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. 2008 Jun 4;8:197. doi: 10.1186/1471-2458-8-197

Table 3.

Adjusted odds ratios and 95% confidence intervals for the final logistic regression model.

Factors B AdjOR (95% CI) PPr. of LBW S. E.
Nationality
 Afghan refugee 0.970 2.64 (1.39, 5.01) ** 0.17 0.032
 Local (Ref.) - - 0.09 0.009
Consanguinity
 Consanguineous 0.871 2.39 (1.39, 4.12)** 0.12 0.012
 Non-consanguineous (Ref.) - - 0.06 0.012
Maternal age
 <20 years 2.122 8.35 (4.36, 15.98) ** 0.32 0.048
 >34 years 0.099 1.11(0.58, 2.11) 0.08 0.019
 20–34 years (Ref.) - - 0.08 0.009

Interactions
Area × anaemia
[Tribal area] [Anaemia (yes)] 1.198 3.31(1.70, 6.50)** 0.20 0.035
[Tribal area] [Anaemia (no)] -0.134 0.88(0.40, 1.90) 0.08 0.021
[Settled area] [Anaemia (yes)] -0.106 0.90(0.49, 1.65) 0.08 0.015
[Settled area] [Anaemia (no)] (Ref.) - - 0.09 0.013
Gestation × Abortion/miscarriage
[Preterm] [Abortion/miscarriage (yes)] 2.399 11.01(5.00, 24.23)** 0.25 0.052
[Preterm] [Abortion/miscarriage (no)] 2.350 10.49(5.73, 19.20)** 0.25 0.032
[Full term] [Abortion/miscarriage (yes)] 1.209 3.35(1.66, 6.77)** 0.11 0.023
[Full term] [Abortion/miscarriage (no)] (Ref.) - 0.04 0.008
Intercept -4.530**

**p < 0.01, *p < 0.05, Ref. (Reference Category), AdjOR (Adjusted Odds Ratios), C.I (Confidence Interval), PPr. (the predicted probability of LBW from the model, or prediction for the probability of LBW in future), and S.E. (Standard Error of the predicted probability).