Table 1.

Comparison of demographics, olfactory and subjective scores between PRP and control groups

	PRP group (n = 30)	Control group (n = 26)	p value
Age (mean ± SD), years	39 ± 12	44 ± 11	0.135
Sex (F/M)	16/14	20/6	0.66
Duration of olfactory disorder (mean ± SD; min–max), months	10.8 ± 2.5 7–16	9.7 ± 3.4 6–17	0.805
TDI at baseline (mean ± SD)	21.3 ± 7.4	24.5 ± 7.4	0.102
TDI at 1 month (mean ± SD)	28.0 ± 5.0	25.0 ± 7.7	0.226
Subjective improvement (mean ± SD)	1.8 ± 1.0	0.3 ± 0.6	< 0.001

SD standard deviation, TDI Threshold–Discrimination–Identification