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Table 1  Characteristics of study participants

From: Mobility-related brain regions linking carotid intima-media thickness to specific gait performances in old age

Characteristics

Study population

(N = 707)

Unimpaired gait

(N = 511)

Impaired gait

(N = 196)

p

Demographics

Age, years

59.8 (3.1)

59.6 (3.1)

60.2 (3.0)

0.021

Female

408 (57.7)

280 (54.8)

128 (65.3)

0.014

Height, cm

158.9 (7.8)

159.7 (7.7)

156.9 (7.8)

< 0.001

BMI, kg/m2

24.44 (3.16)

24.19 (2.92)

25.08 (3.64)

0.008

Cardiovascular risk factors

Current smoker

86 (12.2)

69 (13.5)

17 (8.7)

0.101

Alcohol consumption

199 (28.1)

156 (30.5)

43 (21.9)

0.028

Physical activity

   

0.655

Never

599 (84.7)

428 (83.8)

171 (87.2)

 

1–3 times/month

8 (1.1)

5 (1.0)

3 (1.5)

 

1–2 times/week

23 (3.3)

17 (3.3)

6 (3.1)

 

3–5 times/week

28 (4.0)

22 (4.3)

6 (3.1)

 

6–7 times/month

49 (6.9)

39 (7.6)

10 (5.1)

 

Hypertension

359 (53.8)

244 (51.0)

115 (60.8)

0.028

Diabetes mellitus

72 (10.7)

51 (10.5)

21 (11.2)

0.901

Hyperlipidemia

381 (56.3)

277 (56.6)

104 (55.3)

0.822

Neuroimaging

Total intracranial volume, cm3

1465.82 (159.62)

1471.23 (158.13)

1451.73 (163.03)

0.146

White matter volume, ml

503.71 (128.08)

503.56 (129.93)

504.09 (123.42)

0.961

Gray matter volume, ml

558.33 (60.59)

562.07 (58.57)

548.57 (64.71)

0.008

Carotid ultrasonography

Carotid IMT, mm

0.84 (0.24)

0.84 (0.25)

0.85 (0.20)

0.399

Carotid plaque

178 (25.2)

130 (25.4)

48 (24.5)

0.870

  1. Note Categorical variables are presented as numbers (percentages), and continuous variables as means (SDs).
  2. Abbreviation BMI, body mass index; IMT, Intima-media thickness; TUG, Timed-Up-and-Go; %GC, percentage of the gait cycle