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Table 1 Characteristics of the study population

From: Variability and seasonality of active transportation in USA: evidence from the 2001 NHTS

Age group

5-10 years

11-17 years

18-64 years

65+ years

All

Percentage (%)

9.8 (n = 12723)

11.1 (n = 14442)

66.9 (n = 87053)

12.3 (n = 16004)

100

Sex

Male

51.8

51.3

49.2

42.6

48.9

 

Female

48.2

48.7

50.8

57.4

51.1

Race/ethnicity

White

70.9

73.9

77.1

86.2

77.3

 

Black

14.3

16.6

12.5

10.5

12.9

 

Asian

2.6

2.1

2.9

1.1

2.5

 

Hispanic

12.2

7.4

7.6

2.2

7.3

Household income level

< 20 k

15.7

13.0

12.6

30.6

15.2

 

20-40 k

23.6

21.8

23.8

36.3

25.1

 

40-80 k

36.9

39.0

38.0

24.4

36.4

 

> 80 k

23.9

26.2

25.5

8.6

23.4

Region

Northeast

18.1

18.9

18.7

20.7

18.9

 

Midwest

24.3

24.6

23.3

24.5

23.7

 

South

34.7

35.3

36.2

36.5

36.0

 

West

22.9

21.2

21.9

18.2

21.5

Urbanization level

Rural

21.8

24.0

20.5

21.6

21.1

 

Town

24.1

23.2

22.3

21.3

22.4

 

Suburban

23.0

24.3

24.3

22.7

24.0

 

Second city

17.4

15.8

17.7

21.0

17.9

 

Urban

13.8

12.7

15.2

13.3

14.6

Month

January

8.5

8.7

8.7

7.7

8.5

 

February

8.0

7.3

7.8

7.2

7.7

 

March

9.0

9.0

8.5

8.1

8.6

 

April

8.4

8.2

8.2

8.0

8.2

 

May

8.2

8.8

8.1

9.4

8.4

 

June

8.0

8.1

8.1

8.4

8.1

 

July

8.3

8.1

8.2

9.8

8.4

 

August

7.8

8.0

8.4

9.7

8.5

 

September

8.3

8.1

8.2

8.5

8.3

 

October

8.8

8.0

9.0

7.0

8.6

 

November

8.0

8.5

8.2

8.1

8.2

 

December

8.8

9.2

8.6

8.1

8.6