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Table 3 Regression models assessing the association between independent variables and antitetanus toxin levels* in pre-vaccination sera of Group A and Group B women – p values

From: Levels of diphtheria and tetanus specific IgG of Portuguese adult women, before and after vaccination with adult type Td. Duration of immunity following vaccination

Independent variable

Group Aa (n = 22)

Group Bb (n = 66)

 

Univariate analysis

Final model

Univariate analysis

Final model

Age in years

0.506

-

<0.001

-

Age at first tetanus toxoid

0.132

-

<0.001

<0.001

N.° doses of tetanus toxoid

0.002

0.022

0.376

-

Years since last tetanus toxoidc

0.001

0.016

0.007

0.041

Age at last tetanus toxoid

0.007

-

0.002

-

R2

-

0.56

-

0.32

  1. * Log transformation of values in mIU/ml
  2. a: Group A = women who began vaccination with DPT/DT
  3. b: Group B = women who began vaccination with TT
  4. c: This variable was log transformed to be used in the models
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BMC Public Health

ISSN: 1471-2458

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