. Author manuscript; available in PMC: 2021 Jan 1.

Published in final edited form as: Int Forum Allergy Rhinol. 2020 Jan;10(1):7–14. doi: 10.1002/alr.22445

Table 2:

Unadjusted comparisons of Sniffin’ Stick TDI scores between all case subjects with CRS (n=224) and control subjects without CRS (n=164).

	Case Subjects with CRS Mean [±SD]	Control Subjects Mean [±SD]	Difference Mean [±SE]	Difference 95% CI	Test statistic	p-value
TDI Total Score	22.4 [± 9.5]	28.8 [±7.0]	−6.4 [±0.9]	(−8.0, −4.7)	t= 7.61	<0.001
Threshold score	3.8 [± 3.1]	6.1 [±2.7]	−2.3 [±0.3]	(−2.9, −1.7)	t= 7.82	<0.001
Discrimination score	9.2 [± 3.5]	10.9 [±2.7]	−1.7 [±0.3]	(−2.3, −1.1)	t= 5.37	<0.001
Identification score	9.4 [±4.2]	11.8 [±2.8]	−2.4 [±0.4]	(−3.1, −1.7)	t= 6.71	<0.001
TDI total score classification:			N (%)
Normosmia	60 (27%)	81 (49%)	----	----	χ²= 20.91	<0.001
Hyposmia / microsmia	90 (40%)	73 (45%)	----	----	χ²= 0.73	0.393
Functional anosmia	74 (33%)	10 (6%)	----	----	χ²= 40.51	<0.001

CRS, chronic rhinosinusitis; SE, standard error of the mean; CI, confidence interval of the mean difference, SD, standard deviation; t, independent samples t-test statistic; χ2, chi-square test statistic; reported p-values correspond to two-sided significance. T, olfactory threshold; D, olfactory discrimination; I, olfactory identification.