|  | <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 | Â | 42 | 73 | Â | 36 | 66 | Â | 19 | 64 | Â |
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 | Â | 20 | 76 | Â | 7 | 71 | Â | |
Otherb | 6 | 44 | Â | 3 | 54 | Â | 1 | 47 | Â | |
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 | Â | 14 | 60 | Â | 6 | 53 | Â | |
Annual household income | ≤$50,000 | 22 | 65 | 0.10 | 18 | 56 | 0.02 | 11 | 58 | 0.30 |
>$50,000 | 19 | 85 | Â | 17 | 80 | Â | 8 | 73 | Â | |
Unknown | 1 | 38 | Â | 1 | 15 | Â | Â | Â | Â | |
Marital status | Yes | 25 | 79 | 0.24 | 22 | 68 | 0.79 | 11 | 68 | 0.55 |
No | 17 | 65 | Â | 14 | 64 | Â | 8 | 59 | Â | |
Ethnicity | Asian | 4 | 79 | 0.69 | 6 | 70 | 0.52 | 3 | 51 | 0.21 |
Hispanic | 18 | 68 | Â | 16 | 62 | Â | 8 | 66 | Â | |
White | 15 | 82 | Â | 11 | 66 | Â | 5 | 61 | Â | |
 | Other | 5 | 64 |  | 3 | 82 |  | 3 | 80 |  |