Table 1

Summary of effects of parental smoking on the respiratory health of children

  • 1-150 Results relate to maternal smoking during pregnancy or exposure to environmental tobacco smoke (ETS) in infancy. Data for ETS exposure during later childhood are too heterogeneous for meta-analysis.

  • 1-151 Based on fixed effects estimate.

  • 1-152 Relates largely, but not entirely to maternal smoking.

  • 1-154 Estimate and confidence limits differ from those in reference 2 due to exclusion of the study by Bulterys et al(see Erratum at end of this paper).

  • Numbers in square brackets are numbers of studies on which pooled odds ratios based.

  • Source of data: references 1–7.