 42/56 (75) <0.001
Median taste test (IQR) 4 (3–4) 4 (3.5–4) 0.03
Median taste test, females (IQR) 4 (3–4) 4 (4–4) 0.003
Mean teste test, males (IQR) 4 (2–4) 4 (3–4) 0.57

Subjective loss of smell and taste answered before inclusion and psychophysical olfactory and gustatory assessment. Median scores with Interquartile Ranges (IQR) for the Brief Smell Identification Test (BSIT) and Burgharts taste strips for SARS-CoV-2 positive and negative controls stratified for gender.