Abstract：
:In this matched-pair study 139 pregnant women were matched on the basis of age to an equal number of non-pregnant women with no signs of genital infection. The mean age was 28.7 years (range 20-41). The cut-offs used for detection of chlamydial antibody were 1:64 and 1:128 for IgG and 1:16 for IgA. IgG antibody at 64 was detected in 37.4% of pregnant women, compared to 46% of controls (p = 0.145). There was, however, a statistically significant difference between the groups for IgG at 128 (gravidae = 15.8%; controls = 28%; p = 0.014). IgA were detected in 8.6% and 16.5% of subjects, respectively (p = 0.047). IgG levels did not vary with increasing age among the pregnant women, but rose significantly with age in non-pregnant controls (logistic regression p-values = 0.011 and 0.006, for IgG at 64 and 128, respectively). IgG-positive women in the control group tended to be older than pregnant IgG-positive women (p = 0.06). These differences could not be explained by marital status, parity or use of oral contraceptives. In view of the lack of epidemiological differences, biological explanations might be invoked.
journal_name
Eur J Epidemioljournal_title
European journal of epidemiologyauthors
Olliaro P,Regazzetti A,Marchetti AL,Lanzarini P,Spinillo A,Gorini Gdoi
10.1007/BF01717451subject
Has Abstractpub_date
1994-02-01 00:00:00pages
47-50issue
1eissn
0393-2990issn
1573-7284journal_volume
10pub_type
杂志文章abstract：:The minimal sufficient cause (MSC) model, also known as the sufficient component cause model, has been used to facilitate understanding of several key concepts in epidemiology. To improve the understanding of mediation, we introduce a causal model for mediation that is grounded in the MSC approach. First, we describe ...
journal_title：European journal of epidemiology
pub_type： 杂志文章
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journal_title：European journal of epidemiology
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journal_title：European journal of epidemiology
pub_type： 杂志文章
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journal_title：European journal of epidemiology
pub_type： 杂志文章,meta分析
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journal_title：European journal of epidemiology
pub_type： 杂志文章
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pub_type： 杂志文章
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journal_title：European journal of epidemiology
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doi：10.1007/BF00209523
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journal_title：European journal of epidemiology
pub_type： 杂志文章
doi：10.1007/s10654-018-0449-x
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journal_title：European journal of epidemiology
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journal_title：European journal of epidemiology
pub_type： 杂志文章
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更新日期：2007-01-01 00:00:00
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journal_title：European journal of epidemiology
pub_type： 杂志文章
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更新日期：1998-06-01 00:00:00
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journal_title：European journal of epidemiology
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journal_title：European journal of epidemiology
pub_type： 杂志文章
doi：10.1007/BF03334985
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journal_title：European journal of epidemiology
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journal_title：European journal of epidemiology
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journal_title：European journal of epidemiology
pub_type： 杂志文章
doi：10.1007/BF01719942
更新日期：1995-02-01 00:00:00
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journal_title：European journal of epidemiology
pub_type： 杂志文章
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journal_title：European journal of epidemiology
pub_type： 杂志文章
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journal_title：European journal of epidemiology
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journal_title：European journal of epidemiology
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journal_title：European journal of epidemiology
pub_type： 杂志文章,评审
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更新日期：2019-10-01 00:00:00
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journal_title：European journal of epidemiology
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journal_title：European journal of epidemiology
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journal_title：European journal of epidemiology
pub_type： 杂志文章
doi：10.1007/BF00145318
更新日期：1992-11-01 00:00:00
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pub_type： 杂志文章
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更新日期：2001-01-01 00:00:00
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