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Table 5 ANOVA analysis of total daily in-vehicle travel time based on GPS data a by subject characteristics

From: Travel patterns during pregnancy: comparison between Global Positioning System (GPS) tracking and questionnaire data

  

<20 weeks

20-30 weeks

>30 weeks

Variable

Values

N

Travel time (min/day)

p-value

N

Travel time (min/day)

p-value

N

Travel time (min/day)

p-value

All subjects

 

42

73

 

36

66

 

19

64

 

Age

<30

21

63

0.09

16

58

0.14

10

61

0.64

≥30

21

84

 

20

73

 

9

68

 

Education level

High school

18

69

0.00

13

54

0.06

11

62

0.58

University and above

18

87

 

20

76

 

7

71

 

Otherb

6

44

 

3

54

 

1

47

 

Number of other children

0

20

87

0.03

21

72

0.28

12

72

0.21

≥1

22

61

 

15

59

 

7

52

 

Number of persons

≤2

22

83

0.08

22

71

0.36

13

70

0.34

>2

20

63

 

14

60

 

6

53

 

Annual household income

≤$50,000

22

65

0.10

18

56

0.02

11

58

0.30

>$50,000

19

85

 

17

80

 

8

73

 

Unknown

1

38

 

1

15

    

Marital status

Yes

25

79

0.24

22

68

0.79

11

68

0.55

No

17

65

 

14

64

 

8

59

 

Ethnicity

Asian

4

79

0.69

6

70

0.52

3

51

0.21

Hispanic

18

68

 

16

62

 

8

66

 

White

15

82

 

11

66

 

5

61

 
 

Other

5

64

 

3

82

 

3

80

 
  1. aAveraged for each person-week with at least two valid GPS days (valid GPS day: ≥50% of GPS data between 7:00 AM and 10:59 PM).
  2. bTechnical school, or trade school, or lower than high school.