Table 1.

Association between UPSIT total score and participant characteristics

Characteristic	N	UPSIT Score	Univariate P-value
		Mean ± SD
All	127	35 ± 3	NA
Clinical Diagnosis			0.55
USH2	80	35 ± 3
ARRP	47	34 ± 4
Age at Enrollment (yrs)			0.90†
<30	30	34 ± 4
30–39	34	34 ± 3
40–49	37	35 ± 3
50–59	11	34 ± 5
≥60	15	35 ± 3
Gender			0.34
Female	68	35 ± 4
Male	59	34 ± 3
Race/Ethnicity			0.63
Non-Hispanic White	113	34 ± 3
Other	14	35 ± 3
Duration of Disease (yrs) ‡			0.38†
<10	37	34 ± 4
10–19	46	34 ± 4
≥20	43	35 ± 3
Daily Smoker Ever			0.23
Yes	33	34 ± 3
No	94	35 ± 3
Country			0.02§
Canada	4	38 ± 1
France	13	34 ± 5
Germany	11	36 ± 2
Netherlands	10	32 ± 3
UK	10	33 ± 3
US	79	35 ± 3

^†Variable was analyzed as continuous.

^‡One participant was missing age of onset (a participant-reported field based on their awareness of visual symptoms) and duration of disease (computed based on age of onset and date of enrollment)

^§Four participants from Canada were excluded from analysis due to small sample size.