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Characteristics of the participating mother/child pairsa |
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| Study groups |
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| Variable |
Infections (N = 190) |
White blood cells (N = 86) |
Lymphocyte subsets (N = 52) |
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|
|
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| Mother's age (yr) |
28 (21–41) |
29 (21–36) |
29 (22–35) |
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| Infant's age (d) |
92 (75–123) |
93 (76–112) |
93 (76–112) |
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|
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| Percent |
Percent |
Percent |
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|
|
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| School yrs |
≤ 13:50 |
14–16:24 |
>16:26 |
≤ 13:50 |
14–16:27 |
>16:23 |
≤ 13:43 |
14–16:30 |
>16:27 |
| Smokingb |
No:82 |
Yes:18 |
No:86 |
Yes:14 |
No:89 |
Yes:11 |
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| Alcoholb |
No:82 |
Yes:18 |
No:83 |
Yes:17 |
No:77 |
Yes:23 |
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| Nursingc |
Whole:81 |
Partial:19 |
Whole:84 |
Partial:16 |
Whole:91 |
Partial:9 |
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| Infant's sex |
Girl:44 |
Boy:56 |
Girl:58 |
Boy:42 |
Girl:57 |
Boy:43 |
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| Vaccination |
No:69 |
Yes:31 |
No:76 |
Yes:24 |
No:85 |
Yes:15 |
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| Resp. infection |
No:72 |
Yes:28 |
No:71 |
Yes:29 |
No:78 |
Yes:22 |
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|
aMother's and infant's age: median (range). WBCs were analyzed in a subgroup of 86 infants, and within this subgroup lymphocyte subsets were analyzed among 52 infants with enough blood left after WBC count analysis. bDuring pregnancy. cPartial nursing also includes no nursing. | |||||||||
Glynn et al. Environmental Health 2008 7:62 doi:10.1186/1476-069X-7-62 |
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