Table 2:

Baseline characteristics of the Fox Insight cohort and virtual PD census

	Virtual census (n=849488)	Fox Insight (n=22465)	Association with Fox Insight participation (OR, 95% CI)*
Age
<65	118680 (14.0%)	8479 (37.7%)	1.6 (1.6, 1.7)
65–74	238021 (28.0%)	9735 (43.3%)	REF
>=75	492787 (58.0%)	4251 (18.9%)	0.15 (0.15, 0.16)
Gender
Male	471492 (55.5%)	12720 (56.6%)	REF
Female	377996 (45.5%)	9745 (43.4%)	1.7 (1,6, 1.7)
Race/ethnicity
White	737352 (86.8%)	21303 (94.8%)	REF
Black	45903 (5.4%)	148 (0.7%)	0.12 (0.10, 0.14)
Other	66233 (7.8%)	1014 (4.5%)	0.74 (0.69, 0.80)
Census division
Northeast	140168 (16.5%)	1518 (6.8%)	REF
Mid-Atlantic	78062 (9.2%)	2943 (13.1%)	4.0 (3.7, 4.2)
East North Central	86509 (10.2%)	3154 (14.0%)	3.9 (3.7, 4.2)
West North Central	75338 (8.9%)	1432 (6.4%)	1.8 (1.6, 1.9)
South Atlantic	199401 (23.5%)	4722 (21.0%)	2.3 (2.1, 2.4)
East South Central	46257 (5.4%)	993 (4.4%)	2.3 (2.1, 2.5)
West South Central	114716 (13.5%)	1993 (8.9%)	1.5 (1.4, 1.6)
Mountain	66977 (7.9%)	2183 (9.7%)	3.5 (3.3, 3.7)
Pacific	42060 (5.0%)	3527 (15.7%)	10.9 (10.2, 11.6)
Rural/urban residence
Non-metropolitan	160805 (18.9%)	2750 (12.2%)	REF
Metropolitan	688683 (81.1%)	19715 (87.8%)	2.3 (2.2, 2.4)
Education
Less than high school	200718 (23.6%)	155 (0.7%)	REF
High school/some college	399107 (47.0%)	6496 (28.9%)	20.5 (17.5, 24.1)
Bachelor/associate degree	134267 (15.8%)	8153 (36.3%)	111.3 (94.8, 130.6)
Master/professional/doctoral degree	115396 (13.6%)	7661 (34.1%)	130.4 (111.1, 153.2)
PD severity
Mild	231278 (27.2%)	11607 (51.7%)	REF
Moderate	355828 (41.9%)	9521 (42.4%)	0.42 (0.40, 0.43)
Severe	262382 (30.9%)	1337 (6.0%)	0.07 (0.07, 0.08)

^*Odds ratios are from a multivariable logistic regression model adjusted for all covariates in the table.