Table 4 |
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|
Maternal demographic characteristics recorded on birth certificates of northern California samplesa |
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|
Northern California Family Cohort |
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|
|
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|
Source population |
Contacted |
Tier I |
Tier II |
Tier III |
|
|
|
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|
Number of households |
11,850 |
1,955 |
499 |
186 |
30 |
|
|
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|
Age |
*b |
*b |
|||
|
|
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|
Mean |
28.7 |
30.8 |
31.6 |
31.7 |
30.3 |
|
|
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|
Age group |
*b |
*b |
|||
|
|
|||||
|
Under 25 years |
27.8% |
17.2% |
13.4% |
11.3% |
16.7% |
|
25-34 years |
52.4% |
53.9% |
53.3% |
58.1% |
56.7% |
|
35-44 years |
19.5% |
28.3% |
33.1% |
30.1% |
26.7% |
|
45+ |
0.3% |
0.6% |
0.2% |
0.5% |
0.0% |
|
|
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|
Education level |
*b |
*b |
**c |
||
|
|
|||||
|
0-8 years |
8.3% |
7.2% |
4.6% |
0.5% |
0.0% |
|
9-11 years |
12.8% |
10.4% |
6.4% |
1.6% |
6.7% |
|
12 years |
25.9% |
16.3% |
12.6% |
12.4% |
10.0% |
|
13-15 years |
19.9% |
20.2% |
21.0% |
22.0% |
10.0% |
|
16 years |
17.7% |
23.7% |
24.6% |
26.3% |
33.3% |
|
>16 years |
15.4% |
22.3% |
30.7% |
37.1% |
40.0% |
|
|
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|
Race/ethnicityd |
*b |
*b |
|||
|
|
|||||
|
White |
71.0% |
71.3% |
80.0% |
79.6% |
93.3% |
|
Asian |
20.2% |
23.6% |
15.6% |
16.2% |
6.7% |
|
African American |
6.5% |
3.5% |
3.6% |
3.2% |
0.0% |
|
Native American |
0.7% |
0.3% |
0.2% |
0.5% |
0.0% |
|
Other/Missing |
1.6% |
1.3% |
0.6% |
0.5% |
0.0% |
|
|
|||||
|
Hispanic identification |
*b |
*b |
**c |
||
|
|
|||||
|
Latino |
33.2% |
24.1% |
21.6% |
11.9% |
23.1% |
|
Non-Latino |
66.5% |
75.6% |
78.2% |
87.6% |
76.9% |
|
Missing |
0.3% |
0.3% |
0.2% |
0.5% |
0.0% |
|
|
|||||
|
Place of birth |
*b |
*b |
**c |
||
|
|
|||||
|
USA |
55.3% |
56.8% |
68.5% |
76.3% |
80.0% |
|
Mexico |
18.4% |
13.9% |
10.6% |
2.7% |
6.7% |
|
Other |
26.2% |
29.2% |
20.6% |
21.0% |
13.3% |
|
Missing |
0.1% |
0.1% |
0.2% |
0.0% |
0.0% |
|
|
|||||
|
Publicly funded delivery |
*b |
*b |
|||
|
|
|||||
|
Yes |
33.6% |
21.5% |
17.0% |
8.6% |
13.3% |
|
No |
66.2% |
78.4% |
82.6% |
91.4% |
86.7% |
|
Missing |
0.2% |
0.2% |
0.4% |
0.0% |
0.0% |
|
|
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|
aAll households participated in Tier I: some also participated in either Tier II or Tier III. Data shown are column percents. bP value of comparison source population. cP Value of comparison to Tier 1 cohort. dAsian ethnicity includes Indian and Filipino. Native American includes Hawaiian, Aleut, Eskimo. * Indicates significance at the <0.0001 level. ** Indicates significance at the 0.0001 level. |
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|
Hertz-Picciotto et al. Environmental Health 2010 9:54 doi:10.1186/1476-069X-9-54 |
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