Participants	Usual Gait Speed (m/s)	Fast Gait Speed (m/s)	Wilcoxon Test
	N = 1,5061	N = 1,5062
Sex Assigned at Birth
Male	1.26 (1.09, 1.39)	1.71 (1.55, 1.88)	<0.001
Female	1.23 (1.07, 1.39)	1.69 (1.50, 1.84)	<0.001
Age
65-74	1.29 (1.14, 1.42)	1.74 (1.60, 1.91)	<0.001
75-84	1.19 (1.03, 1.33)	1.65 (1.46, 1.80)	<0.001
85+	1.06 (0.94, 1.17)	1.52 (1.29, 1.66)	<0.001
Clinical Frailty Scale (CFS)
1 - Very Fit	1.41 (1.28, 1.52)	1.89 (1.74, 2.04)	<0.001
2 - Well	1.27 (1.13, 1.39)	1.71 (1.60, 1.85)	<0.001
3 - Managing Well	1.10 (1.00, 1.24)	1.55 (1.33, 1.71)	<0.001
4 - Vulnerable	0.93 (0.80, 1.07)	1.17 (1.01, 1.49)	<0.001
5-9 - Frail	0.85 (0.62, 0.94)	0.73 (0.59, 1.05)	0.6
Falls in Past 12 Months
0 Falls	1.24 (1.08, 1.37)	1.71 (1.55, 1.85)	<0.001
1 Fall	1.23 (1.06, 1.39)	1.69 (1.48, 1.82)	<0.001
2 or More Falls	1.24 (1.05, 1.41)	1.67 (1.47, 1.85)	<0.001
Household Income
<C$20,000	1.14 (0.99, 1.30)	1.65 (1.42, 1.82)	<0.001
$C20,000-49,999	1.15 (1.00, 1.31)	1.60 (1.40, 1.78)	<0.001
$C50,000-99,999	1.26 (1.09, 1.40)	1.71 (1.55, 1.85)	<0.001
>$C100,000	1.30 (1.15, 1.42)	1.74 (1.63, 1.92)	<0.001
Unsure / Prefer Not to Answer	1.19 (1.05, 1.37)	1.68 (1.50, 1.81)	<0.001
Education Level
Secondary School Incomplete	1.14 (1.05, 1.28)	1.57 (1.43, 1.71)	<0.001
Secondary School Completed	1.21 (1.06, 1.33)	1.68 (1.50, 1.82)	<0.001
Some Post-Secondary Education	1.17 (1.00, 1.37)	1.66 (1.42, 1.84)	<0.001
Post-Secondary Diploma	1.25 (1.09, 1.40)	1.71 (1.55, 1.88)	<0.001
Ethnicity
White/Caucasian	1.25 (1.08, 1.40)	1.69 (1.52, 1.85)	<0.001
Asian	1.18 (1.01, 1.32)	1.69 (1.48, 1.84)	<0.001
Other / Unknown	1.23 (1.06, 1.38)	1.69 (1.43, 1.78)	<0.001
Multiracial / Multiple Ethnicities	1.21 (1.06, 1.32)	1.60 (1.47, 1.74)	<0.001
Black	1.17 (1.03, 1.21)	1.60 (1.27, 1.89)	<0.001
Employment Status
Retired	1.23 (1.07, 1.37)	1.69 (1.52, 1.84)	<0.001
Working Part-Time	1.25 (1.12, 1.39)	1.78 (1.62, 1.88)	<0.001
Working Full-Time	1.33 (1.12, 1.41)	1.85 (1.69, 1.96)	<0.001
Other / Prefer not to answer	1.19 (1.05, 1.36)	1.69 (1.43, 2.04)	<0.001
Body Mass Index (kg/m^2)
Underweight (<18.5)	1.33 (1.16, 1.45)	1.68 (1.53, 1.78)	<0.001
Healthy Weight (18.5-25)	1.27 (1.10, 1.42)	1.72 (1.58, 1.91)	<0.001
Overweight (25-30)	1.25 (1.09, 1.39)	1.69 (1.52, 1.85)	<0.001
Obesity (>30)	1.12 (1.00, 1.28)	1.62 (1.35, 1.78)	<0.001
Self Identified Polypharmacy	1.11 (0.99, 1.30)	1.58 (1.37, 1.74)	<0.001
PASE Score
<100	1.14 (1.00, 1.32)	1.62 (1.41, 1.78)	<0.001
100-150	1.21 (1.08, 1.35)	1.68 (1.52, 1.81)	<0.001
150+	1.30 (1.13, 1.42)	1.74 (1.60, 1.89)	<0.001
Sports-Related Injuries
History of Sports-Related Injury	1.30 (1.15, 1.45)	1.78 (1.60, 1.92)	<0.001
Chronic Health Conditions
Other	1.23 (1.06, 1.37)	1.69 (1.50, 1.84)	<0.001
Musculoskeletal	1.21 (1.05, 1.37)	1.66 (1.48, 1.82)	<0.001
Vision	1.20 (1.04, 1.35)	1.66 (1.46, 1.81)	<0.001
Cardiac/Cardiovascular	1.20 (1.04, 1.35)	1.66 (1.46, 1.81)	<0.001
Respiratory	1.19 (1.05, 1.37)	1.68 (1.46, 1.82)	<0.001
Gastrointestinal	1.09 (0.97, 1.30)	1.55 (1.31, 1.74)	<0.001
Neurological	1.10 (0.97, 1.28)	1.60 (1.32, 1.74)	<0.001
1 usual_gspeed: Median (Q1, Q3)
2 fast_gspeed: Median (Q1, Q3)