Table 1. Summary of Baseline Characteristics (The MOBILIZE Boston Study).

Demographic Characteristics and Risk Factors	Total sample n = 765a
	No.	%
Age, mean (SD), y	78.1	(5.4)
Women,	488	63.8
Race,
White	609	79.6
Nonwhite	156	20.4
Years of Education, mean (SD), y	14.8	(6.1)
Body mass index, kg/m2, b
<25	233	30.4
25–29.9	297	38.8
≥30	206	26.9
Fell in past year,	289	37.8
Comorbidities ≥2,	491	64.2
Hypertension,	607	79.3
Previous stroke,	72	9.4
Diabetes mellitus,	172	22.5
Hyperlipidemia,	469	61.3
Congestive heart failure,	38	5.0
Mini-Mental State Examination score <24, c	154	20.1
CES-D Revised score, mean (SD), points	11.0	(11.2)
Physical activity score, d
0–66	245	32.0
66.01–124	262	34.3
124.01–559	258	33.7
Impaired balance, score <4 out 7, e	318	41.6
Slow gait speed, <0.78 m/s, f	189	24.7
Slow chair stands, >16.37 s, g	95	12.4

^aForty four of the 809 older adults were missing data and therefore excluded from the analysis.

^bBody mass index is calculated as weight in kilograms divided by height in meters squared.

^cMini-Mental State Examination (MMSE) cut off point for cognitive impairment [11], [12].

^dPhysical activity tertiles measured using the Physical Activity Scale for the Elderly [15].

^eBalance score was based on 4 progressively difficult stands: feet side by side, semi-tandem, tandem, and 1-leg stand [17].

^fSlow gait speed (m/s) is the lowest 25% based on time of lowest of 2 usual-paced 4-meter walks [17].

^gHighest quartile (slowest performance) of time to complete 5 repeated chair stands [17].